DEVELOPMENT AND EVALUATION OF INBRED LINES AND HYBRIDS FOR OIL YIELD AND QUALITY IN SUNFLOWER (Helianthus annuus L.)
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Date
2020-10-21
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University of Agricultural Sciences, Bangalore
Abstract
F1 hybrids are the major cultivar types used for commercial sunflower production. Use of genetically diverse parents is the key for development of broad based hybrids. Such hybrids contribute to sustainable sunflower production. Under these premises, an
investigation was carried out to (i) identify high oil yield and oleic acid heterotic hybrids developed using existing inbred lines (ii) to develop and assess GCA of existing inbred lines for oleic acid and develop new inbred lines with high oleic acid content. A total of
50 hybrids, involving the existing 5 lines and 10 testers, along with parents and checks (KBSH-41, KBSH-44, KBSH-53 and RFSH-1) were evaluated during Kharif 2012 at Zonal Agricultural Research Station (ZARS), University of Agricultural Sciences,Bangalore. Three cross combinations, CMS 54A × RHA 23, CMS 54A × RHA-87and CMS 135A × RHA 23 were identified as desirable hybrids for seed yield plant-1, volume weight, 100 seed weight, oil content, oil yield and oleic acid content. Among the 50 hybrids, the best 15 hybrids were evaluated for stability across three seasons (kharif, rabiand summer). Four of these 15 hybrids, viz., CMS 58A × CSFI 5387, CMS 103A × RCR39, CMS 59A × CSFI 5387 and CMS 135A × RHA 23 were found stable across three seasons for all the characters. Three lines, CMS 103B, CMS 135B, CMS 58B and two testers CSFI 5387 and DRSF 106 were identified as high overall general combiners. A total of 412 and 423 plants were selected from B × B and R × R gene pools, respectively based on the allele specific SSR markers. The best ten of these lines were derived from two B × B gene pools (CMS 103B × CMS 135B, CMS 54B × CMS 103B) and three R × R gene pools (CSFI 5387× RCR 39, RCR 39 × RHA 87 and RCR 39 × CSFI 5387)