Genetic variability and association studies in adzuki bean [Vigna angularis (Willd.) Ohwi and Ohashi] under natural farming system
| dc.contributor.advisor | Katna, Gopal | |
| dc.contributor.author | Sapna | |
| dc.date.accessioned | 2022-02-21T06:45:18Z | |
| dc.date.available | 2022-02-21T06:45:18Z | |
| dc.date.issued | 2021-11-12 | |
| dc.description.abstract | The current study aimed to estimate genetic diversity among 36 adzuki bean genotypes including 2 checks (HPU51, Local Totru) evaluated in Randomized Block Design in three replications during Kharif, 2021 under Zero Budget Natural Farming system. Analysis of variance revealed significant differences among genotypes for most of the traits studied, suggesting prevalence of sufficient genetic variability and scope for the selection of these traits. Phenotypic coefficient of variation (PCV) was observed to be higher than genotypic coefficient of variation (GCV) indicating the presence of environmental influence in governance of traits. Moderate PCV as well as GCV were observed for plant height, branches per plant, seed yield, 100-seed weight, harvest index and seed yield per plant. Broad sense heritability was high (>70%) for seed yield per plant followed by 100-seed weight, plant height, harvest index, seed yield, pods per plant, branches per plant, protein content, cluster per plant, biological yield, pods per cluster and days to 75 per cent maturity. Correlation analysis revealed that seed yield had significant positive correlation with pods per plant, clusters per plant and pods per cluster indicating that selection through these traits would be effective. Path analysis revealed that seed yield, cluster per plant, pod per cluster, seeds per pod, plant height, days of 50 per cent flowering, protein content, pods per plant, 100-seed weight and number of branches as important traits for direct selection for yield. Genetic diversity studies using Mahalanobis D2 -statistics grouped 36 adzuki bean genotypes into eight clusters. Maximum genotypes were placed in cluster I (19 genotypes) followed by cluster II (7 genotypes), cluster III, IV, V and cluster VI (2 genotypes each), cluster VII and VIII (1 genotype each). Among eight clusters, the highest intra cluster distance was observed for cluster III . The highest inter-cluster distance was observed between cluster III and VIII followed by VII and VIII . Cluster I and IV and Cluster II and III had the smallest cluster distances, indicating that genotypes were less diverse than genotypes in the other clusters. The high intra-cluster distances revealed that the lines within the same cluster were heterogeneous. On the basis of mean performance, total of 6 genotypes i.e., EC030270, EC340265, EC120460, EC340257, IC34957 and IC341947 have been identified superior for further research purpose | en_US |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810182636 | |
| dc.keywords | content,plant,clusters,genotypes. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 74 | en_US |
| dc.publisher | Palampur | en_US |
| dc.sub | Genetics and Plant Breeding | en_US |
| dc.theme | To estimate nature and magnitude of variation and association among seed yield and their component traits and to identify diverse and elite germplasm lines of adzuki bean suited to natural farming system | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Genetic variability and association studies in adzuki bean [Vigna angularis (Willd.) Ohwi and Ohashi] under natural farming system | en_US |
| dc.type | Thesis | en_US |