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通过研究谷子两系杂种优势利用亲本配合力的遗传基础,为今后谷子杂交种亲本选配提供理论依据。以近年来新选育的30份谷子不育系和4份现主推杂交种恢复系为亲本材料,按照NCⅡ不完全双列杂交设计配置120(30×4)份杂交组合,对配合力及杂种优势等方面进行分析。结果显示谷子两系杂交组合主要农艺性状存在显著差异,不同材料同一性状和同一材料不同性状间的配合力差异较大。在34份材料中,S9、S12、S25、S27和R1在产量性状有着较高的一般配合力值,是较为理想的亲本。在杂交组合间存在着广泛的超亲优势和竞争优势,其中10个组合的折合产量增产显著。在组配谷子强优势组合时,不仅需选择较高GCA的双亲,较高SCA的选择也极为重要。
The genetic basis of the combining ability of parents was studied by studying the heterosis of millet and the theoretical basis for future parental matching of millet hybrids. In this study, 30 new millet millet lines selected in recent years and 4 restorer lines of current hybrids were used as parent materials. 120 (30 × 4) hybrid combinations were designed according to NCⅡ incomplete diallel crosses. Advantages and other aspects of analysis. The results showed that there were significant differences in the main agronomic traits of the two-line hybrid combinations of millet, and the differences of the combining ability between the same characters of different materials and different characters of the same material were large. Among 34 materials, S9, S12, S25, S27 and R1 had higher general combining ability in yield traits, which was the ideal parent. There is a wide range of super-pro-dominant and competitive advantages among the hybrid combinations, of which 10 combinations yield significant increase. When combining high-strength combinations of millet, not only do parents with higher GCA be selected, but selection with higher SCA is also extremely important.