Additional Sources of Resistance to Wilt and Root Rots in Chickpea

Abstract

Some 1283 accessions collected mainly from Madhya Pradesh and Rajasthan, India, and Bangladesh were evaluated in the wilt and root rot nursery at ICRISAT between 1985 and 1989. The susceptible cultivar JG62 showed 100% mortality every season. The frequency of Fusarium oxysporum f.sp. ciceris, Rhizoctonia bataticola (Macrophomina phaseolina) and F. solani was 77, 9 and 5%, respectively. Out of 1283 accessions, 117 (23 in 1985/86, 3 in 1986/87 and 92 in 1987/88 seasons) showed less than 20% mortality in the first year and 40 of these showed less than 10% mortality in the second year. Although the lines that showed less than 10% mortality had smaller 100-seed weight and most flowered later than the high yielding control cv. Annigeri, most showed higher yield potential than cv. Annigeri, which gave a yield of 301 kg/ha. Among the new ICC entries, 14532, 14619, 14631, 14735, 15125 and 15233 gave yields in 1988/89 in excess of 800 kg/ha and can be used as sources of resistance