Screening black gram genotypes under artificially inoculated conditions for powdery mildew resistance

DOI: 10.18805/LR-3796    | Article Id: LR-3796 | Page : 907-912
Citation :- Screening black gram genotypes under artificially inoculated conditions for powdery mildew resistance.Legume Research-An International Journal.2018.(41):907-912
S. Priyanka, S. Rangaiah and R. Pavan priyachinki1@gmail.com
Address : Department of Genetics and Plant Breeding, University of Agricultural Sciences, Raichur-584 133, Karnataka, India.
Submitted Date : 19-10-2016
Accepted Date : 8-06-2017

Abstract

An effective and durable genetic resistance in black gram genotypes against powdery mildew provides a cost effective and reliable strategy to reduce the yield losses and save quality of the harvest. The identification of potential resistant source(s) is the most crucial step in disease resistance breeding. In the present study, out of 116 genotypes screened, genotype LBG-645 recorded lowest per cent disease severity of 0.77 and was found to be highly resistant to powdery mildew under green house condition. Under in vitro condition also, LBG-645 which was found to be highly resistant with 3.33×103 conidia colony, 0.94 per cent of leaf area covered by powdery mildew and 1.00 colony per leaflet was recorded.  Hence, resistant genotype LBG-645 must be used in further breeding programme for the development of resistant varieties of black gram against powdery mildew.

Keywords

Black gram Durable genetic resistance Disease resistance breeding In vitro condition Powdery mildew.

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