Vol. 8, Issue 1 (2020)
Genetic divergence for qualitative traits of fruit yield and its components in custard apple (Annona squamosa L.). Indigenous accessions from northern Bastar of Chhattisgarh
Author(s): Jeevan Lal Nag, Ajay Tiwari and Prabhakar Singh
Abstract: The field experiment was conducted at Research cum Instructional Farm, College of Agriculture and Research Station, Singarbhat, Kanker, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.) during Kharif 2013-14. The experiment was laid out in Randomized Block Complete Design with four replication, in-situ sixty genotypes of about 10 year age were selected for investigation, which were found as wild seedling plants on forest land and rice bunds in Kanker District-(C.G.). The treatments comprised of sixty genotypes for with different qualitative character viz total soluble solid, total sugar, reducing sugar, non-reducing sugar, titration acetic acid, keeping days, pulp ratio, pulp seed ratio, peel percentage and fruit yield per plant. The D2 analysis classifies the genotypes into relatively homogeneous groups in such a way that within cluster diversity is minimized and between clusters diversity is maximized. The respective genotypes from diverse clusters can be utilized in breeding programme. Cluster analysis for qualitative traits showed that all genotypes were grouped into 8 clusters using non-hierarchical Euclidean cluster analysis (Table 4.15 and Fig. 4.5). For qualitative parameter, maximum number of genotypes were grouped into cluster VIII (14) followed by cluster III (12). Intra and Inter-Cluster distances among 8 clusters for qualitative traits in custard apple are presented in Table 4.16. The highest intra-cluster distance was recorded for cluster VI (48.65) followed by cluster II (46.79) and the smallest intra cluster distance was recorded in cluster III (0.00) followed by cluster V (8.15) for qualitative traits. Custard apple is a predominantly cross-pollinated (protogyny) crop and no information is available suggesting a change in its breeding behavior under varied environmental conditions. Discrimination of desirable parents for a successful hybridization programme is a difficult task for a plant breeder. Generally, geographical diversity has been considered as a measure of genetic diversity. However, this is an inferential criterion and it may not be so effective in quantifying or differentiating among populations.
DOI: 10.22271/chemi.2020.v8.i1au.12034
Pages: 3119-3123 | 331 Views 115 Downloads
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How to cite this article:
Jeevan Lal Nag, Ajay Tiwari, Prabhakar Singh. Genetic divergence for qualitative traits of fruit yield and its components in custard apple (Annona squamosa L.). Indigenous accessions from northern Bastar of Chhattisgarh. Int J Chem Stud 2020;8(1):3119-3123. DOI: 10.22271/chemi.2020.v8.i1au.12034
