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Acharya Narendra Deva University of Agriculture & Technology, Ayodhya

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Subject: Genetics and Plant Breeding × Author: Dutt, Akriti × Start date: 2020 × Type: Thesis ×
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    ThesisItemOpen Access
    Germplasm evaluation, character association, genetic divergence, combining ability and heterosis for different quantitative traits in mungbean [Vignaradiata (L.) Wilczek
    (ANDUAT, Kumarganj,Ayodhya, 2021-03) Dutt, Akriti; Singh, Vinod
    The present investigation entitled “Germplasm evaluation, character association, genetic divergence, combining ability and heterosis for different quantitative traits in mungbean [Vigna radiata (L.) Wilczek]” was comprised of two experiments, namely, the germplasm evaluation experiment (experiment-I) and combining ability experiment (experiment-II). Both experiments were conducted at Instructional Farm of Acharya Narendra Dev University of Agriculture and Technology, Narendra Nagar (Kumarganj), Ayodhya during Zaid and Kharif seasons of 2019. Thirteen plant characters were studied in both experiments. In the germplasm evaluation experiment (experiment-I), sixty germplasm lines of mungbean and four checks were evaluated in augmented design in Zaid as well as Kharif seasons of 2019. The data was used for correlation and path coefficient analysis as well as non-hierarchical Euclidean cluster analysis. In the combining ability experiment (experiment-II), line x tester set of sixty F1s and their 19 parents with one check (P. Mung 4) were evaluated for thirteen characters and data was subjected to analysis of variance, line x tester analysis, estimation of heterosis and direct and indirect selection parameters. In germplasm evaluation experiment (experiment-I), SML 823 produced (8.77g) highest seed yield per plant followed by DGGV 2, BM 4, HUM 12, TM 96-2 and ADT 3 in Zaid season. In Kharif season, the highest seed yield per plant was produced by DGGV 2 (12.63 g) followed by ADT 3, P. Mung 6, P. Mung 5, P. Mung 2, MH 2-15. Biological yield per plant, pods per plant, clusters per plant, harvest-index and pods per cluster exhibited highly significant and positive correlation with seed yield per plant in Zaid season. Seed yield per plant recorded highly significant and positive association with biological yield per plant, pods per plant, clusters per plant, harvest-index, primary branches per plant and seeds per pod besides having significant positive correlation with pods per cluster, plant height and pod length. Biological yield per plant followed by harvest-index and days to 50% flowering exerted highest positive direct effects on seed yield per plant in Zaid season. Pods per plant, pods per cluster, seeds per pod and 100-seed weight emerged as the most important indirect seed yield components in mungbean for Zaid season. Biological yield per plant followed by pods per plant and harvest-index exerted high order positive direct effects on seed yield per plant in Kharif season. Pods per plant, primary branches per plant, clusters per plant, seeds per pod, harvest-index, pods per cluster and biological yield per plant were identified as most important indirect seed yield attributes in mungbean for Kharif season. In the present study, the 64 genotypes of mungbean were grouped into ten distinct non-overlapping clusters using Non-hierarchical Euclidean cluster analysis in Zaid as well as Kharif seasons, indicating presence of substantial genetic diversity in the germplasm collections evaluated in the present study in context of Zaid as well as Kharif seasons. The major clusters in the aforesaid two divergence analyses, in general, contained genotypes of heterogeneous origin.