Abstract
Field evaluation of 50 wild rice MAGIC population along with susceptible check, TN 1, stem borer resistant donor O.glaberimma (Acc.No. CG 14) and local checks TRY 2 and TRY 3 was done at Anbil Dharmalingam Agricultural College and Research Institute, Trichy. Five MAGIC genotypes, WRM-6, WRM-12, WRM-57, WRM-111 and WRM-126 showed resistance at the vegetative stage while 12 genotypes viz., WRM-3, WRM-6, WRM-30, WRM-56, WRM-57, WRM-58, WRM-72, WRM-74, WRM-111, WRM-112, WRM-115, WRM-126 along with O.glaberriema showed resistance to yellow stem borer during the reproductive stage. Correlation studies were carried out with biophysical parameters and yellow stem borer damage. Results revealed that the trichome density was significantly negatively correlated whereas, stem girth was significantly positively correlated at the vegetative stage and significantly negatively correlated at the reproductive stage. While, plant height, top internodal length and leaf length were significantly negatively correlated and leaf breadth is significantly positively correlated. Key words: Yellow stem borer, resistance, wild rice MAGIC population, biophysical characters
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