雄性不育的利用生产上应用的杂交种子,需要年年配制。象玉米这样的单性花作物,在制种过程中,只要把雄穗拔掉就可以了,虽然费工,但还是容易配制的。而高粱、水稻、小麦等两性花作物,若采用人工方法,将每朵小花逐一去雄来制种,就比较困难,因为每朵小花只能收到1粒种子,要获得大量杂交种子供生产之用,就难以办到了。 Male-sterile use of hybrid seeds for production applications needs to be formulated year after year. Flowers such as mallow unisexual flowers, in the seed production process, as long as the tassel unplug it, though labor, but still easy to formulate. If sorghum, rice and wheat are bisexual, it is more difficult to seed each floret one by one by hand, because each floret can only receive one seed and a large number of hybrid seeds are needed for production Use, it is difficult to do.