COMBINING ABILITY STUDIES FOR YIELD AND ITS COMPONENTS IN CLUSTERBEAN

Abstract

Six homozygous but highly diverse and well adapted genotypes of clusterbean (Cyamopsis tetragonoloba L. Taub.) were crossed in a half diallel fashion to obtain 15 FI crosses. In Kharif, 1990, the parents and 15 FI s were raised in a randomised complete block design with three replications at CCS Haryana Agricultural University, Hisar. Each parent and FI was sown in a single row of 2.8 m length spaced 45 cms and plants spaced to 10 cm distance. All recommended cultural practices and plant protection measures were adopted to raise a good crop. Data on days to first flowering, days to maturity, plant height (cm), number of branches, clusters and pods per plant, pod length (cm), seeds per pod and seed yield per plant(g) were recorded on five random and competitive plants in each of parents and FIs. The combining ability analysis was carried out following Method 2, Model 1 of Griffing [1].