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Balai, Laxman Prasad
- Biochemical Constituents Of Alternaria Blight of Pathogens in Pigeonpea
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Affiliations
1 ICAR-CAZRI, Krishi Vigyan Kendra, Pali-Marwar (Rajasthan), IN
2 Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN
1 ICAR-CAZRI, Krishi Vigyan Kendra, Pali-Marwar (Rajasthan), IN
2 Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN
Source
Asian Journal of Bio Science, Vol 12, No 1 (2017), Pagination: 1-7Abstract
The common biochemical constituents like chlorophyll and carotenes are important in imparting resistance to the crop plants. Distinct variation in chlorophyll content of pigeonpea leaves of a set of twelve genotypes which were inoculated with representatives ten isolates. In the chlorophyll 'a', chlorophyll 'b', total chlorophyll and carotene content have recorded in higher amounts in resistant genotypes (ICP-7220, IPA-7-2) followed by moderately resistant (ICP-13174 and DA-11) and moderately susceptible (ICP-11294 and ICP-4725), whereas lower amount susceptible (BSMR-736 and ICP-7182) genotypes and highly susceptible genotypes (MAL-24, Bahar). The maximum chlorophyll and carotene content were found in resistant genotypes at early stage of plants with minimum reduction whereas, lowest content was found in susceptible genotypes old plants with highest reduction. It showed same trend in a-virulent isolates in which lowest reduction chlorophyll and carotenes content were found as compared to virulent (aggressive) isolates.Keywords
Genotypes, Resistance, Isolates, Alternaria, Chlorophyll, Carotene.References
- Alka and Singh, S. P. (2004). Survival of Alternaria tenuissima causing leaf spot of pigeonpea in diseased plant debris. Ann. Plant Protec. Sci., 12 (1): 231-232.
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- Mesta, R.K. (2006). Epidemiology and management of Alternaria blight of sunflower caused by Alternaria helianthi (Hansf.) Tubaki and Nishihara. Ph. D. Thesis, University of Agricultural Sciences, Dharwad, KARNATAKA (INDIA).
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- Singh, S.K. and Singh, U. P. (1999). Effect of Alternaria tenuissima (Kunze ex. Pers.) Wiltshire on some biochemical changes in pigeonpea [Cajanus cajan (L.) Millsp.] leaves. Indian J. Plant Pathol., 17 (1/2): 36 - 42.
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- Evaluation of Resistance for Early Blight Caused by Alternaria solani (Ellis and Martin) Sorauer in Tomato
Abstract Views :252 |
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Authors
Affiliations
1 Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN
2 Division of Crop Improvement, Indian Institute of Vegetable Research, Varanasi (U.P.), IN
3 ICAR, CAZRI, KrishiVigyan Kendra, Pali (Rajasthan), IN
1 Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN
2 Division of Crop Improvement, Indian Institute of Vegetable Research, Varanasi (U.P.), IN
3 ICAR, CAZRI, KrishiVigyan Kendra, Pali (Rajasthan), IN
Source
Asian Journal of Bio Science, Vol 12, No 2 (2017), Pagination: 87-99Abstract
A trial was conducted during Rabi season 2011-2012 under field conditions for phenotyping of germplasm under natural conditions that have been developed for resistance against early blight of tomato caused by Alternaria solani. Field studies showed significant variation among all tested germplasmlines with respect to early blight disease assessment. Under field conditions the natural disease severity was scored on a five-point scale (0-5).The per cent disease index (PDI) and area under disease progress curve (AUDPC) value were calculated on the basis of data recorded. The mean AUDPC value in resistant (206 lines); moderately resistant (223 lines); moderately susceptible (129 lines) and susceptible (143 lines) tomato lines ranged between 102.00 to 447.25; 447.26 to 792.50; 792.51 to 1137.75 and 1137.76 to 1483.00, respectively.Keywords
Alternaria solani, Tomato, Natural Inoculums, Phenotyping, Resistant, AUDPC.References
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- Assessment of Technological Gap and Performance of Integrated Diseases Management Approach for Wilt in Cumin
Abstract Views :414 |
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Authors
Affiliations
1 Krishi Vigyan Kendra, Dholpur (Rajasthan), IN
2 ICAR- CAZRI, Krishi Vigyan Kendra, Pali (Rajasthan), IN
1 Krishi Vigyan Kendra, Dholpur (Rajasthan), IN
2 ICAR- CAZRI, Krishi Vigyan Kendra, Pali (Rajasthan), IN
Source
International Journal of Plant Protection, Vol 13, No 1 (2020), Pagination: 76-80Abstract
The experiment was carried out to assessment of technological gap and performance of integrated diseases management (IDM) approach as a resistant variety, chemical seed dressing, soil and seed treatment as a bio-agents for antagonistic fungi on growth of cumin Fusarium oxysporum f. sp. cumini pathogens under field conditions. This experiment was conducted on farmer trials (OFT) villages like Bhusi, Patelo Ki Dhani and Baldo Ki Dhani in Pali distract four year (2014 to 2017). This area is major growing cumin cultivation and here major problem face farmer every year cumin wilt disease due to reduction of yields. During this experiment disease incidence of wilt was observed to be lowest (Disease Incidences 5.00%) when resistant variety GC-4, seed dressing Carbendazim @ 2.0g/ kg with Trichoderma harzianum@ 6g/ kg seed + application of 100 kg FYM enriched with T. harzianum @ 3.0 kg/ha for soil treatment before 15 days of sowing cumin. Maximum disease incidence (24.00%) was observed when traditional farmers practice (no seed treatment). The adoption of recommended improved crop production technology and plant protection measures was poor. The OFT was effective in changing attitude, skill and knowledge of IDM approach and yield increased upto 28.64 per cent more over the traditional farmers practices. Results indicates that IDM approach increased net income by Rs. 20,593/-ha over farmers practices.Keywords
Antagonistic, Wilt Disease, Fusarium oxysporum, Technological Interventions, Trichoderma harzianum.References
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