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以5个芽黄品系和6个常规品种进行不完全双列杂交,测定30个组合在主要农艺性状上的杂种优势和配合力。试验结果表明,陆地棉芽黄品系和常规品种杂交,F1具有明显的杂种优势。比较各性状竞争优势的相对大小可知,子、皮棉产量的优势最大,分别达10.57%和10.78%,果枝数、果节数、铃数和早熟性次之,纤维品质性状的优势较小。其中10个组合F1皮棉产量的竞争优势率超过15%杂种棉审定的增产阈值,尤以(nv32×苏棉3号)、(v16v17×鲁棉11号)这两个组合最突出。不同组合杂种一代间的性状变异主要受基因型控制,16个性状同时具有显著或极显著的亲本一般配合力和组合特殊配合力差异,芽黄品系和常规品种间杂种优势的利用潜力较大。
Incomplete diallel cross was performed on 5 bud yellow lines and 6 conventional lines, and the heterosis and combining ability of 30 combinations on the main agronomic traits were determined. The results showed that the F1 hybrids had obvious heterosis in the hybrids of Upland cotton buds and conventional varieties. Comparing the relative size of each competitive advantage, we can see that the yield of lint and lint is the biggest, accounting for 10.57% and 10.78% respectively. The number of fruiting branches, the number of fruit nodes, bolls number and prematureness are the second, and the superiority of fiber quality traits Smaller. Among them, the competitive advantage rate of 10 combinations of lint yield exceeded the stimulation threshold of 15% hybrid cotton, especially in the combination of (nv32 × suimian 3) and (v16v17 × lumian 11). The variation of traits in hybrids of different combinations was mainly controlled by genotypes. The 16 traits also had significant or extremely significant differences in the general combining ability and combining ability of the special combinations, and the heterosis utilization potential between the budding and conventional varieties was greater.