 Subjects -> GARDENING AND HORTICULTURE (Total: 37 journals)
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- Black bean aphid populations and chlorophyll composition changes as
responses of guelder rose to aphid infestation stress conditions
Authors: Sylwia Goławska, Iwona Łukasik, Artur Goławski
Pages: 3 - 12
Abstract: Aphis fabae Scop. is phloem-feeding insect that cause substantial damage to horticulare and agriculture worldwide due to feeding – related damage and the transmission of economically important plant viruses. These aphids cause a detrimental effects in attacked organs, like depletion of photoassimilates. Insect feeding can among others reduced chlorophyll catabolism. In the present investigations we determined the chlorophyll a and b levels (SPAD readings) in uninfested leaves and in Aphis fabae-infested leaves of Viburnum opulus shrubs, wild plants and garden variety, which were grown in green areas around Siedlce, east central Poland. Feeding by A. fabae affected chlorophyll a + b level. The insect feeding reduces the concentration of photosynthetic pigment in the infested shrubs. The level of chlorophyll in plants occupied by aphids was clearly lower than the level in plants where aphids were not found. We also found that chlorophyll levels increased with the progress of growing season, the level of chlorophyll differed between date of survey, being higher for the latest survey (mid-June) and that the place where the plant is located is important, wild V. opulus have slightly more level of chlorophyll compared to garden ones. Chlorophyll level might be useful as an indicator of plant responses to aphid damage.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.4503
Issue No: Vol. 22, No. 2 (2023)
- Effects of salicylic acid application on germination, growth and
development of rough lemon (Citrus jambhiri Lush.) under salt stress
Authors: Murat Güneri, Zeynel Dalkılıç
Pages: 13 - 26
Abstract: Rough lemon (Citrus jambhiri Lush.) – RL, is used as a rootstock for citrus plants in saline conditions. NaCl causes an osmotic stress on plants mainly preventing the water uptake by the roots and thus reducing the plant growth. The objective of this study was to determine the effects of salicylic acid (SA) on germination of seeds and the growth and development of seedlings of RL rootstock under salt stress. For seed germination, a study was conducted in a completely randomized design in a 4 × 4 factorial scheme (SA at 0.00, 0.25, 0.50, or 1.00 mM and NaCl at 0, 50, 100, or 200 mM) with 4 repetitions, totaling 64 plots, of 25 seeds per plot. RL seeds were incubated in SA solutions for 24 h. Then, they were treated with NaCl-containing water in Petri dishes and incubated in the growth chamber at 25°C. For greenhouse experiment, a study was conducted in a randomized complete block in a 4 × 4 factorial scheme (SA at 0.0, 0.5, 1.0, or 2.0 mM and NaCl at 0, 50, 100, or 150 mM) with 3 repetitions, totaling 48 plots, of 2 plants per plot. Some morphological and physiological characteristics were determined. While germination time was extended, germination ratio and radicle extension were decreased in seeds under salt stress compared to control. Moreover, in these conditions the leaf membrane permeability and leaf falling were increased. In turn, plant height, diameter, root and shoot dry weight, leaf relative water content, and leaf chlorophyll were decreased in seedlings. Salt stress had negatively affected seed germination from 97.5% in control to 23.5% in 200 mM NaCl. However, SA treatments significantly decreased plant height to 67.8 cm in 2.0 mM compared to 80.1 cm in control in RL rootstock.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.4798
Issue No: Vol. 22, No. 2 (2023)
- Effect of chitosan on post-harvest shelf life of persimmon (Diospyros kaki
L.)
