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Black pepper (Piper nigrum L.), belonging to the Piperaceae family, is the oldest known spice. Genetic variability and correlation for yield and yield attributes were estimated in nine black pepper genotypes. Analysis of variance revealed significant differences for all the characters studied. Maximum Genotypic Coefficient of Variation (GCV) and Phenotypic Coefficient of Variation (PCV) were recorded for rachis weight vine-1 followed by dry berry yield vine-1 and fresh berry yield vine-1. These characters exhibited high heritability coupled with high genetic advance over mean indicating the considerable contribution of additive genetic variance in the expression of these characters. Dry berry yield vine-1 had a highly significant and positive correlation with rachis weight vine-1, fresh berry yield vine-1, spike length and lateral branch length both at the genotypic and phenotypic level. Genotypes HP 2173 (HP1117 x Thommannkodi), OPKM, HP 780, Hp 1411 and HP 820 were found promising for the economically important characters and have the potentiality to release as new commercial varieties. [ABSTRACT FROM AUTHOR]

Beneficial effects of F2 bi-parental (BIP) mating have been amply demonstrated in several self-pollinated crops. To explore such beneficial effects in Dolichos bean, a highly popular grain legume vegetable and self-pollinated crop in southern Karnataka, an investigation was carried out to assess the impact of inter se mating in F2 population derived from HA 4 (a high yielding photoperiod in-sensitive determinate type released variety) × GL 37 (a photoperiod sensitive in-determinate type germplasm accession) on nine quantitative traits inter-relationship and frequency of transgressive segregants. Significant shift in correlation coefficient of fresh pod yield plant-1 with racemes plant-1 from -0.33 (in F3 progenies) to 0.19 (in BIP F3 progenies) suggested the possibility of increasing the number of racemes plant-1 without penalty in fresh pod yield plant-1 through selection. The frequency of individuals that surpassed higher scoring parent for days toflowering, racemes plant-1, fresh pods node-1, fresh pod yield plant-1 and 100-fresh seed weight was higher from BIP F3 than those from F3 progenies. The results suggested better prospects of deriving superior pure-lines with desired traits/combination of traits from inter-mated population. [ABSTRACT FROM AUTHOR]