Author(s):

Vishal Gandhi, RS Taya, Anil Kumar and Rao Pankaj

Abstract: The sunflower genotypes were evaluated to identify the sources of resistance against collar rot caused by Sclerotium rolfsii Sacc. A total of thirty-six sunflower genotypes were screened for their relative resistance against collar rot disease in field under natural conditions at Oilseeds Research Area CCSHAU Hisar in 2014-2015. Only hybrid PSH-1962 showed resistant reaction and twenty one genotypes (nine hybrids, four CMS and eight restorers) showed moderate resistance against collar rot disease. Ten genotypes (one hybrid, four CMS and five restorers) showed moderately susceptible reaction while, three genotype (one hybrid, and two CMS) showed susceptible reaction and one genotype (Restorer) showed highly susceptible reaction against collar rot disease.

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