National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Forty four accessions of yard long bean were screened for resistance against collar rot and web blight caused by Rhizoctonia solani at College of Agriculture, Vellayani, Thiruvananthapuram. Evaluations were conducted in vivo and in vitro for disease reaction. Among 44 accessions screened under field conditions, fourteen accessions exhibited collar rot symptoms at seedling stage, the rest of the accessions were free from collar rot under field conditions. There was no incidence of web blight throughout growing period. To confirm resistance, evaluation was conducted under artificial epiphytotic conditions. Based on disease severity, accessions were categorized in to five groups Viz., resistant, tolerant, moderately tolerant, susceptible, and highly susceptible. Twelve accessions showed resistant reaction; four accessions were tolerant; ten accessions moderately tolerant; five were susceptible and thirteen accessions highly susceptible to collar rot and web blight.
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