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.)
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Creator |
S.Neelima
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Contributor |
K.G.Parameshwarappa
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Subject |
Genetic Plant Breeding
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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. |
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Date |
2016-07-22T15:06:10Z
2016-07-22T15:06:10Z 2007 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/69371
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Format |
application/pdf
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Publisher |
UAS Dharwad
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