Vol. 11 No. 2
Genetic analysis and interrelationships among yield attributing traits in pole and bush type dolichos bean (Lablab purpureus L.)
Author(s): I. DAS, V. D. SHENDE, T. SETH, Y. YADAV AND A. CHATTOPADHYAY
Abstract: Evaluation of thirteen pole and seven bush type advanced lines/varieties of dolichos bean was carried out in two consecutive years to study the genetic variability and character associationships among different quantitative characters with pod yield. Significant variation among eight quantitative traits irrespective of genotypes having differences in growth habit was observed. Higher estimates of PCV and GCV were observed for number of pods per plant and pod weight in pole and bush types, and pod length in bush type, indicating much scope for their improvement through selection. The characters pod weight, number of pods per plant, pod length and pod width were characterised by high heritability coupled with high genetic advance in both types. Interrelationships among component characters and pod yield revealed a significant and positive correlation with number of pods per plant at genotypic level in pole type and none of the traits in bush type. However, positive correlation with pod yield was depicted by pod length, pod width and number of seeds per pod in pole type and by number of pods per plant in bush type. Study on path coefficient analysis suggested that yield of dolichos bean could be improved through direct selection for number of pods per plant and pod weight in pole type, and number of pods per plant, pod weight and number of seeds per pod in bush type.
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