玉米双杂交种增产效果很大,但在大面积配种时需要花费大量劳力进行去雄,这是美中不足之处。现在有一种玉米,具有雄花不孕的特性,把这种特性采用回交的办法,转化到双杂交种中就可以免去一大部分或全部的去雄工作,同时还可获得高质量的杂交种子。目前某 Maize two-hybrid yield a great effect, but when large-scale breeding need to spend a lot of labor to the male, which is the fly in the ointment. There is now a corn that has the characteristics of a male flower infertility. By using the backcrossing method to transform this property into two-hybrids, most or all of the male-to-male work can be avoided and high-quality hybridization can be obtained seed. A