摘要
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 paper deals with branching character of hybrid rape. Two varieties of the compact conformation type (CCT) and the loose conformation type(LCT) as reciprocal crossing parents were made. The results showed that 9 agronomic characters of the hybrid F 1 have significant average superiority, and there are significant difference in efficient pods, grains of pod and 1000～seed wt. At the same time, the results also showed the main reason that causes the increase of branching pod number is the increase of length and amount for branching. The combination of reciprocal crosses have no difference in branching angle, and F 1 show average value of parents and tend to the CCT. These phenomena not only are helpful on heterosis breeding work of good CCT plants type, but also can provide theoretical basis for study and its utilization
出处
《中国农学通报》
CSCD
2000年第5期17-19,共3页
Chinese Agricultural Science Bulletin
