International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 7, Issue:7, July, 2018

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(7): 4238-4245

Evaluation of Yard Long Bean (Vinna unguiculata subsp. sesquipedalis) Genotypes for Collar Rot and Web Blight
V.Sivakumar1*, V.A. Celine1 and V.K. Girija2
1Department of Olericulture, Kerala Agricultural University, Vellayani, Trivandrum-695522, India
2Department of Plant Pathology, Kerala Agricultural University, Vellayani, Trivandrum, India
*Corresponding author

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.

Keywords: Collar rot, Rhizoctonia solani, Web blight, Yard long bean

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How to cite this article:

Sivakumar, V., V.A. Celine and Girija, V.K. 2018. Evaluation of Yard Long Bean (Vinna unguiculata subsp. sesquipedalis) Genotypes for Collar Rot and Web Blight.Int.J.Curr.Microbiol.App.Sci. 7(7): 4238-4245. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.