Dominance reversal of a bacterial blight resistance gene in some rice cultivars

Abstract

The inheritance of resistance to Xanthomonas oryzae during flowering. The dosage effect of the resistance gene isolate PXO61 (from the Philippines) in five rice cultivars was causes this reversal of dominance because the heterozygous studied. The same gene confers resistance in the five cultivars. plants are susceptible at booting and resistant during The pattern of segregation indicates a monogenic recessive flowering. This gene, designated Xa6, is linked to Xa4, factor when the plants are inoculated at the booting stage, but another dominant gene for resistance, with a crossover value it is monogenic dominant when the plants are inoculated of 26%.