Vol. 9, Issue 1 (2021)
Genetic diversity studies in forage maize genotypes
Author(s): SD Rathod, GC Shinde and SD Shinde
Abstract: Fifty four genotypes of forage maize were evaluated at research farm of AICRP on Forage Crops and utilazation, M.P.K.V., Rahuri in a RBD design with two replications during the rabi, 2018-19. The observations were recorded on yield and yield contributing traits viz., days to 50% tasseling, days to silking, plant height (cm), number of leaves/tiller, number of internodes/tiller, leaf length (cm), leaf breadth (cm), L/S ratio, stem girth (cm), green forage yield (kg/plant), dry matter percentage and crude protein percentage. Based on genetic distance (D2 value) fifty four genotypes were grouped into seven clusters indicating wider genetic diversity in the germplasm collections of maize from different geographical origin. Out of seven clusters formed, Cluster I was the largest with 38 genotypes, followed by cluster VI with 7 genotypes, followed by cluster IV with 5 genotypes. Cluster II, III, V, and VII were monogenotypic. The clustering pattern indicated the absence of relationship between genetic diversity and geographical origin of genotypes. The maximum intra cluster distance was observed for cluster IV (D=7.71) followed by cluster I (D=7.19), followed by cluster VI (D=6.12). Whereas, the maximum inter cluster distance was observed between cluster IV and cluster VI (D=18.92) followed by cluster IV and cluster V (D=16.68), while lowest divergence was noticed between cluster II and VI (D=7.77). On basis of inter cluster distances, cluster mean and per se performance and divergence class observed in the present study, the genotypes viz., 52095, 52217, 52336, 52483, 52507, 52623 and African tall were distinct and diverse and could be classified as promising genotypes. These genotypes may be used in crossing programme to achieve desired segregants in forage maize.
DOI: 10.22271/chemi.2021.v9.i1ao.11672
Pages: 2918-2921 | 335 Views 65 Downloads
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How to cite this article:
SD Rathod, GC Shinde, SD Shinde. Genetic diversity studies in forage maize genotypes. Int J Chem Stud 2021;9(1):2918-2921. DOI: 10.22271/chemi.2021.v9.i1ao.11672
