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- W2181750566 abstract "Genotypic and phenotypic variability, heritability, genetic advance, correlation and direct path analysis were studied in cluster bean. Combined analysis of variance in eighteen phenotypic characters indicated significant difference in genotypes, sowing dates and their interaction. The high phenotypic coefficient of variation for branches/plant (43.33) followed by leaf area (37.43), number of clusters/plant (36.69), seed yield/ plant (27.30), dry pod yield/plant (21.55), plant height (20.09), number of pods/cluster (19.71) indicated scope for further improvement in these traits. The genetic advance was above 35 per cent in branches/plant (85.92%), number of clusters/plant (74.60%), leaf area (72.92%), seed yield/ plant (54.86%), dry pod yield/ plant (42.44%), plant height (40.05%) and number of pods/cluster (37.79%). Broad sense heritability (> 90%) was recorded in number of clusters/ plant (98.69%), seed yield/plant (97.56%), plant height (96.77%), dry biomass (96.76%), number of branches/plant (96.24%), dry pod yield/plant (95.59%), leaf area (94.55%), number of pods/cluster (93.06%), days to maturity (92.50%) and days to 50% flowering (91.07) indicated the presence of large number of fixable additive factors and hence these traits could be improved through selection. Low heritability with low genetic advance was recorded in pod length, pod width, number of seeds/ pod, 100-seed weight and days to flower initiation showed lowest share of direct path coefficient effect is indicative of non-additive gene action predominance which could be exploited through heterosis breeding. The positive and significant correlation was observed in seed yield/plant with dry pod yield/plant (0.96**), number of pods/ cluster (0.81**), 100 – seed weight (0.78**), number of clusters/plant (0.75**), branches/plant (0.73**), seed recovery (0.70**), germination (0.67**), number of seeds/pod (0.63**) and dry biomass/plant (0.62**). Whereas negative and significant correlation was recorded in days to flower initiation (-0.66**), plant height (-0.54**), days to maturity (-0.38**) and days to 50% flowering (-0.33**). Plant height, number of seeds/pod, days to 50% flowering, number of clusters/plant, dry pod yield/ plant and dry biomass/plant had direct positive effects on seed yield. Based on high magnitude of heritability, genotypic and phenotypic coefficient variation, genetic advance, correlation and direct path effects, it could be concluded that determinant genetic effects of phenotypic expression of these characters are fundamentally of additive type. The traits like pod length, pod width, number of seeds/pod, 100-seed weight and days to flower initiation are to be improved using heterosis breeding." @default.
- W2181750566 created "2016-06-24" @default.
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- W2181750566 date "2014-01-01" @default.
- W2181750566 modified "2023-09-27" @default.
- W2181750566 title "GENETIC VARIABILITY AND SOWING DATES EFFECT OF CLUSTER BEAN (CYAMOPSIS TETRAGONOLOBA L. TAUB) GENOTYPES IN SEMI ARID REGION OF MAHARASHTRA, INDIA" @default.
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