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首页> 外文期刊>Journal of Oilseeds Research >Heterosis and combining ability for seed yield and other yield contributing characters in sunflower, Helianthus annuus L.
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Heterosis and combining ability for seed yield and other yield contributing characters in sunflower, Helianthus annuus L.

机译：向日葵（向日葵）的杂种优势和配合能力以及种子产量和其他产量贡献特征的研究。

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摘要

Four lines were crossed with 10 testers in a LxT mating design to estimate the heterosis and combining ability for yield and its component traits in sunflower (Helianthus annuus L). Among the 40 hybrids studied for heterosis six recorded positive significant heterosis, heterobeltiosis and standard heterosis over two checks (KBSH I and PAC 1091) for seed yield and oil content. The variance due to SCA was grater than GCA for all the traits except head diameter, which indicated preponderance of non-additive gene action for all the traits while additive gene action for head diameter. The parents DCMS 36, DRS 9, DRS 102 and RHA 340 can be considered as superior parents and the crosses DCMS 36 x DRS 16, CMS 7-1A x RHA 340, CMS 7-1A x DRS 9 were consideredas superior hybrids, as they observed high per se and significant gca and sea effects for seed yield/plant. These superior crosses involved parents with high x low, low x low and high x high gca effects, which in turn suggested the possible role of non-additive gene action in these crosses.
机译：在LxT交配设计中，将4个品系与10个测试仪杂交，以估计杂种优势和向日葵的产量及其组成性状的组合能力。在研究杂种优势的40个杂种中，有6种在种子产量和含油量方面经过两次检查（KBSH I和PAC 1091），表现出正显着的杂种优势，杂种优势和标准杂种优势。 SCA引起的变异除头部直径外在所有性状上均比GCA更好，这表明所有性状均以非加性基因作用为主，而头部直径则以加性基因作用为主。亲本DCMS 36，DRS 9，DRS 102和RHA 340可被视为上等亲，而杂种DCMS 36 x DRS 16，CMS 7-1A x RHA 340，CMS 7-1A x DRS 9被视为上等亲本在种子产量/植物方面观察到较高的本身和显着的gca和海洋效应。这些优良的杂交涉及具有高x低，低x低和高x高gca效应的父母，这反过来又暗示了非加性基因作用在这些杂交中的可能作用。

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