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广泛利用杂种优势是二十世纪在育种工作中的突出成就之一。杂交种的增产效果,已为各国生产实践所证实,由于保证了高产,各种作物杂交种的播种面积便日益扩大。甜菜与其他作物一样也广泛利用杂种优势,尤其近来多倍体甜菜被人们大量利用,相对引来的问题是在多倍体制种上如何能获得最大的杂交率,便于多倍体甜菜充分发挥杂种优势的效果。为此,雄性不育的特性,可
The widespread use of heterosis is one of the outstanding achievements of breeding in the 20th century. The yield increase of hybrids has been confirmed by the production practices in various countries. Due to the high yield, the sown area of hybrids of various crops will continue to expand. Beet, like other crops, also makes extensive use of heterosis. In particular, polyploid beet has been widely used by people recently. The relative problem is how to obtain the maximum hybridization rate in polyploidy so that polyploid beet can give full play to hybrid Advantage of the effect. To this end, the characteristics of male infertility may be