1Research Scholar, Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
2Professor, Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
3PG Student, Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
4Professor, Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
*Corresponding author email id: nishant.bhanu@gmail.com
Fusarium wilt caused by Fusarium udum is the most common and destructive disease of pigeon pea. The inheritance of resistance to Fusarium wilt was investigated in pigeon pea using two Fusarium wilt resistant genotypes, namely BWR-133 and BSMR-846 and one susceptible genotype MAL-18. In the cross, of MAL-18 × BSMR-846, analysis of F2 progenies showed a digenic epistatic interaction mechanism of resistance with a 13 (resistant): 3 (susceptible) segregation ratio. Similarly, evaluation of F2s of the cross MAL-18 × BWR-133 also showed digenic epistatic interaction with segregation ratio of 9 (resistant): 7 (susceptible), indicating a complementary gene action. Study of progenies back crossed to resistant parents indicated the segregation of resistant and susceptible progeny in the ratio of 3R:1S in both the crosses. The allelic test between BWR-133 and BSMR-846 confirmed the independence of genes governing resistance.
Pigeo pea, Fusarium, wilt, Inheritance, Digenic, Complementary, Epistasis
