Indian Society of Genetics & Plant Breeding

Inheritance of resistance to bacterial blight (Xanthomonas oryzae pV. oryzae) in rice (Oryza sativa L.)

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The mode of inheritance and allelic relationship among
genes for resistance to bacterial blight (Xanthomonas
oryzae pv. oryzae, iso-GR) in eight rice (Oryza sativa L.)
cultivars was studied. The reaction of F
1 and segregation
pattern in F2 and F3 generations from the crosses of the
test cultivars with MW-10, revealed the presence of single
recessive gene in IR-54, R732-2-49-2-2, R744-1-107-2-2 and
RP2151-33-2 and two independent recessive genes in
R712-1-G5-2-2, R731-1-73-2-1, R738-1-G4-2- and
R741-1-55-2-2. The resistant gene(s) present in these
cultivars, segregated independently to Xa-1 gene of IRBB-1

Keywords: Rice, bacterial blight, inheritance, resistance.


Year: 2002
Volume: 62
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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