论文部分内容阅读
“辽白一号”大白菜近几年累计推广面积达50余万亩,收到较好的社会效益。但由于一些单位和个人自选自繁,许多自繁种子已失去原有特征特性,出现了生育期延长、包心不实、不整齐、抗病性减弱等退化现象。 为了保证新品种在生产上不断发挥作用,我们开始更新辽白一号。从1986年开始把辽白一号群体中具有不同标记性状的单株分别自交,1988年利用不同标记性状的姊妹系杂交采种。试种结果株型及包心方式和原群体一样,但
“Liao Bai” cabbage accumulated in recent years an area of more than 50 million mu, received better social benefits. However, since some units and individuals choose their own plots, many self-propagation seeds have lost their original characteristics and appear to have degenerative phenomena such as prolonged growth period, untrue, irregularity and weakened disease resistance. In order to ensure that the new varieties continue to play a role in production, we started to update Liao Bai I. Since 1986, the individuals with different marker traits in Liao Bai No. 1 were selfed, and in 1988, sires crossed with different marker traits. The results of the test plant type and ascites and the original group, but