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Inheritance of resistance to alternaria leaf blight in pigeonpea Millsp



Inheritance of resistance to alternaria leaf blight in pigeonpea Millsp



Indian Journal of Genetics & Plant Breeding 53(2): 115-117, 1993 ( )



The inheritance of resistance to leaf blight caused by Alternaria tenuissima was studied in pigeonpea (Cajanus cajan). The F-1, F-2, BC-1 and BC-2 generations involving seven resistant and a susceptible parents were evaluated. The dominance of susceptibility in F-1 generation and segregation into 3S:1R ratio in F-2 indicated that resistance is governed by single recessive gene in each of the varieties used in this study. The monogenic nature of disease resistance was confirmed by bark-cross analysis.

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