Gall midge Resistance Gene Identification in Promising Rice Genotypes using Gene Specific Markers

Author: P. N. Harathi*, P. Raja Sekhar, K. V. Hari Prasad, B. V. Bhaskar Reddy, U. Vineetha and B. Ravindra Reddy

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Abstract

Rice gall midge, Orseolia oryzae (Wood-Mason) attacks shoots of rice crop which results in forming galls impairing growth and yield. The development of resistant varieties and their cultivation is an important strategy to control rice gall midge. Of the 105 lines tested including the susceptible check against ARGM under field conditions during late kharif, 2015-16 and 2016-17, the entries,RGL-7002, RGL-1, RGL-7003, RGL-7009 andRGL-7010 recorded the damage of less than 10%. These lines were genotyped for the presence of resistant genes using SSR markers. The entry RGL 7003 possessed the alleles for Gm1 and Gm8while RGL 7002 had Gm1and RGL 1 had alleles for Gm 8gene.All three of these entries have the potential to be used as donors in breeding trials.

Keywords

Asian rice gall midge, Gene specific markers

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