我省杂交高粱发展较快,1975年已占播种面积的46％左右。但在推广中还存在一些问题其中最主要的是繁殖不育系常发生大量事故,如不育系和保持系颠倒,有的入库丢了标记,有的两者成袋混堆而分不清,有的调入的不育系在田间开了花,损失颇大。为此,仅将我们几年来鉴别不育系和保持系种子的方法简单介绍如下:供大家参考。一、感观鉴定法大量成袋或成堆种子分不清不育系和保持系怎么办? 1.千粒重鉴别法。一般保持系种子成熟度好,千粒重较高不育系则相对较低。应随机 Hybrid sorghum in our province developed rapidly, accounting for 46% of sown area in 1975. However, there are still some problems in the promotion of which the most important is that there are a lot of accidents in breeding sterile lines, such as male sterile lines and maintainers in the upside down, some lost tags in the warehouses, Clear, some transferred into the field of male sterile lines blooming, a considerable loss. For this reason, only a few years to identify sterile lines and maintain the Department of the seed method is as follows: for your reference. First, the sensory identification method A large number of bags or piles of seeds can not distinguish between male sterile lines and how to do? 1 thousand weight identification method. Generally maintain the Department of seed maturity is good, high 1000-weight male sterile lines are relatively low. Should be random