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以分枝性状为研究对象 ,以紧凑型和松散型两类品种为杂交亲本进行正反交 ,试验结果表明 :紧凑型×松散型、松散型×紧凑型F1所考察的 9个农艺性状均表现出显著的平均优势和一定的超亲优势 ;超亲优势中分枝的有效角果数、角粒数、千粒重等产量因素差异显著 ;同时还发现分枝角果数的增加首先是分枝长度的增加 ,其次才是分枝数的增多。在分枝角度上组合正反交无差异 ,且F1表现双亲平均值并趋向紧凑型 ,这不仅有利于开展紧凑型优良株型的杂种优势育种 ,而且为其研究利用提供了理论依据。
The results showed that the nine agronomic traits investigated in compact × loose type and loose type × compact type F1 all showed reciprocal reciprocal crosses with the two types of compact and loose varieties as hybrid parents. Significant average superiority and certain super-superiority were observed. The number of effective pods, grains, and 1000-grain weight among the super-parents were significantly different. The increase in the number of branches in the superfamilies was also the first in the branch length Increase, followed by an increase in the number of branches. There was no difference between the reciprocal crosses in the combination of branching angles, and F1 showed the average value of both parents and tended to be compact. This not only was conducive to the development of compact and excellent plant type heterosis breeding, but also provided a theoretical basis for its utilization.