Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810039017
Authors: PRASANNA N. S.
Advisor: Dr. SUMA C. MOGALI
Title: GENETIC DIVERSITY AND MARKER TRAIT ASSOCIATION STUDIES IN LINSEED (Linum usitatissimum L.)
Publisher: University of Agricultural Sciences Dharwad
Language: en
Type: Thesis
Pages: 126
Agrotags: null
Keywords: GENETIC DIVERSITY AND MARKER TRAIT ASSOCIATION STUDIES IN LINSEED (Linum usitatissimum L.)
Abstract: The present investigation was carried out to assess the genetic diversity for yield and quality attributes in linseed germplasm collection and further to identify the putative alleles associated with economically important traits such as high Alpha Linoleinic acid, seed yield per plant, oil content, seed weight and days to maturity. Field evaluation of genotypes during rabi 2012 showed significant difference and considerable variability for majority of traits. Highly significant difference among the genotypes was found for all the 15 characters. GCV and PCV were high for number of capsules per plant (46.02 and 46.08%), number of secondary branches per plant (30.71 and 30.83%), number of primary branches per plant (20.99 and 21.72%) and number of seeds per capsule (21.50 and 22.05%). ALA content in seeds exhibited significant positive correlation with seed yield per plant at phenotypic level. 170 genotypes were grouped into sixteen clusters. The intra cluster distance ranged from 20.18 in cluster I to 27.61 in cluster XV. The inter cluster distance was found to be the highest (65.80) between cluster XI and cluster XV. Fifty SSR primers used in this study produced 95.50 per cent polymorphism with PIC values ranging between 0.14 and 0.81. A total of 21 SSR alleles were found to be significantly associated with one or more morphological traits during association mapping. The association analysis approach used successfully to identify alleles linked to days to maturity, plant height, number of secondary branches, number of capsules per plant, 1000 seed weight, seed yield per plant, alpha linolenic acid content and Oil content. These markers could be validated and further used for marker assisted selection involving linseed germplasm for improvement of nutraceutical and agronomically important traits.
Subject: Biotechnology
Theme: GENETIC DIVERSITY AND MARKER TRAIT ASSOCIATION STUDIES IN LINSEED (Linum usitatissimum L.)
These Type: M.Sc
Issue Date: 2014-06
Appears in Collections:Thesis

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