JournalTOCs

Potato Research
Journal Prestige (SJR): 0.436

Citation Impact (citeScore): 1
Number of Followers: 2

Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1871-4528 - ISSN (Online) 0014-3065
Published by Springer-Verlag

[2468 journals]

Correction to: Foliar-Applied Melatonin Mitigates Carryover Injury Caused
by Premix Herbicide Lumax®537.5SE in Potato
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  PubDate: 2023-12-01
Identification and Analysis of Characteristic Flavour Compounds in Baked
Potato of Different Cultivars Based on HS-GC-IMS
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  Abstract: Abstract In this study, the volatile flavour compounds of baked potatoes from different cultivars were identified and analysed via headspace–gas chromatography–ion mobility spectrometry (HS-GC-IMS) together with principal component analysis (PCA). Totally, 89 signal peaks were detected, and 64 compounds were identified and classified into 25 aldehydes, 14 alcohols, 11 ketones, 5 esters, 2 furans, 1 pyrazine and others. Based on the signal intensity of the identified compounds, topographic plots and fingerprints were established to investigate the differences caused by cultivars. The main compounds including aldehydes, alcohols, ketones, esters, furan and pyrazine varied with cultivars; they were more abundant in B5 and B6 cultivars. Moreover, PCA and fingerprint similarity analysis clearly showed that these samples are independent and distinguishable. Results also showed that the GC-IMS technique might be helpful and useful in the rapid detection of volatile compounds in cooked potatoes and provide support for the domestic and industrial products. The obtained information could serve for breeding projects of new varieties with specific flavour profiles which comply with consumer demand.
  PubDate: 2023-12-01
Ancient Potato Varieties of the Canary Islands: Their History, Diversity
and Origin of the Potato in Europe
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  Abstract: Abstract The journey of the potato (Solanum tuberosum L.) from South America to the rest of the world has generated a prolific literature regarding the discovery of this crop, its early consumption and cultivation in the Old World. An important part of that literature concerns the Canary Islands. The islands were the only exception to the Spanish trade monopoly with the New World, which reserved Seville as the only port for imports and exports to the colonies. The first potatoes to arrive from America, both from the Andes and the Chiloé archipelago, passed through the Canary Islands, and it is likely that the islands were initially the place where this crop became acclimatised. The orography, the volcanic soils, the climate and the intermediate photoperiods of the islands contributed to the acclimatisation of potatoes that came from various origins of America. The current biodiversity of potatoes in the Canary Islands includes different cultivars, such as local ones that arrived from South America after the conquest, which have evolved on the islands and are taxonomically classified as Solanum ssp. tuberosum, Solanum ssp. andigena and Solanum chaucha. These potatoes have been preserved by farmers, generation after generation, with between 600 and 800 ha being devoted to their cultivation (mainly on the island of Tenerife), in a traditional way, though with low productivity, often due to high virus pressure. This article traces the history of ancient potatoes in the Canary Islands and investigates in depth the introduction of potatoes in Europe through the Canary Islands. It contributes to describing the cultivated plant genetic resources of the Solanum spp. as well as their current situation and cultivation. It also describes traditional cultivation practices, the importance of the in situ conservation of theses varieties and the threats that affect them such as the Guatemalan potato moth.
  PubDate: 2023-12-01
Finite Element Method for Simulation of Frozen Potato Tempering in
Microwave and Microwave Infrared Oven
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  Abstract: Abstract Heat transfer equations solved by the finite element method can be used to understand how foods’ temperature changes during tempering. In this paper, the transient temperature change of frozen potato puree tempered in microwave and microwave infrared combination oven was simulated by the finite element method, separately. Maxwell equations were used to calculate the microwave power. Thermal and dielectric properties varied with temperature. Experimental temperature data obtained from the data of the same oven in a previous study for different positions of potato puree were used to validate the simulations developed for different microwave (30, 40, and 50%) and microwave (30, 40, and 50%)-infrared power (10%) combinations. The alteration of temperature according to position in the frozen mashed potato sample was simulated. Port input power for microwave heating by time was obtained. Average root mean square error (RMSE) between literature experimental temperature data and the simulation model was in good agreement with 0.76 °C for microwave and 0.90 °C for microwave and infrared combinations. Microwave and infrared powers’ effects on the rate of heat transfer of potato puree were also studied.
