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利用杂种优势是本世纪育种工作的突出成就之一。六十年代以来,我国在玉米、高粱、水稻和蔬菜等作物上先后推广应用杂交种,显著提高了这些作物的生产水平。从而加深了人们对杂种的认识,也带动了其他作物杂种优势利用的研究。油菜杂种优势强,种子繁殖系数高,用种量小,成本低,易于推广。油菜杂种优势利用的研究,当前的主要途径有:雄性不育三系法、雄性不育两用系及自交不亲和系等。雄性不育三系法难度较大,但种子生产却易解决。在甘兰型油菜雄性不育系
The use of heterosis is one of the outstanding achievements of this century breeding. Since the 1960s, China has promoted the use of hybrids on crops such as corn, sorghum, rice and vegetables, significantly increasing the level of production of these crops. Thus deepening people’s understanding of hybrids, but also led to the utilization of heterosis in other crops. Rape hybrid superiority, high seed multiplication coefficient, with a small amount of seed, low cost, easy to promote. The utilization of rapeseed heterosis, the current main ways are: three lines of male sterile, male sterile and self-incompatible lines and so on. Male sterility three-line method is more difficult, but the seed production is easy to solve. Male Sterile Line in Brassica