Indian Society of Genetics & Plant Breeding

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INHERITANCE AND ALLELIC RELATIONSHIPS BETWEEN GENES CONFERRING RESISTANCE TO XANTHOMONAS CAMPESTRIS PV. ORYZAE (ISHIYAMA) DYE IN RICE (ORYZA SATIVA L.)

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The inheritance of resistance to a pathotype IX05 collected from north western India
was studied in three lines of rice B 76, ARC 10464 and CNGS 20083. These lines
were crossed to a susceptible cultivar Taichung Native 1 to generate Fl, F2 and F3
generations. The' reaction of Fl and segregation pattern in F2 and F3 generations
suggest that the resistance of B 76 and CNGS 20083 was conditioned by a dominant
and a recessive gene respectively. Breeding lines ARC 10464 carried two independently
inherited dominant genes. Since the F2 generations obtained from intercrosses of
these three lines segregated for susceptible plants it is concluded that B 76, ARC
10464 and CNGS 20083 have different genes conferring resistance to pathotype IXC5
of X. c. pv. oryzae.
 

Keywords: X. c. pv. oryzae, resistance, pathotype

Info

Year: 1998
Volume: 58
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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