Authors: Mehboob Alam, Shaukat Ali, Syed Tanveer Shah, Zawar Hussain, Liaqat Ali, Abdur Rab, Asim Muhammad, Sultan Akbar Jadoon, Masood Ahmad, Imran Ahmad
Pages: 27 - 43
Abstract: Persimmon is a climacteric fruit and very perishable. Changes in several physiological attributes greatly affect its quality and market value. The current study was designed to assess the effect of chitosan solution (an edible coating material that can improve postharvest performance) on physico-chemical attributes of persimmon fruit during storage. Persimmon fruits were harvested, cleaned and then dipped in various chitosan concentrations (1%, 2% and 3%) for 5, 10 and 15 min. The treated fruits were stored at 25–29°C, 55–70% RH for 28 days. Results indicated that fruits coated with 3% chitosan solution had maximum volume, firmness, ascorbic acid, titratable acidity and minimum juice, TSS, pH, TSS/acid ratio, decay incidence and weight loss. Similarly, the performance was better in fruits dipped for 15 min. It was concluded that persimmon fruits dipped in 3% chitosan solution for 15 min could improve its postharvest performance when stored under ambient condition.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.727
Issue No: Vol. 22, No. 2 (2023)
- The optimization growth of Dracocephalum forrestii in RITA® bioreactor,
and preliminary screening of the biological activity of the polyphenol
rich extract
Authors: Izabela Weremczuk-Jeżyna, Liwia Lebelt, Dorota Piotrowska, Weronika Gonciarz, Magdalena Chmiela, Izabela Grzegorczyk-Karolak
Pages: 45 - 59
Abstract: Dracocephalum forrestii is a medicinal plant growing in China. The aim of the present study was to large-scale cultivation of D. forrestii transformed shoots in a temporary immersion system based on previously-optimized Murashige and Skoog (MS) medium supplemented with 0.5 mg/L N-benzyl-9-(2-tetrahydropyranyl)-adenine (BPA) and 0.2 mg/L indole-3-acetic acid (IAA) and physical (under blue LED) conditions. Shoot proliferation, and biomass and secondary metabolite accumulation in the shoots were assessed after a three-week growth period in a RITA® bioreactor. The levels of polyphenols in four types of extract (hydromethanolic extracts – mixtures with a 20%, 50%, and 80% methanol content and infusion) were determined using high-performance liquid chromatography (HPLC). Within three weeks, the culture increased its biomass 283-fold, with a proliferation ratio of 40.5 shoots or/and buds per explants. The most efficient solvent for extraction of phenolic compounds from raw material turned out to be 80% methanol solution; the highest polyphenol content was 40 mg/g DW (dry weight) with acacetin rhamnosyl-trihexoside (12.97 mg/g DW) and rosmarinic acid (10.68 mg/g DW) predominating. The intensive growth of the biomass of the culture allowed 570 mg of polyphenolic compounds to be obtained per liter of the medium. The antioxidant potential of extract of D. forrestii shoots was evaluated using three free radical-scavenging tests, and the inhibition of lipid peroxidation assay. In the study, the cytotoxic, antibacterial and antifungal potentials of the extract were also determined.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.4817
Issue No: Vol. 22, No. 2 (2023)
- Fungicides and biotechnical agents in the protection of heathers against
Pestalotiopsis sydowiana and their influence on plant growth
Authors: Adam T. Wojdyła, Magdalena Ptaszek, Anna Jarecka-Boncela
Pages: 61 - 72
Abstract: In the protection of heathers against shoot dieback caused by Pestalotiopsis sydowiana, the highest percentage effectiveness of 92.6% to 100% was found on plants sprayed 12 times every 7 days with the active substances: iprodione, pyraclostrobin + boscalid and trifloxystrobin and with the biotechnical agents containing: microcrystalline chitosan and extract from grapefruit seed and pulp, with an efficacy of 76.9% to 100%. The active substances like chlorothalonil, fluopyram + trifloxystrobin, iprodione, pyraclostrobin + boscalid, as well as microcrystalline chitosan and extract from grapefruit seed and pulp also stimulated plant growth. Heather plants sprayed with these agents and also those sprayed with cyprodinil + fludioxonil, trifloxystrobin and potassium carbonate + monopotassium phosphate were found to produce the highest number of new shoots. An increase in the fresh weight of the aboveground parts of the heather plants of more than 55.7% compared with the control plants was found after spraying the plants with the active substances such as: fluopyram + trifloxystrobin, iprodione, pyraclostrobin + boscalid, cyprodinil + fludioxonil, trifloxystrobin and with the biotechnological agents containing microcrystalline chitosan extract from grapefruit seed and pulp, and potassium carbonate + monopotassium phosphate. Similarly, the highest average dry weight of the aboveground parts was found after the application of these agents.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.4492
