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|Authors:||SANTHOSHA, G. R.|
GASTI, V. D.
AJJAPPALAVARA, P. S.
SHANKARAPPA, K. S
|Title:||GENETIC VARIABILITY, DIVERSITY AND CHARACTER ASSOCIATION STUDIES IN CLUSTER BEAN [Cyamopsis tetragonoloba (L.) Taub]|
|Publisher:||K.R.C. COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)|
|Abstract:||The investigation on “Genetic variability, diversity and character association studies in cluster bean” was conducted in the field of Vegetable Science of Kittur Rani Channamma College of Horticulture, Arabhavi. Forty three genotypes of cluster bean collected from different parts of the country were evaluated in randomized block design with two replications during kharif 2014. The analysis of variance revealed highly significant (both at P = 0.01 and p = 0.05) difference among the genotypes for all the characters studied indicating the higher magnitude of variability in the germplasm. The high estimates of heritability coupled with high values of genetic advance over mean (GAM) were observed for all the characters under study except plant height at 45 DAS, number of days to first flowering, number of days to first vegetable pod harvesting, cluster length, pod breadth and number of seeds per pod indicates predominance of additive component for these traits and hence direct selection would be more effective in improving these traits. The results on correlation and path analysis revealed high positive and significant association of vegetable pod yield per plant with characters viz., number of branches at 45 DAS, stem girth, number of clusters per plant, cluster length, weight per ten pods, seed yield per plant, plant spread (E-W), plant spread (N-S), days to first flowering and days to first pod harvesting and these characters also had high direct and indirect effect on vegetable pod yield per plant. Hence direct selection for these traits would be more useful in the improvement of yield per plant. Based on Mahalonobis’s D2 analysis, the 43 genotypes were grouped into 13 clusters. The cluster XI showed maximum intra-cluster distance (D2 = 2450.455), whereas, the maximum inter cluster distance was observed between cluster XII and XIII (D2 = 20513.842). Among the 23 characters studied, vegetable pod yield per plant contributed maximum (37.76%) to genetic diversity. Top six genotypes viz., CBG-35 (IC – 325832), CBG-2 (SARPAN – 201), CBG-1 (CLBH - 101 – SARPAN), CBG-43 (Pusa Navbahar), CBG-15 (AVT - I GR – 16) and CBG-41 (HGS - 02 – 1) were recorded high pod yield per plant. Therefore, these genotypes can be further assessed for their stability.|
|Theme:||GENETIC VARIABILITY, DIVERSITY AND CHARACTER ASSOCIATION STUDIES IN CLUSTER BEAN [Cyamopsis tetragonoloba (L.) Taub]|
|Research Problem:||GENETIC VARIABILITY, DIVERSITY AND CHARACTER ASSOCIATION STUDIES IN CLUSTER BEAN [Cyamopsis tetragonoloba (L.) Taub]|
|Appears in Collections:||Theses|
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