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Publisher: Indian Council of Agricultural Research   (Total: 6 journals)

Fishery Technology     Open Access   (Followers: 2)
Indian Horticulture     Full-text available via subscription   (Followers: 9)
Indian J. of Agricultural Sciences     Open Access   (Followers: 6, SJR: 0.271, h-index: 14)
Indian J. of Animal Sciences     Open Access   (Followers: 4, SJR: 0.272, h-index: 13)
Indian J. of Fisheries     Open Access   (Followers: 2, SJR: 0.246, h-index: 3)
Indian Phytopathology     Open Access   (Followers: 2)
Indian Phytopathology
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  This is an Open Access Journal Open Access journal
     ISSN (Print) 0367-973X - ISSN (Online) 2248-9800
     Published by Indian Council of Agricultural Research Homepage  [6 journals]
  • Development of stem rust resistant durum wheat genotypes by identification
           and introgression of the Sr2 gene

    • Authors: A. DIVYA; T.L. PRAKASHA*, V.G. DUBEY, S.V. SAI PRASAD A.N. MISHRA
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Integrated management of leaf blight of Isabgol caused by Alternaria
           alternata

    • Authors: RAJESH KUMAR MEENA*; S.S. SHARMA B. UPAYDHYAY
      Abstract: The experiments were conducted at Department of Plant Pathology, Rajasthan College of Agriculture, Udaipur, in Rajasthan. Alternaria alternata was isolated from leaves of Isabgol and observed to be pathogenic under artificial conditions. Various fungicides, plants extracts and varietal screening were tested against the fungus. Among five fungicides Mancozeb was found most effective against Alternaria alternata in vitro and in vivo conditions followed by Copper oxychloride and Zineb. Relative efficacy of five plants extracts viz., Azadirachta indica, Allium sativum, Datura stramonium, Argemone maxicana and Lantana camara in different concentrations were studied by poisoned food technique. Among the five plant extracts, Allium sativam was found most effective followed by Neem leaves (Azadirachta indica). In general, higher concentrations of plant extract were more effective in reducing mycelial growth and sporulation as compared to lower concentrations. Among ten cultivars MIB-125, PB-7 and PB-62 showed moderate resistance to blight disease and local Isabgol variety gave high susceptible reaction to blight disease where none of cultivar was found completely free from disease.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Quantification of confrontation between Pythium aphanidermatum and
           Trichoderma asperelloides

    • Authors: BABAK S. PAKDAMAN; EBRAHIM G. MOHAMMADI* MOHSEN NADERPOOR, SABRINA SARROCCO GIOVANNI VANNACCI
      Abstract: Trichoderma species are well-appreciated filamentous fungi applied in agriculture for biological control and biofertilization. One of the primary steps to screen for potent biological control isolates and/ to study the effect of the transgene(s) involved in the biological control of phytopathogenic fungi is to perform confrontation or dual culture tests. Despite the comprehensiveness of the test, it still suffers from the lack of a reliable methodology for the mathematical data collection and statistical analyses. Here, different aspects of data collection are critically studied and new parameters are introduced.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Impact of intercropping on powdery mildew severity and yield of Vigna
           mungo and Vigna radiata

    • Authors: RAM DAYAL MEENA*; N.L. MEENA
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Influence of seed exudation on pre-emergence damping-off in soybean

    • Authors: BHAGYASHALI V. HUDGE*; G.D. DESHPANDE
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • New sources of stem rust resistance in durum wheat

    • Authors: A.N. MISHRA*; K. KAUSHAL, V.G. DUBEY S.V. SAI PRASAD
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Biochemical changes in chilli against Colletotrichum capsici

    • Authors: KARTAR SINGH*; S.K. KHIRBAT, L.K. CHUGH VEENA JAIN
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Standardization of inoculation methodology for Fusarium roseum causing
           gummy stem blight of bottle gourd

    • Authors: CHATUR S. THAKARE; ANIL P. GAIKWAD*
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Effect of culture filtrate of Fusarium equiseti on seed germination and
           seedling growth of cumin (Cuminum cyminum)

