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按照常规育种程序,一年一代,培育出一个新品种需要8—10年时间。时间长,效率低,不能适应生产发展对品种的要求。为了缩短育种年限,我们在昆明进行小麦夏繁加代以尽快育出新品种。1975年至1978年,我们共夏繁杂种一代586个组合;杂种二代10个组合;杂种三代与高代材料441个株系;不同类型品种224个(包括重复种植)。现将夏繁加代效果初步正理分析于下。
According to the conventional breeding program, it takes 8-10 years to breed a new breed from one generation to another. A long time, low efficiency, can not adapt to the requirements of the varieties of production and development. In order to shorten the breeding period, we carry out the summer wheat addition in Kunming to breed new varieties as soon as possible. From 1975 to 1978, we had a total of 586 combinations of summer hybrids; 10 hybrids of the second generation; 441 hybrids of the third generation and the high generation; 224 varieties of different types (including repeated planting). Now Xia Fan added the effect of the initial positive analysis in the next.