Issue No: Vol. 22, No. 2 (2023)
- Multifunctional living mulches for weeds control in organic apple orchards
Authors: Joanna Golian, Zbigniew Anyszka, Joanna Kwiatkowska
Pages: 73 - 84
Abstract: A trial assessing the suitability of multifunctional living mulch to maintain the soil and reduce weed infestation was carried out in an organic apple orchard in the years of 2019-2020. Perennial plants (Alchemilla vulgaris, Fragaria vesca, Mentha piperita) and annual crops (Tropaeolum majus and Cucurbita maxima) were grown in the in the rows of the apple trees. The weeds number and soil weeds coverage in tree rows were assessed. Regardless of the living mulch species utilized, the soil resulted to be mostly covered by perennial weed species such as: Equisetum arvense and Taraxacum officinale and annual species such as: Lamium purpureum, Stellaria media, Galinsoga parviflora, Capsella bursa-pastoris and Poa annua, which were the most common species also for the natural cover used as control. However, all living mulch species limited weed infestation and M. piperita, F. vesca and T. majus most strongly limited weeds growth. It is concluded that living mulch species can be a feasible practice to manage the soil on the tree rows in organic orchards.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.4473
Issue No: Vol. 22, No. 2 (2023)
- Biochemical composition and antioxidant activity of Moroccan plum
cultivars
Authors: Youssef Ait Bella, Said Bouda, Youssef Khachtib, Abdelmajid Haddioui
Pages: 85 - 97
Abstract: Biochemical composition and antioxidant activity were analyzed for 15 plum cultivars grown in different climatic regions of Morocco where is considered as an important tree crops. Fruits were analyzed by determining 21 parameters. Total polyphenols, flavonoids, anthocyanin, antioxidant activity, total soluble solids, vitamin C, titratable acidity, ash, moisture, dry matter, juice pH, total sugars, crude fiber, crude proteins, respectively with an average of 6.8 mg GAE/g, 1.24 mg CE/g, 136.54 mg/100 g, 58.06%, 7.91%, 146.19 mg/kg, 1.37%, 1.93%, 83.33%, 16.66%, 2.97, 62.67 mg/g, 0,44% and 0.66% have varied between cultivars. For the mean values of chemical elements (mg/100 g) were 229.77 for potassium, 18.94 for magnesium, 1.31 for iron, 1.13 for zinc, 1.11 for copper, 1.09 for nickel and 0.50 for manganese. Besides, the results showed that plum cultivars are characterized by an important nutritional content. The cultivars Lmozari and Tabarkakacht exhibited respectively the highest total polyphenols (9.39 mg/g) and antioxidant activity (70.65%) comparing with others ones. In this study regarding the nutritional content of plum cultivars will help to improve plum knowledge and select the desired gene pool for multiplication, and which may provide towards enhancing health to the consumer.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.2214
Issue No: Vol. 22, No. 2 (2023)
- Comparative analysis of the biotechnological potential of Knautia drymeia
Heuff. and K. macedonica Griseb
Authors: Małgorzata Chrząszcz, Katarzyna Dos Santos Szewczyk, Agnieszka Dąbrowska, Dorota Tchórzewska
Pages: 99 - 117
Abstract: The present study of Knautia drymeia and K. macedonica is in line with the current trend of searching for new plant species that can potentially be used as medicinal herb materials. A comparative analysis of the morphological and anatomical structure of both species was performed together with the distribution of polyphenolic compounds, which was correlated with the tissue structure of plant organs. Quantitative phytochemical analyses were performed to supplement the biophysical analyses. Both species had a similar morphological, anatomical, and histological structure. Polyphenolic compounds were accumulated in the parenchyma tissue in an organ-specific mode, mainly in the leaves. The phytochemical analyses revealed organ- and species-dependent variations in the polyphenol content. Thus, the highest polyphenol amount was observed in the leaves, with equal levels of total polyphenols and phenolic acids in the leaves of K. macedonica and K. drymeia, respectively. The present study integrates morphological/histological analyses with investigations of the biotechnological/pharmaceutical potential of the studied plants and constitutes an innovative and holistic approach to the current research problem.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.4913
Issue No: Vol. 22, No. 2 (2023)
- Pomological evaluation and GT-biplot analysis of promising open-pollinated
genotypes of apricot (Prunus armeniaca L.)