  PubDate: 2023-12-01
Tuber Yield and Incidence of Virus-Vectors in Late-Planted Seed Potato
Crops in North-Western Plains of India
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  Abstract: Abstract Seed potato crop in the north-western parts of India is largely grown after paddy in strict compliance to various components of the Seed Plot Technique, with planting during the first fortnight of October and haulm-cutting in the last week of December for minimum exposure to virus-transmitting aphid vectors. Owing to the government restrictions on the date of seeding and transplanting of paddy to maintain the level of the underground water table, the harvesting of paddy often gets delayed in the region. However, quality seed potatoes can be produced only if the planting and haulm cutting dates are adjusted as per the activity of virus-transmitting insect vectors. Therefore, we conducted field experiments for 2 years to study the effect of planting dates on plant growth parameters and tuber yield of two popular cultivars Kufri Pukhraj and Kufri Jyoti. Vector populations were also examined in all the planting dates until dehaulming. Results showed that the yield of seed-size tubers was at par for the first three dates of planting (15 Oct., 25 Oct., and 05 Nov.). The number and yield of over-sized tubers decreased sharply, and that of under-sized tubers increased with progressive delay in planting. The activity of virus-transmitting aphids and whiteflies remained low from mid-November to mid-January, with an appreciable effect of the daily temperature. Hence, planting up to the last week of October and dehaulming before the second week of January do not affect the yield of seed-size tubers significantly. On the other hand, to ensure the quality of the product, continuous monitoring of vector activity is necessary.
  PubDate: 2023-12-01
Physiological and Transcriptomic Analysis Reveals Drought-Stress Responses
of Arabidopsis DREB1A in Transgenic Potato
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  Abstract: Abstract Drought severely affects potato yield and quality. The overexpression of dehydration-responsive element binding proteins/C-repeat-binding factor (DREB1A/CBF3) was previously reported to significantly increase the drought tolerance in transgenic potato (Solanum tuberosum L.), but its molecular mechanism is poorly understood. In the present study, potato cultivar Longshu No. 3 (NT) and its derived transgenic plants (T) with the Arabidopsis DREB1A gene driven by stress-inducible promoter rd29A were used as materials to study drought-stress responses of AtDREB1A in transgenic potato. The results showed, under drought stress, that the AtDREB1A gene was overexpressed in T and T presented a healthier phenotype, higher biomass, higher content of proline and lower content of malondialdehyde than the control NT, indicating that AtDREB1A overexpression improved potato drought tolerance. As the main organ of absorbing and transporting water and nutrients in soil, roots are the first to feel the stress of drought stress. Transcriptome analysis of roots showed that compared with control NT, a total of 533 annotated genes with at least two-fold changes were found to be differentially expressed in transgenic potato roots, comprising 262 up-regulated and 271 down-regulated genes. Among them, the expression of a large number of genes related to abscisic acid metabolism, receptor-like protein kinases, cytochrome P450, the glycosyl hydrolase family, peroxidase, F-box proteins and the heat shock protein family changed greatly, indicating that these genes were responsive to AtDREB1A expression and play important roles in improving drought tolerance of AtDREB1A transgenic potato. This study lays a foundation for further understanding the regulatory network of AtDREB1A gene in improving drought tolerance in potato.
