SALIMATH, P.M.KAMPLI, NAGARAJ2019-10-192019-10-192001-08-07Th-5978http://krishikosh.egranth.ac.in/handle/1/5810132155An investigation was carried out to compare the mating and selection schemes in breeding for higher productivity in the cross ICCV-10 X BG-256 of chickpea. For this purpose biparental mating (BIP) was attempted in F2 of this cross to generate BIP population. At the same time, with selling, two breeding bulks VIZ., selected bulk (SB) and random bulk (RB) were created by applying appropriate standard selection procedures. Parents, Fi BIP SB RB and check Annigeri were evaluated for yield and its important component traits in the Botany garden of Agriculture College, Dharwad. The mean values of BIP were higher than those of SB and RB for all the characters under study. Mean value of BIP even exceeded the mean of F, for all the characters except plant height and 100-seed weight. In general BIP showed wider range in desirable direction. The magnitudes of genotypic' and phenotypic variations were enhanced in BIP for all the characters except secondary branches. Similarly, estimates of heritability and genetic advance were also high in BIP for all the characters followed by that of SB and RB. Biparental mating also resulted in shifts in the magnitude as well as the direction of correlation co-efficients. Negative association of 100-seed weight with seed yield was observed in SB and RB while it was positive and significant in BIP. Similarly, negative association was observed between plant height and 100-seed weight and pods per plant and 100-seed weight in SB and RB which became positive though non-significant in BIP Altered correlations indicated that intermating in F2 was effective in breaking some undesirable linkages. The direct effects of pods per plant and 100-seed weight as well as indirect effects of other traits through these two traits were positive but low in selfs while they were higher in BIP. In general, BIP population showed higher frequency of Lransgressive segregants followed by SB and RB for individual traits as well as for combination of important component characters. Though the study has clearly highlighted the distinct advantage of BIP over selfing series, in a self-pollinated crop like chickpea, it can be used only sparingly. However, the results have shown that, SB is the next better choice rather than RB in the selfing series for improving yield.ennullThesis