Authors: Katayoon Oroji Salmasi, Seied Mehdi Miri, Rahim Gharesheikhbayat, Mohiedin Pirkhezri, Daryoush Davoodi
Pages: 119 - 132
Abstract: Apricot is an important stone fruit species with different cultivars cultivated worldwide. Therefore, breeding programs are necessary for developing new varieties with various fruit quality and sensory traits. The present study evaluated morphological and fruit-quality attributes of thirty-seven apricot genotypes selected from several Iranian and Italian open-pollinated cultivars together with Shahroudi cultivar (control) during two growing seasons (2019–2020) using the UPOV descriptor and GT-biplot analysis. The results showed great variability in fruit size among all apricot genotypes studied. Most genotypes showed medium-sized fruits while large and small fruits were observed in eight and four genotypes, respectively. The highest yield was recorded in G-464, G-432, G-588, Shahroudi and G-571. Genotypes G-432, G-464, G-571, G-573, and G-576 had higher fruit weight than Shahroudi. In addition, G-450 and G-553 had the highest TSS (18.2°Brix) and TSS/TA (25.4), respectively. The GT-biplot analysis revealed that fruit weight and dimensions along with pH and TSS could be indicators for selecting superior genotypes. According to the present study, G-464, G-571 and G-450 can be introduced as superior genotypes and it is expected that the inter-crossing of these three have the potential to produce cultivars with sweet fruit, high yield and large fruit size.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.4734
Issue No: Vol. 22, No. 2 (2023)
- Determination of antioxidant activity and phenolic and flavonoid content
of Ocimum basilicum L. callus cultures obtained by different plant growth
regulators
Authors: Aykut Topdemir, Abayhan Buran
Pages: 133 - 149
Abstract: In this study, binary combinations of five plant growth regulators (PGR) were used for the cultivation of Ocimum basilicum L. calluses. Antioxidant properties, phenolic and flavonoid contents of O. basilicum L. calluses were determined by keeping the concentrations and solvents of PGR constant.The total phenolic content of ethanol extracts of O. basilicum L. calluses was between 1.044 ±0.188 and 0.417 ±0.049 mg of GAE/g; total phenolic content of methanol extracts was between 2.547 ±0.110 and 0.701 ±0.095 mg of GAE/g. The total flavonoid content of ethanol extracts was between 2.058 ±0.122 and 0.446 ±0.063 mg of quercetin/g, whereas the total flavonoid content of methanol extracts was between 3.010 ±0.336 and 0.341 ±0.041 mg of quercetin/g. The antioxidant content of ethanol extracts was between 2.826 ±0.141 and 5.736 ±0.201 mmol/g of Trolox equivalent antioxidant capacity (TEAC) and the antioxidant content of methanol extracts was between 4.186 ±0.394 and 1.050 ±0.211 mmol/g of TEAC.
PubDate: 2023-04-28
DOI: 10.24326/asphc.2023.1661
Issue No: Vol. 22, No. 2 (2023)
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