  PubDate: 2023-12-01
Taxonomic and Ecogeographic Predictors of Resistance Against Phthorimaea
operculella Zeller in Wild Potato Tubers
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  Abstract: Abstract Taxonomic and ecogeographic information are potentially useful to select plants with beneficial traits for crop breeding. We tested the predictability of taxonomic and geoclimatic information in identifying wild potatoes with resistance in tubers to the potato tuber moth, Phthorimaea operculella Zeller. We tested the tubers of 47 wild potato species and the native potato Solanum tuberosum andigena for resistance to tuber moth larvae. Materials included 6585 genotypes representing 558 accessions. During screening, 28% of accessions had ≥ 60% undamaged tubers (moderate resistance) and of these, 10% were highly resistant to moth damage (i.e., ≥ 80% of tubers undamaged). Tubers of six potato species (S. commersonii, S. chiquidenum, S. albicans, S. acaule, S. demissum and S. boliviense) were significantly more resistant than tubers of S. tuberosum andigena, but resistant accessions also occurred among 22 other Solanum species. The frequency of resistant accessions was similar across phylogenetic clades, but resistance was more frequent in accessions with an endosperm balance number (EBN) of 1 or 4 and a ploidy level of 4 × or 6 × . There was no apparent relation between altitude of origin and tuber resistance. Ecogeographical information was weakly related to resistance in some potato species; minimum temperatures during the coldest months at collection sites were positively related to resistance in S. boliviense and S. medians. Mean high temperatures and summertime precipitation were positively related to resistance in S. microdontum and S. acaule, respectively; however, ecogeographic information was not generally useful in predicting tuber resistance for other species or across all species. We recommend improvements to the phenotyping of potato accessions for resistance to tuber moth, including the use of taxonomic predictors.
  PubDate: 2023-12-01
Determinants Influencing Selection of Potato Varietal Technology and the
Role of Gender in Farm Decisions in Bhutan
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  Abstract: Abstract Potato is a primary food and cash crop in Bhutan. The adoption of new varieties has faced some challenges. To address this situation, farmers’ needs and priorities were investigated through varietal demonstration and a field survey in seven of the main potato-growing districts of Bhutan. The role of gender in farm decisions and operations in relation to potato farming was also assessed. Nine quality determinants significantly (χ2 = 376.54, P < 0.001) influenced farmers’ selection of potato varieties. These determinants, in order of their relative preference, were as follows: high productivity (15.5% by weight of mean rank), high market value (13.4%), red-skinned (12.7%), marketability (11.6%), large tubers (11.3%), late-blight resistant (11.3%), micronutrient content (8.8%), short-duration (8.3%) and good taste (7.2%). Potato productivity (yield) and preference vote data were significantly correlated (R = 0.395, P < 0.01) for female farmers but not for male farmers. Similarly, the involvement of female farmers in farm decision-making processes was significantly (P < 0.001) higher than when compared with their male counterparts. However, both genders were equally involved in physical farm operations. Bhutanese potato cropping is highly driven by commercially driven (market) preferences such as yield, colour and size as opposed to subsistence preferences such as micronutrient content. Understanding farmers’ priorities during the development of new potato variety is critical for varietal selection for adoption. Furthermore, understanding the role of women in farm decision-making processes is crucial for adoption of new varietal technology in potato production. These findings may serve as an evidence-based insight to guide research and policy interventions in Bhutan and in similar agroecologies.
  PubDate: 2023-12-01
LIDAR-Based Phenotyping for Drought Response and Drought Tolerance in
Potato
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  Abstract: Abstract As climate changes, maintenance of yield stability requires efficient selection for drought tolerance. Drought-tolerant cultivars have been successfully but slowly bred by yield-based selection in arid environments. Marker-assisted selection accelerates breeding but is less effective for polygenic traits. Therefore, we investigated a selection based on phenotypic markers derived from automatic phenotyping systems. Our trial comprised 64 potato genotypes previously characterised for drought tolerance in ten trials representing Central European drought stress scenarios. In two trials, an automobile LIDAR system continuously monitored shoot development under optimal (C) and reduced (S) water supply. Six 3D images per day provided time courses of plant height (PH), leaf area (A3D), projected leaf area (A2D) and leaf angle (LA). The evaluation workflow employed logistic regression to estimate initial slope (k), inflection point (Tm) and maximum (Mx) for the growth curves of PH and A2D. Genotype × environment interaction affected all parameters significantly. Tm(A2D)s and Mx(A2D)s correlated significantly positive with drought tolerance, and Mx(PH)s correlated negatively. Drought tolerance was not associated with LAc, but correlated significantly with the LAs during late night and at dawn. Drought-tolerant genotypes had a lower LAs than drought-sensitive genotypes, thus resembling unstressed plants. The decision tree model selected Tm(A2D)s and Mx(PH)c as the most important parameters for tolerance class prediction. The model predicted sensitive genotypes more reliably than tolerant genotype and may thus complement the previously published model based on leaf metabolites/transcripts.
