Estimation of combining ability and heterosis for seed yield and its attributing traits in Sunflower (Helianthus annuus L.)
Estimation of combining ability and heterosis for seed yield and its attributing traits in Sunflower (Helianthus annuus L.)
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Keywords:
Combining ability, Heterosis, Sunflower, Hybrids, GCA, SCAAbstract
Field experiment was conducted to estimate the combining ability and heterotic effects of sunflower hybrids. Twelve lines and six testers were crossed in Line × Tester mating design to generate 72 hybrids during Rabi/ summer 2021, which were further evaluated in Kharif 2022 along with checks at UAS, GKVK, Bengaluru. The cross-combination CMS 335 A × RHA 95 C10 exhibited better per se performance and standard heterosis for seed yield plant-1 and oil content. Further the lines (CMS 17, CMS 335, CMS 597) and the testers (RHA 95C-10, RHA 278) exhibiting desirable combining ability should be preferentially used in hybrid development and testing for commercial exploitation.
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References
KEMPTHORNE, O., 1957, an introduction to genetic statistics. John Wiley and Sons, New York.
SAPKALE, R. B., SHINDE, S. R. AND PAWAR, R. M., 2016, Heterosis studies in sunflower (Helianthus annuus L.). Int. J. Plant Sci., 11(1): 22-27. DOI: https://doi.org/10.15740/HAS/IJPS/11.1/22-27