Evaluation of some rice genotypes for resistance to bacterial blight, Xanthomonas oryzae pv Oryzae
1994; Indian Society of Plant Genetic Resources; Volume: 7; Issue: 1 Linguagem: Inglês
ISSN
0976-1926
Autores Tópico(s)Plant-Microbe Interactions and Immunity
ResumoRice germplasm comprising some Indian and exotic cultivars, donors for ‘bacterial blight resistance’ in the Indian rice breeding programme and some scented primitive rice cultivars, were evaluated for reaction to five genetically characterized isolates of Xanthomonas oryzae pv. oryzae. All these cultivars could be classified into 13 diverse groups on the basis of their reaction spectra. BR 285-5-6-6-2, IET 8320, IET 8326, IET 8584, IET 9691, IET 10745, IET 11005, IET 12188, IR 32720-139-2-1-1-2, PERH 2 and PR 110 were resistant to all the five isolates. Out of the scented/basmati type landraces of rice, Xiang Geng Cao was resistant to all the five isolates; eight others namely Karnal Local, Basmati 1, Basmati 372, Basmati 376, Basmati 397 Basmati C-622, Basmati 5888 and Basmati Sufald were resistant to only two weekly virulent isolates. Resistanoe to bacterial blight for the scentecllbasmatl type rices should be sought in landraces or transferred from non-scented rices.
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