SCREENING OF RICE GERMPLASM FOR RESISTANCE TO YELLOW STEM BORER SCIRPOPHAGA INCERTULAS WALKER.

Twenty nine entries during kharif 2011 and 53 entries during kharif 2012 were screened under natural field conditions for resistance to stem borer. During kharif 2011, highest incidence of stem borer as percent white ears was recorded in TN-1 whereas six cultures were resistant with ‘1’ scale, incidence ranged between 1.9-5.1% WE. During kharif 2012, highest incidence recorded in RpPatho-02 with 13.13% WE whereas five cultures are resistant with scale ‘1’, incidence ranged between 2.01-5.13% WE. The culture CR 2711-76 and CR 3005-230-5 were resistant to stem borer at reproductive stage during both the years. The culture CR 3005-77-2 was moderately resistant in both the years where as CR 3006-8-2 was moderately resistant in one year and moderately susceptible in another year.