  PubDate: 2023-12-01
Developments in Automated Potato Storage Management
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  Abstract: Abstract Potato is a major staple food around the world; some of this production requires storage. The need for storage is largely driven by climatic conditions which dictate when the crop should be planted and harvested. The objective of potato storage is always to keep the crop in its best possible condition throughout, limiting inputs and interventions to those that achieve this aim, whilst minimizing losses and wastage. Increasingly, the storage techniques used to provide a consistent supply of potatoes to meet demand have to be sustainable. This focus on efficiency is important as cost pressures increase. Strategically, for those who are now without CIPC in Europe, the loss of chemistry has re-focused their approach to storage. It is now necessary to consider the wider impact of multiple factors on storage.’Genotype x environment’ interactions need to be better understood now that a major non-specific control (CIPC sprout suppressant) is not available. This genetic base is crucial to provide a good starting point with new varieties. Better natural dormancy and improved low temperature tolerance will reduce the need for chemical solutions and lower the risk from acrylamide. Risk must be understood better to forecast potato performance in store so crops can be identified in advance as having better prospects of delivering markets’ needs. Having a ‘one-size-fits-all’ tool like CIPC allowed industry to lose sight of the holistic challenges of sustainability. The pace of development of storage solutions slowed, and it was easier to take a simple — but flawed — approach that relied on a single solution. Now that CIPC is no longer there, the European storage industry has some re-focusing and catching up to do.
  PubDate: 2023-12-01
Dormancy and Physiological Age of Seed Tubers from a Diverse Set of Potato
Cultivars Grown at Different Altitudes and in Different Seasons in Kenya
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  Abstract: Abstract The study was conducted to determine the dormancy and physiological age characteristics of diverse potato genotypes as influenced by growing altitudes and seasons for future breeding strategies and optimal patterns of use. Dormancy and sprouting characteristics have an impact on tuber production, storability and seed quality for planting and ware for consumption and the market. This study presents the results of dormancy and physiological age measurements conducted on 47 potato genotypes grown at three altitudes with three replications at each location and in two contrasting growing seasons. The seed tubers were evaluated at low altitude under darkness on moist sand storage conditions to assess their dormancy release, number of sprouts, sprout weight, sprout length and percentage tuber weight loss. Results showed significant (p < 0.001) differences among genotypes, locations and seasons, and significant interactions between these factors for days to dormancy release, number of sprouts per tuber at dormancy release and at 45 days after dormancy release, length of longest sprout, weight loss percentage of unsprouted and sprouted tubers at dormancy release and at 45 days after dormancy release, respectively. There was a wide variation in time to dormancy release (54 to 136 days); most genotypes showed medium to long dormancy. Seed tubers grown at low altitude showed longer dormancy than those grown at higher altitudes, while genotypic differences in dormancy were very consistent across environments. Genotypes strongly differed in sprouting characteristics and weight loss. There were highly significant interactions between altitude and season for all variables assessed, except for the number of sprouts 45 days after dormancy release and the weight loss after sprouting. Generally, the genotypic effects were larger than those of altitude, season and the interaction effects for all variables evaluated. This paper will allow variety selection to optimize seed quality at planting and minimize storage losses while providing new targets for breeders.