    • Authors: RAMCHANDRA SUTHAR SINGH*; D.P. BHATT P.N. BHATT
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Defense gene induction in Camelina sativa upon Alternaria brassicae
           challenge

    • Authors: NAYANAKANTHA; N.M. CHAMIL, SANDYA RAWAT, SAJAD ALI ANITA GROVER*
      Abstract: Rapeseed and mustard are one of the most important oilseed crops of India and the production and productivity of this crop has been greatly hampered by the disease “Alternaria blight” caused by the necrotrophic fungal pathogen Alternaria brassicae. A study on defense gene induction was undertaken to explore the signalling mechanisms that underline the defense responses of resistant Camelina sativa to alternaria leaf spot disease. The Expression of four selected defense-related genes viz., PR-1, PR-3, PDF1.2 and GST was examined after inoculation of the seedlings of C. sativa with A. brassicae at different time intervals. Transcripts of some or all four defense-related genes accumulated at a greater level upon challenge inoculation with A. brassicae locally as well as systemically. These defense-related genes might play an important role in rendering C. sativa resistant to infection byA. brassicae. Methyl jasmonate or salicylic acid also induced some or all of the above mentioned pathogen responsive defense-related genes to varied levels. Pathogenesis-related (PR) genes such as defensin (PDF1.2), which is often used as a marker gene for jasmonic acid (JA) signalling pathway, and PR1, used as a marker gene for salicylic acid (SA) signalling pathway were also induced in response to SA or JA treatment or vice versa, deviating from the signalling pathway in Arabidopsis. These results suggest the involvement of both JA and SA signalling pathways and their cross-talk in C. sativa conferring its resistance to A. brassicae.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Efficacy of Quinone outside inhibitor (QoI) and de-methylation inhibitor
           (DMI) fungicides against grape anthracnose

    • Authors: DINESH S. SHETTY; SHUBHANGI P. NARKAR, INDU S. SAWANT* S.D. SAWANT
      Abstract: Studies were conducted during 2010-11 monsoon season to evaluate the efficacy of fungicides belonging to QoI and DMI groups in controlling anthracnose disease in vineyard at the National Research Centre for Grapes, Pune. Commercial formulations of azoxystrobin, kresoxim methyl, trifloxystrobin + tebuconazole, pyraclostrobin + metiram, flusilazole, tebuconazole, difenoconazole were evaluated. Carbendazim was included for comparision. In 2010, the weather was wet and humid during the 30 days of trial, favoring disease development and the percent disease index (PDI) values in untreated control reached 89.50. In all the fungicide treatments, the maximum PDI values were less than 6.63. The area under the disease progress curve (AUDPC) in untreated control was 837.31 but less than 100 in fungicide treatments. In 2011, PDI of anthracnose gradually increased from 0.00 to 40.44 (AUDPC 167.78) in untreated vines as the weather was not very conducive for development of anthracnose. The PDIs remained less than 2.56 in vines treated with fungicides (AUDPC less than 20.34) which were significantly lower than control. Bioassay studies indicated systemic acropetal and translaminar movement of azoxystrobin, kresoxim methyl and flusilazole in grape.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Integrated management of collar rot in apple caused by Phytophthora
           cactorum

