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国务院在《关于加快推进现代农作物种业发展的意见》中提出了商业育种的概念。商业育种需要理论、技术和种质资源的积累,然后才有改良和创新。商业育种者大多依靠系谱法选育二环系,从群体遗传学来说,二环选系就是在积累改良效应。长期大量的改良在育种群体中累积了GCA(一般配合
The State Council put forward the concept of commercial breeding in Opinions on Accelerating the Development of Modern Crop Seed Industry. Commercial breeding requires the accumulation of theory, technology and germplasm resources before improvement and innovation. Commercial breeders mostly rely on pedigree to select the second ring system. From the perspective of population genetics, the second ring system is accumulating ameliorative effects. Extensive long-term improvements have accumulated GCA in breeding populations (generally with