EVALUATION OF RICE GERMPLASM FOR BLAST AND QUALITYANALYSIS IN SOME RESISTANT DONORS

Abstract

Evaluation ofthree hundred and five diverse rice (Oryza sativa L var.
indica) genotypes against leaf blast led to the identification of 16 resistant
and 28 tolerant cultures. Among 125 gora rices, only 10 showed tolerant
reaction; none exhibited complete resistance. Six upland rice cultivars
(Brown gora- HRC 14, Black gora - HRC 358, Kalakeri, Bhattadhan, N
22 and Dular) appeared to possess durable resistance. Quality analysis of
. 15 resistant donors' suggested that some of them like Salumpikit,
Bhattadhan, Kalakeri, CR 143·2·2, Brown gora HRC 14 and Khao Vano
Veri possessed multiple desirable quality traits and hence should
preferably be used in the varietal improvement programme to enhance the
possibility of recovering segregants simultaneously improved for blast
resistance and quality.