三种方法对结球白菜种子精选效果比较

Comparison of Three Upgrading Methods for Chinese Cabbage Seeds

摘要: 结球白菜种子分别进行坡选、筛选和色选，对精选后不同类别的种子进行重量测定、发芽试验、幼苗特性分析和抗老化处理。试验结果表明，不同类别的种子在千粒重、发芽特性、幼苗特性和抗老化能力方面存在明显差异。通过坡选加筛选的方法，去除种子批中25.1%的种子，可以提高剩余活力种子和萌发整齐度。

Abstract: Seeds of Chinese cabbage (Brassica rapa ssp. Pekinensis) are upgraded by gravity deck and/or sieve or color separator. The weight, germination, seedling performance and sensitivity to accel-erated deterioration of seeds from all fractions after upgrading are tested. The obvious difference among different fractions could be found. The seed vigor and germination uniformity can be enhanced after upgrading by gravity deck and sieve, while 25.1% seeds with lower vigor are removed from the seedlot.