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Studies on combining ability, heterosis and character association in sunflower (Helianthus annuus L.)

KrishiKosh

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Title Studies on combining ability, heterosis and character association in sunflower (Helianthus annuus L.)
 
Creator Kaushal Kumar
 
Contributor Sangwan, R.S.
 
Subject Crossing over, Sowing, Yields, Biological phenomena, Developmental stages, Planting, Heterosis, Environment, Genetics, Genotypes
 
Description Seventy-seven genotypes comprising 16 parents (6 females and 10 males),
their 60 F1 hybrids and one check HSFH-848 were grown in randomized block design
with three replications to study the combining ability, heterosis and character
association in sunflower. The analysis of variance indicated the presence of sufficient
genetic variability for eleven character studied. Among female parents, CMS 234A and
CMS 338A and among male parents, RHA 274, RHA 271 and RHA 298-118 showed
high gca effects for seed yield and some of the yield attributing traits. The cross CMS
234 x RHA 298-118 showed high per se performance high sca effects and high
heterosis for seed yield. The estimates of correlation coefficient indicated the positive
association between days to 50% flowering and days to maturity and negative
association between oleic acid and linoleic acid. Seed yield was highly and positively
associated with number of seeds per plant, head diameter, plant height, 100-seed
weight and stem girth and negatively associated with oil content.
 
Date 2017-01-20T09:18:32Z
2017-01-20T09:18:32Z
2005
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/97225
 
Language en
 
Format application/pdf
 
Publisher CCSHAU