    • Authors: I.M. SHARMA*; H.S. NEGI SHWETA SHARMA
      Abstract: Evaluation of different combinations of in dividually effective management inputs viz., biocontrol agents, bio-resources and fungicides against collar rot (Phytophthora cactorum) in apple indicated that a combined application of Trichoderma harzianum-1 (TH1), Enterobacter aerogenes- 2 (EA-2) and metalaxyl MZ (0.25%) provided complete control when applied 7 days prior to inoculation under pot and 20 days before planting under nursery conditions, whereas under orchard conditions it increased the shoot length up to 32.2 cm as compared 6.1 cm in untreated plants. Next best treatments were an integrated application of T. viride-5 (TV5) + Bacillus subtilis 11 (BS11) + metalaxyl MZ (0.25%) and TH1+ EA-2+ mancozeb (0.4%) in order. Pre-inoculation / pre-planting combined application of mustard cake, Vitex leaves and metalaxyl MZ also provided complete control both under pot and nursery conditions. Under orchard conditions, it increased the shoot length by 29.5 cm and restricted the collar rot lesion up 24.0 per cent. Amongst the combined applications of BCAs, bio-resources and fungicides, a mixed application of TH1, EA-2, mustard cakes and metalaxyl MZ exhibited complete control both under pot and nursery conditions, when applied before inoculation/ planting as well as their simultaneous application with target pathogen. Under orchard conditions, it increased the shoot length by 36.1 cm and restricted the collar rot lesion up to 32.1 percent. Replacing mustard cake in the above treatment either with Vitex leaf or bio-fumigation with mustard plants or botanical (Melia azedarach seed +Vitex leaf) cow urine decoction were also equally effective under orchard conditions (34.2-36.9 cm shoot length as against 6.1cm in untreated one). Integrating approach grafting with drenching of botanical cow urine decoction (10%) and metalaxyl MZ (0.25%) was most effective and increased the shoot length by 40.8 cm and healed the lesion up to 36.8%.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Status of late blight disease (Phytophthora infestans) of potato at Gurez
           in Jammu and Kashmir

    • Authors: Z.A. BADRI*; F.A. RAINA, T.A. WANI VASEEM YOUSUF
      Abstract: Late blight (Phytophthora infestans), was found prevalent in all the potato growing villages of Gurez with incidence 9.99 to 53.33% and 14.76 to 57.77% and intensity 6.61 to 38.90% and 5.71 to 46.75% in 2011 and 2012, respectively. The maximum mean disease incidence (24.44% in 2011 & 55.55% in 2012) and intensity (15.95 in 2011 & 42.82% in 2012) was recorded in village Wanpora of lower Gurez and minimum mean disease incidence (13.88 & 28.88% include similarly) and intensity (6.16 & 17.72%) was recorded in village Gujran of Upper Gurez. Both the late blight incidence and intensity increased with crop growth stage from flowering to dehaulming in both the years.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Biochemical changes due to fungal infestation in stored seeds of some
           vegetable crops

    • Authors: G. SETHUMADHAVA RAO; S. LAXMI NARAYANA, B. BHADRAIAH C. MANOHARACHARY*
      Abstract: Fungi associated with seeds are known to bring about certain biochemical changes in seeds during storage and degrade seed constituents like carbohydrates, free fatty acids, amino acids, and total phenols besides bringing down the germination, plant growth and yield. The association of Aspergillus flavus, A. niger, A.  fumigatus, A. terreus and Cladosporium cladosporioides increased during storage period showing gradual increase with an increase in period of storage in the samples of all the leafy vegetables reaching maximum in 12th month samples. Fungal numbers, free fatty acids, total amino acids and total phenols increased with increase in storage period attaining maximum at 12 months storage. The amount of reducing sugars was observed to decrease during storage compared to post harvest. 
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Effect of meteorological factors on progression of Alternaria leaf blight
           of mustard and comparison of Logistic and Gompertz growth models in
           predicting disease severity

    • Authors: SUNITA MAHAPATRA; SRIKANTA DAS*
      Abstract: The step down multiple regression analysis (MRA) was carried out to determine the meteorological parameters influencing in variation of disease severity of Alternaria leaf blight (Alternaria brassicae and A. brassicicola) of mustard. Disease severity estimates (Y) was considered  as  dependent variable, where as other weather parameters like maximum (Tmax) and minimum temperature (Tmin); maximum (RHmax) and minimum relative humidity (RHmin); total rainfall (RT); wind velocity evening (WVevening) and morning (WVmorning); vapour pressure noon (VPnoon) and morning(VP morning); and bright sunshine hour (BSH) were used as independent variables. The weather variables were found to influence the disease severity differently when crops were shown at different dates of five sowing time for the two consecutive years, 2007-08 to 2008-09. The Gompertz equation was best linearized with the disease progress data followed by the logistic and the untransformed data sets. The linear prediction equations are (1) Y= 3.203-0.356 ( Tmin) + 0.015 (RHmin) for 20th October sowing; (2) Y = - 1.929 + 1.634 (WVmorning) + 0.067 (RT) for 5th November sowing; (3) Y = - 121.91 + 1.57(Tmin) + 1.083(RHmax) + 0.29(RHmin) - 2.27(VPnoon) - 0.61(VPmorning) - 17.17(WVevening) + 17.83(WVmorning) + 1.65(BSH) + 0.113(RT) for 20th November sowing; (4) Y = - 5.131 + 0.25 (VPnoon) + 0.256 (BSH) + 0.057 (RT) for 5th December sowing; (5) Y = - 3.19 + 0.235(Tmin) for 20th December sowing. Gompertz transformation is best for linerizing and prediction of disease severity in all dates of sowing and in early sowing Tmin, RHmin and WVmorning influenced the disease progression.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Morpho-cultural and pathogenic variability in Rhizoctonia solani isolates
           from rice, maize and green gram

