Thumbnail Image

Theses

Browse

20191
Reset filters
Subject: Genetics and Plant Breeding × Author: Pooja × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Genetic divergence analysis for morphological and biochemical traits in Desi cotton (Gossypium arboreum L.)
    (CCSHAU, 2019) Pooja; Pundir, S.R.
    The present investigation entitled “Genetic divergence analysis for morphological and biochemical traits in Desi cotton (Gossypium arboreum L.)” was carried out at the Research area of Cotton Section and Biochemistry Laboratory, Department of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar (Haryana, India) during Kharif 2017-18. The observations were recorded for different quantitative and biochemical characters to assess the genetic diversity in 60 Desi cotton genotypes. The GCV and PCV were observed high for seed cotton yield /plant, plant height (cm), number of bolls /plant, lint yield /plant (g), and protein content (%). High heritability was observed for almost all the characters studied except number of monopods /plant. The highest genetic advance as percent of mean was recorded for traits like lint yield /plant (g), seed cotton yield /plant and gossypol content (%). Hence, on the basis of highest value for component of variation and variability parameter direct selection for traits would be most effective. Seed cotton yield /plant had a positive and highly significant correlation with trait like number of monopods /plant, number of bolls /plant, boll weight (g), lint yield /plant (g), seed index and lint index at genotypic level indicated that there was strong inherent association between these traits. On the basis of cluster analysis sixty Desi cotton genotypes were grouped into seven clusters, indicated the presence of substantial genetic diversity in the evaluated germplasm lines/genotypes. In this context, the highest intra-cluster distance was observed in cluster V and lowest in cluster II. The maximum inter-cluster distance were showed between clusters II and IV, whereas, the minimum inter cluster distance was noticed between cluster III and VII, followed by clusters I and II. The genotypes of cluster III viz; FFS-1, Garovilli, H 476-5, HD 10, HD 3 and HD 20 were best performing. Based on study of morphological genetic diversity, the genotypes viz., BH 92, DC-93, HD 5278, FFS-9, BH 102, AC 33, HD 351, HD 372, BH 41, N-W-1, HD 392, G 20 and G 23 showed sufficient amount of genetic diversity for yield and its component traits which may be used in cotton breeding programmes for further improvement.