HYBRIDS SELECTION OF SUNFLOWER BASED ON ECONOMIC HETEROSISA. Mandal, S.S. Lakshman and S. MukherjeeAbstract The present study on Sunflower (Helianthus annuus L.) was carried out with 33 sunflower hybrids at AICRP Sunflower, Nimpith centre, along with the Bidhan Chandra Krishi Viswa-vidyalaya, Nadia, West Bengal in two subsequent years, 2020-21 & 2021-22 for selecting high-yielding sunflower hybrids on the basis of yield related traits and economic heterosis analysis. The present attempt has been made in the estimation of economic/standard heterosis for oil content (%), seed and oil yield traits in sunflower. In the present study, the highest oil content (%) was recorded by the sunflower hybrid, P-89-1A x EC-601745(43%) and P-89-1A x TSG-303 (42.7%) followed by CMS-38A x TSG-289 (41.2%), P-89-1A x R-1-1(40.4%) and P-89-1A x R-297 and CMS-38A x R-297(40.1%) respectively as compared to the check LSFH-171(32.4%). From the study of economic heterosis, the higher seed yield was found in only one sunflower hybrid, CMS-103A x R-6D-1 and the higher oil yield (kg/ha) was recorded in the sunflower hybrids, CMS-38A x R-297 followed by CMS-103A x R-6D-1, P-89-1A x R-1-1, CMS-302A x R-297, CMS-38A x TSG-289 and CMS-38A x EC-603021 respectively against National check hybrid, LSFH-171.The hybrids with the crosses of the six parents, viz. female CMS-38A and CMS-P-89-1A and the male line R-297, EC-623021, TSG-289 and TSG-303 had significant positive hybrid vigour then the rest of the crosses for seed yield and some other yield components like head diameter, 100 seed weight and volume weight (g/100cc) and oil content(%) depicted that above said genotypes appeared to possess high concentration of non-additive genes for seed yield and component traits and, therefore, these parents can be considered as the good combiners for heterosis breeding programme for seed and oil yield improvement in Sunflower. |