  PubDate: 2023-12-01
Sodium Octanoate–Functionalized Chitosan Coating Reduces Dry Rot Caused
by Fusarium Sambucinum (AUC-TZ-1) in Potato Minitubers in Storage
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  Abstract: Abstract Potato (Solanum tuberosum L.) is a crop susceptible to infection by microorganisms such as Fusarium spp., which are usually controlled with chemical fungicides. However, these fungicides can cause adverse effects on human and ecosystem health. Thus, the search for non-toxic alternatives is essential to reduce the negative impact of fungicides. This study aimed to identify fungal isolates from potato minitubers that were showing dry rot symptoms and evaluate whether the combination of chitosan (CH) and sodium octanoate (SO) exhibits higher antifungal effects in vitro and in vivo than the application of individual compounds. Five pathogens of the Fusarium genus were isolated. The most aggressive isolate (AUC-TZ-1) showed 98.67% identity with F. sambucinum, which was previously reported as a potato pathogen. The antifungal index (AI) of CH, SO and the CH + SO biocomposite showed that individual compounds and the biocomposite led to significant inhibition (p ≤ 0.05) of the mycelial growth of the pathogen by 100%, 62.1% and 100%, respectively, at the highest concentrations tested (7.5, 0.49 and 7.5 + 0.49 mg/mL, respectively). However, only CH and CH + SO caused a significant reduction in the dry rot severity index of potato minitubers inoculated with F. sambucinum (AUC-TZ-1). The results suggest that these compounds could be used in postharvest potato dry rot control.
  PubDate: 2023-12-01
Evaluating Progress of Indian Potato Processing Industry: an Updated
Review
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  Abstract: Abstract The potato processing sector contributes immensely towards global food security. Growing urbanisation and consumers’ shift to convenient ready-to-eat foods have led to tremendous growth in the Indian potato processing sector, particularly with French fries being one of the largest selling food items. India is the major producer of potato in the world, but only 7% of total produce is processed (compared to industrialised countries, this percentage is over 80). Recent trends in changing food consumption habits worldwide indicate that the Indian potato processing industry has potential scope for further expansion. The impediments to take forward the processing industry include technical factors (poor quality seed; lack of scientific knowledge for developing new varieties; impact of diseases like late blight) and natural resources (decreasing water tables, erratic rainfall and changing weather conditions). The major challenge confronting the industry lies is in the continuous supply of quality raw material. The review addresses the challenges and identifies aspects for improvement and development of sustainable potato processing industry.
  PubDate: 2023-12-01
Eco-Safe Management of Potato Early Blight Caused by Alternaria solani
(Ellis and Martin) Jones and Grout
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  Abstract: Abstract Potato early blight caused by Alternaria solani (Ellis and Martin) Jones and Grout is widespread and highly destructive depending upon the variety grown, weather conditions and inoculum load in the soil. The disease is characterized by a series of concentric rings on the host leaf. This also results in a “target spot” effect. The photosynthetic area of the plants is reduced, resulting in a decrease in the number and size of potato tubers. The efficacy of eco-friendly agents applied through tuber treatment and foliar application on disease intensity was evaluated in two field trials. In Rabi 2020–2021 and Rabi 2021–2022, soaking tubers with Beejamrutha (5 l/10 kg tubers) for 30 min and two foliar sprays of Jeevamrutha @ 5% at the interval of disease onset proved to be most effective and economical for environmentally friendly control of potato early blight under field conditions.