    • Authors: P.K. MISHRA; ROBIN GOGOI*, P.K. SINGH, S.N. RAI, AVINASH SINGODE C. MANJUNATHA
      Abstract: Twenty two isolates of Rhizoctonia solani collected from rice (10), maize (10) and green gram (2) were studied for their variability with respect to cultural, morphological characters and pathogenicity. Colony appearances of the isolates were sparse, sparse fluffy, cottony and cottony fluffy. Most of the isolates were sparse and light brown in colour. Out of the three patterns of radial growth namely fast, medium and slow, twelve isolates were medium growing where growth completed within 72h, eight isolates were fast growing (48h) and two isolates were slow growing (96h or more). Sclerotia of the isolates were light brown, brown, dark brown and black in colour and formed as central, sub-central ring, peripheral ring, scattered and irregular manner. Majority of the isolates produced high number of sclerotia ranging from 40 to 60 within 3 to 10 days. Cross infectivity of the isolates was positive in all the three hosts with variability in their pathogenicity. Four isolates of rice, two each of maize and green gram isolates were found more aggressive and produced higher incidence of disease which could be utilized in resistant breeding programmes of their respective hosts. Cluster analysis showed four separate groups for the rice and maize isolates of R. solani, however the green gram isolates clustered with maize isolates.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Effect of plant age and water stress on the incidence of post flowering
           stalk rot of maize caused by Fusarium verticillioides

    • Authors: M.K. KHOKHAR*; S.S. SHARMA RENU GUPTA
      Abstract: Eight different stages of maize plants of 25, 35, 45, 55, 65, 75, 85 and 95 days were evaluated for the effect of host age on PFSR under artificial inoculations. The intensity of disease varied from 2.6 to 7.7 at these eight different stages. Plant is most susceptible when it is 55 days old with disease rating i.e. 7.7, followed by 65 days and 25 days old plants was least susceptible with 2.6 disease rating. So, it could be concluded that 55 to 65 days old plants were highly susceptible to F. verticillioides which coincides with silking stage. Stalk rot incidence was significantly reduced 60.37 to 15.03 per cent by when additional irrigation provided to the crop at tasselling and silking stage. Maximum lodging 47.68% was noticed at irrigation level- I (6-7) while, minimum at level- II with 11.14%. All the three irrigation levels differed significantly with each other and least disease rating 3.2 observed at irrigation level- II, followed by 5.2 at level- I. whereas, maximum disease rating 7.3 was recorded with irrigation level III. Low inoculum density of pathogen i.e. 7.1 c.f.u. of F. verticillioides X 104/g soil at irrigation level II whereas, irrigation level-III showed with 15.9 c.f.u. of F. verticillioides X 104/g soil which was significantly superior with irrigation level-I i.e. 11.4. c.f.u. of F. verticillioides X 104/g soil. The effect of different irrigation levels on grain yield recorded in irrigation level-I yielded 1123.61 g/10 plants, whereas, and irrigation level- II and irrigation level- III recorded 1450.22 and 939.39 g/10 plants, respectively.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Adult plant resistance in some Indian wheat cultivars and postulation of
           yellow rust resistance genes

