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Studies on Induced Mutations for Isolation of High Oil Content and Self Fertile Mutants in Sunflower (Helianthus annuus L.)

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Title Studies on Induced Mutations for Isolation of High Oil Content and Self Fertile Mutants in Sunflower (Helianthus annuus L.)
 
Creator Prakash Natikar
 
Contributor K. Madhusudan
 
Subject Genetics and Plant Breeding
 
Description The present investigation was aimed at elucidating information mainly on
the genetic variability for yield and yield components through induced
mutagenesis and to isolate self fertile mutants with high oil content. Morden and
DSF 15B variety of sunflower were treated with the mutagen EMS at 0.15 per
cent. There was increase in mean head diameter, seed yield, mean hull content in
the mutants of DSF 15B and increase in mean for plant height, stem diameter and
head diameter in case of mutants of Morden in M2 generation.
Analysis of variance revealed the prevalence of significant differences
among the genotypes for all the characters studied in M3 generation. Higher GCV
and PCV were obtained for seed yield and oil yield, and moderate for stem diameter,
head diameter, hundred seed weight and oil content in M 3 generation. Heritability in
broad sense and genetic advance over mean were high for plant height and 100 seed
weight. However, seed yield per plant and oil yield exhibited moderate heritability
and high genetic advance over mean in mutants of Morden and DSF 15B. Hence,
most of the characters are amenable for simple selection. Seed yield per plant had
significant positive association with plant height, stem diameter, head diameter,
hundred seed weight. Considerable amount of genetic diversity in the mutants of
Morden was observed, which is evident from D2 analysis, in which 34 mutants of
Morden formed 8 clusters. Among the 20 RAPD primers, four showed 100 per cent
polymorphism. Mutant 20-5-5 in case of Morden and mutant 23-4-7 in case of DSF
15B registered high self fertility, oil content, 100 seed weight, seed yield and low
hull content and can be used as genetic stocks.
 
Date 2016-11-14T13:08:57Z
2016-11-14T13:08:57Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/85400
 
Format application/pdf
 
Publisher UAS, Dharwad