  PubDate: 2023-12-01
The Potential of Coating Half-cut Tubers with Natural Biostimulants in
Improving Yield Components and Inducing Resistance Against Grey Mold and
Black Scurf in Potato
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  Abstract: Abstract In Tunisia, farmers resort to tuber half-cutting to lower the cost of purchased potato tubers prior to planting. Few, if any, studies have analysed the potential of biostimulants to enhance potato yield when applied to half-cut tubers. In this study, we are reporting the effects of coating half-cut tubers with different biostimulants on grey mold and black scurf severities, the accumulation of the defence-related enzymes peroxidase and catalase and also on the productivity of the potato cultivar ‘Spunta’ under both greenhouse and field conditions. The treatments include beneficial microorganisms Trichoderma harzianum T.INAT, Paraburkholderia phytofirmans, and the commercial products Panoramix (mixture of Trichoderma sp., mycorrhizae, PGPR bacteria, and additives), Trianum (T. harzianum T22) and MycoUp (mycorrhizae Glomus iranicum). Overall, the treatments resulted in a significant reduction of grey mold and black scurf diseases. This reduction was allied with a “bio-priming” phenomenon which consisted of an earlier accumulation of either peroxidases or catalase. As anticipated, the half-cutting of tubers led to a lower cover rate, above-ground biomass, and a yield with decreased rates of up to 9.9%, 9.8%, and 10.7%, respectively. The use of the biostimulants on half-cut tubers was beneficial and led to an increase of 30% in the amount of yield. Panoramix was the most efficient treatment, resulting in the highest yield of potatoes amounting to 40.11 tons/ha. This finding demonstrates the benefits of biostimulant-based coating of half-cut tubers on potato yield, which might compensate for potato production deficits.
  PubDate: 2023-12-01
Acrylamide in Thermally Processed Potato Products
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  Abstract: Abstract High levels of acrylamide have been detected in French fries and potato crisps. The main pathway for acrylamide formation is from free asparagine and reducing sugars in the Maillard reaction. Asparagine provides the backbone of the acrylamide molecule. The rate of acrylamide formation increases significantly when asparagine is heated with carbonyl compounds such as reducing sugars. According to current knowledge, thermal load applied during processing in terms of temperature and duration has a significant influence on acrylamide formation in potato products depending on the concentrations of total reducing sugars and free asparagine in potato tubers. Glucose and fructose contents are generally regarded as a good indicator of the acrylamide forming potential of potato tubers. The latest regulation from the European Commission requires that food business operators take mitigation measures to lower the acrylamide content of their products below benchmark values. Therefore, efforts should be directed to reduce the amount of acrylamide formed in potato products. Excessive accumulation of acrylamide in potato products can be prevented during processing if the exposure of the product surface to high temperatures is limited. This is possible with temperature-programmed frying, which targets outer crust layers and cooked interiors for French fries. The same effect can be obtained by blanching potato strips in the microwave for a few seconds before deep frying. Combined technologies, such as partial baking followed by radio frequency post-drying, can also be used to control acrylamide formation during processing.
  PubDate: 2023-12-01
Evaluation of Water Productivity in the Main Areas of Potato Cultivation
in Iran
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  Abstract: Abstract Considering the limited water resources, water productivity is the main factor in crop productivity. This study was conducted based on the Global Yield Gap Atlas (GYGA) protocol on potatoes in Iran. This protocol estimates the potential yield, water productivity, and water requirement of the plant considering agro-climatic zones (CZs), reference weather stations (RWS), buffer zones, and soil type in each buffer zone. To simulate the growth and yield of crops in current and future climatic conditions, crop simulation models are needed, and choosing a suitable model can be very important. SSM-iCrop2 model was applied in this study, and the potential yield, water use efficiency, water requirement, and the number of irrigation times at RWS were estimated for 10 years (2006 to 2015). As a result, 35 reference weather stations with 83% and 15 climates with 94% coverage were selected. Estimation of potential yield revealed that the highest potential yield was related to the cold region (for example, Shahrekord station), with an average of 90.8 t. ha−1and the lowest potential yield was obtained from the warm region (Masjedsoleyman station) with an average of 41.8 t. ha−1. The results showed that warm regions had lower yield potential than cold ones, which could be due to lower radiation exposure as a result of the autumn cultivation of potatoes in warm regions. Based on these results, Sareyn, Lalehzar, and Abali, as cold regions, and Miandeh-Jroft, Rudan, Dezful, and Omidiyeh (Paygah) stations, as warm regions, had the highest water productivity with an average of 12.18, 11.71, 13.20, 13.99, 11.29, 10.32, and 9.61 kg m–3, respectively. But the lowest water productivities were related to the middle region (not cold and not warm for example Sonqor and Eslamabad-e-Gharb stations) which were 5.91 and 5.69 kg m–3, respectively. Spring cultivation in cold regions (such as Sareyn, Lalehzar, and Abali) causes higher yields. Autumn cultivation in warm stations produces low yield but higher water productivity due to lower evaporation and rainwater supply. This study indicated that water productivity is highly related to climate and potential yield at selected RWS. Less water requirement can result in higher water productivity. Based on the results of this study, an appropriate planting pattern for potatoes can be produced and delivered to farmers in Iran.