    • Authors: SUBODH KUMAR*; R.P. AWASTHI J. KUMAR
      Abstract: Old wheat varieties were screened against different pathotypes of Puccinia striiformis for yellow rust resistance both at seedling in temperature controlled green house as well as adult plant stage under field conditions. By applying the gene matching technique, different combinations of three yellow rust resistance genes, viz. Yr2, Yr9 and Yr18 were characterized. Promising adult plant resistance was observed on the varieties GW173, HUW234, HW741, K8027, K9006, K9107, NIAW34, Raj3765, SKW196, VL404, VL616 and WH542 consistently during cropping season 2010-11 and 2011-12.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Management of stripe rust of barley using fungicides

    • Authors: R. SELVAKUMAR*; MADHU MEETA, P.S. SHEKHAWAT, R.P.S. VERMA INDU SHARMA
      Abstract: Under field conditions, various fungicide molecules were validated for their effectiveness on barley stripe rust consecutively for two years under artificial field epiphytotic conditions at two locations. Seven fungicides viz., Propiconazole 25%EC (Tilt @ 0.1%), Tebuconazole 25.9% m/m EC (Folicur @ 0.1%), Triademefon 25%WP (Bayleton @ 0.1%), Propiconazole 25%EC (Tilt @ 0.05%), Tebuconazole 25.9% m/m EC (Folicur @ 0.05%), Triademefon 25%WP (Bayleton@ 0.05%), and Mancozeb 75%WP (Dithane M45 @ 0.2%) with various concentrations were tested for their effectiveness in controlling barley stripe rust severity. All fungicide applications resulted in lower disease severity and higher grain yields than untreated check plots. In Ludhiana, all the fungicides @ 0.1% concentrations reduced disease severity ranging from 83.12% to 92.82% except Dithane M45@ 0.2% (23.18%). In Durgapura, Folicur @ 0.1% and Bayleton @ 0.1% reduced the disease severity to maximum of 83.34% and 85.83% respectively. The average performance of fungicides at both the locations revealed that Bayleton @ 0.1% gave the best per cent disease control to 89.33% followed by Folicur @ 0.1% (87.23%). Significant higher yield was obtained with Bayleton @ 0.1% (65.93 q/ha) followed by Bayleton @ 0.05% (63.97 q/ha).
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
  • Characterization of bacteria from the rhizosphere of Som tree with
           multiple growth promoting traits

    • Authors: JINTU RABHA; DHRUVA KR. JHA*, HRIDIP KR. SARMA, AMRITA ACHARYA, USHA CHAKRABORTY BISHWANATH CHAKRABORTY
      Abstract: The present in vitro study was carried out to screen such beneficial rhizobacterial isolates that could be utilised for improvement of growth of som plant (Persea bombycina Kost.), a primary food source of the muga silkworm. Rhizobacteria was isolated from the rhizospheric soil collected from the som germplasm conservation site located at Regional Muga Research Station, Central Silk Board, Boko, Assam (GPS location 25.990 N, 91.250 E). Sixty-one percent of the total 18 isolates showed phosphate solubilisation as well as NH3 production. On the contrary, fewer isolates (33%) produced Indole Acetic Acid in vitro.  Majority of the isolates showed resistance to Penicillin and Vancomycin at concentrations >10mcg. In addition, some of the isolates depicted antagonistic activity against Pestalotiopsis disseminata and Phyllosticta persea, the two phytopathogens responsible for causing grey blight and leaf spot diseases respectively in P. bombycina. Molecular identification of two potent plant growth promoting rhizobacteria (PGPR) isolates was carried out by amplification of their partial 16s rRNA and sequencing. NCBI BLAST search was done to find closest homologs. Sequences were submitted to GenBank and their phylogenetic tree construction was done with closely related standard sequences by DNA maximum likelihood method using MEGA5 software. Based on in vitro results, one PGPR isolate Pseudomonas sp. GUDBPKA301 was screened for in vivo study. A significant improvement in growth measured in terms of increase in shoot length, number of leaves and branches was observed when one year old Som saplings were bacterized under pot conditions. Results clearly suggest that Pseudomonas sp. GUDBPKA301 is a potential PGPR which can be used as an efficient microorganism for enhancement of plant growth in som cultivation.
      PubDate: 2014-05-19
      Issue No: Vol. 67 (2014)
       
 
 
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