Stability and combining ability analysis in sunflower (Helianthus annuus L.)
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Date
2023-06-26
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CCSHAU, Hisar
Abstract
The present investigation entitled “Stability and combining ability analysis in sunflower (Helianthus annuus L.)” was carried out to identify the stable genotypes for seed yield and yield contributing traits, to investigate the combining ability of the parents and crosses and to evaluate the heterosis for seed yield and its attributes. The experimental material comprised of 90 genotypes including 72 hybrids developed from line x tester mating design by involving eight CMS lines and nine restorers with local check HFSH 848 was evaluated in four environments at Oilseed Research Area, Department of Genetics & Plant Breeding, College of Agriculture, CCS Haryana Agricultural University, Hisar during Spring 2018 Spring 2019 in timely and late conditions. The observations were recorded on following eleven characters: day to 50% flowering, day to maturity, plant height (cm), stem girth (cm), head diameter (cm), 100-seed weight (g), seed volume (g/100ml), seed yield per plant (g), hull content (%), oil content (%), protein content (%)in all environments. Based on the comparative studies of the Eberhart and Russell (1966) stability parameters, parents and crosses: CMS 103A, CMS 2A EC601879, EC601963, Morden (a)A, RHA 856 , CMS 103A x EC601879, CMS 300A x EC601879 were identified as promising genotypes because these exhibited high mean value, stable performance and average responsive to all environments and also stable performance for some particular characters. The lines and tester: CMS 103A, CMS 2A, CMS 44A, RHA 4-2, EC 601879, RHA 297 were found as good combiner for seed yield. The hybrids CMS 1A x EC601963, CMS 1A x EC601879, CMS 300A x RHA 4-2, CMS 300A x EC601879, CMS 44A x RHA 4-2 , CMSH 91A x RHA 4-2, CMSH 91A x EC601879 were found to highly significant positive heterosis over standard check for seed yield and yield contributing traits.