  PubDate: 2023-12-01
Physical Pretreatments to Enhance Purple-Fleshed Potatoes Drying: Effects
of Blanching, Ohmic Heating and Ultrasound Pretreatments on Quality
Attributes
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  Abstract: Abstract In this study, it was aimed to investigate alternative pretreatment solutions including blanching, ultrasound and ohmic heating to limit the adverse effects of drying conditions on the functional properties of purple-fleshed potato (PFP). In order to investigate how functional properties were saved with pretreatments carried before drying, treatment-specific operational conditions were studied for each method. Control drying (drying of potato slices without any pretreatment) was used for comparison. Thus, whether the pretreatment created any considerable change in the functional properties of potato samples was evaluated. Voltage gradients of 20 and 40 V/cm and application times of 2 and 4 min were the studied operational conditions of ohmic heating, whereas ultrasound amplitude levels of 50% and 100% were used with the same application time values. For the blanching process, potato slices were dipped in the boiling water and kept for 2 min. Results showed that the drying time of PFP was independent of pretreatments. Total phenolic content, antioxidant activity (DPPH and ABTS) and anthocyanin content of potato slices subjected to low amplitude short-term ultrasound pretreatment were found to be higher than the corresponding values of the control group. Also, the total phenolic and anthocyanin contents of potato samples treated before drying by ohmic heating at a high electric field (40 V/cm) for 4 min were better than the control samples. The closest colour values to fresh potato were obtained on the samples pretreated by ultrasound application (US-50/2). Depending on pretreatments, any significant change in the rehydration ratio of dried PFP was observed. Also, FTIR spectroscopy with chemometric analyses was studied and results indicated that ohmic heating and ultrasound treatments revealed high potential as innovative pretreatments applied before drying of PFP slices and they were superior with respect to control one.
  PubDate: 2023-12-01
Shoot Production of Solanum tuberosum L. ‘Yansi’ Using a Simple
Continuous Immersion Airlift Bioreactor Culture System
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  Abstract: Abstract A simple in vitro shoot regeneration method was developed for Solanum tuberosum L. ‘Yansi’ using a simple continuous immersion airlift bioreactor culture system with Murashige and Skoog (MS) medium. Growth characteristics such as fresh weight, dry weight, length of shoots, and the number of nodes per shoot, length, and width of leaves were compared between cultures raised in bioreactor cultures and solid cultures. Shoots developed in bioreactor cultures showed higher values for these parameters than shoots grown in solid cultures. The leaf thickness and width of the upper epidermis, lower epidermis, palisade, and spongy tissues were also higher with shoots cultured in bioreactor cultures. Microscopic observation of the lower epidermal surface indicated that the stomata of leaves grown on liquid medium were normal and elliptical with narrow pores, whereas leaves grown on solid medium showed round, abnormal, and closed stomata. Studies on the optimization of the culture medium of bioreactor cultures were carried out. Of the varied strengths of MS media (0.5, 1, 1.5, and 2.0 ×) tested, 2.0 × MS medium was found suitable for shoot cultures. Similarly, varied levels of ammonium (NH4+) and nitrate (NO3−) (20/100, 40/80, 60/60, 80/40, and 100/20 mM) were tested for the growth of shoots in bioreactor cultures; 20/100 mM ratio of NH4+:NO3− was found suitable. The results indicate that bioreactor cultures with modified MS medium could be used for mass propagation of Solanum tuberosum L. ‘Yansi’ shoots.
  PubDate: 2023-12-01
Correction to: In-Season Potato Crop Nitrogen Status Assessment from
Satellite and Meteorological Data
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  PubDate: 2023-09-21