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Genetic analysis and stability performance of single and three way crosses for yield and yield components in sunflower (Helianthus annuus L.)

KrishiKosh

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Title Genetic analysis and stability performance of single and three way crosses for yield and yield components in sunflower (Helianthus annuus L.)
 
Creator S.Neelima
 
Contributor K.G.Parameshwarappa
 
Subject Genetic Plant Breeding
 
Description Evaluation of 30 single cross hybrids using L x T analysis during kharif 2006, at
UAS, Dharwad revealed that three single cross hybrids CMS 17 A x RHA-6D-1, DCMS 51
A x R-298 and DCMS 51 A x RHA-272 showed significant standard heterosis over the
check hybrid KBSH-44 for seed yield. However, no hybrid gave significant heterosis for oil
content over KBSH-1. The SCA variance was predominant for head diameter, 100 seed
weight, hull content, oil content and seed yield per plant indicating the role of non-additive
gene action in their inheritance. The lines CMS 17 A and DCMS 51 A were good general
combiners for most of the traits, except oil content in case of CMS 17A. The restorer R-298
was a good general combiner for seed yield, while RHA-6D-1 for oil content.
Stability analysis of single and three-way cross hybrids carried out at three locations
revealed that three-way crosses were comparable in their performance to single crosses
hybrids for seed yield, head diameter, 100 seed weight and oil content. However, two threeway
hybrids CMS 234 A x DSI-2 x RHA-6D-1 and DCMS 51 A x DSI-1017 x RHA-6D-1
had high mean seed yield besides well adaptability. The genotypes x environmental
interactions were noticed for days to 50 per cent flowering, plant height, head diameter, 100
seed weight, number of filled seeds, volume weight, hull content, oil content and seed yield
per plant. The resistant reaction of two single cross hybrids CMS 17 A x RHA-6D-1 and
CMS 17 A x RHA-271 and a three-way cross CMS 103 A x DSI-2 x R-64 to Alternaria
disease noticed when at least one of the parents in the cross combination had moderate
resistant reaction. The parents which recorded moderate resistance were CMS 17 A, CMS
103 A and DCMS 51 A.
 
Date 2016-07-22T15:06:10Z
2016-07-22T15:06:10Z
2007
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69371
 
Format application/pdf
 
Publisher UAS Dharwad