Resistance of hill rice genotpyes against Xanthomonas oryzae pv oryzae in mid-hills of Himachal Pradesh
Study was conducted to identify hill rice genotypes showing resistance to the Rajiana isolate of bacterial blight in the mid-hills of Himachal Pradesh. In addition hill rice varieties and land races were also evaluated for resistance. The results showed that recessive genes xa 5, xa 8 and xa 13 and dominant gene Xa 21 imparted resistance to the prevailing isolate. Among different varieties of rice released in the state, seven viz. Himalaya 2, HPU 741, HPU 2216, HPU 957, HPR 1068, HPR 1156 and RP 2421 were found to be resistant. All the 14 traditional cultivars of HP, six hill rices from J&K and six japonica varieties tested were all found to be susceptible. Four out of 11 hill varieties from Almora viz. VL 25867-2-2, VL 30424, VL 30425 and VL 81 showed resistance to this isolate.
Author : R P Kaushik, S K Rana, Dhirendra Singh and Ashok Kumar
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