Author(s):

Sheshaiah, Dushyantha Kumar BM, Gangaprasad S, Gowda TH, Hosagoudar GN and Shashidhar HE

Abstract: Rice serves as a pillar for food security in many developing countries. The biotic and abiotic stress is adversely affects the rice production; especially rice blast is one of the critical limiting factors responsible for reduction in rice production. In present study, germplasm lines were screened for leaf blast reaction and their per se performance assessed for yield and yield related parameters under blast hot spot conditions. A total of 35 germplasm lines were screened during Kharif 2014 for blast resistance under field conditions by UBN technique at AHRS, Ponnampet. The resistant checks (Tadukan and Tetep), shown highly resistant response, KPR-1, KPR-2, Kiruwana and IR-64 recorded resistant response and whereas Jaya, Intan, Ambemori, Bheemasaali, Chittiga and FR-13A were recorded highly susceptible to the leaf blast along with susceptible checks (CO-39 and HR-12). The analysis of variance revealed significant differences among the genotypes for all the studied characters. The landrace Kiruwana recorded highest seed yield per plant followed by Tunga, whereas the check entry HR-12 recorded lowest seed yield per plant followed by Jeerige sanna. The resistant genotypes identified through screening and per se performance can be used further for development of leaf blast resistant high yielding genotypes.

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