Shinde, D.G. and Satish, D. and Babu, Prashant and Ravikumar, R.L.
(2010)
Fusarium wilt resistance in chickpea recombinant inbred lines.
Karnataka Journal of Agricultural Sciences, 23 (2 ).
324-326 .
Abstract
The inheritance of wilt (caused by Fusarium oxysporum f.sp. ciceris)resistance was studied in the recombinant inbred lines (RILs) of chickpea crosses JG 62 × WR 315 (126 F8 lines) and BG 256 × WR 315 (81 F6 lines) produced from resistant genotype WR 315, early wilting genotype JG 62, and late wilting genotype BG 256. The RILs and their parents were grown in wilt-infected plots in Hyderabad, Andhra Pradesh, India, during the rabi season of 2006. The number of plants showing wilt symptoms in each line was recorded on the 30th day for early wilting, and on the 60th day and 90th day for late wilting. The analysis of variance revealed highly significant differences among the RILs of both crosses. The presence of marked variation at different stages of crop for wilt response was also observed. The RILs of the two crosses differed in mean wilt reaction at stage I. The RILs derived from BG 256 × WR 315 showed significantly lower mean wilt susceptibility compared to the RILs derived from JG 62 × WR 315. The mean percent disease index for BG 256 × WR 315 was significantly lower than that recorded for the other cross, suggesting the influence of parental wilt reaction on the RILs. The mean wilt reaction did not significantly vary at stages II and III. The disease reaction of the RILs showed continuous variation, suggesting the polygenic inheritance of wilt reaction along with major genes.
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