杂交水稻种子纯度鉴定与分析

The Result of Purity Identification of Hybnid Rice Seeds and Its Analysis

１９９４～１９９５年，共抽取１２４个杂交水稻样本，进行田间种植鉴定，结果１９９５年样本的平均纯度比１９９４年下降３％以上。本文对纯度下降的原因进行了分析，提出要严格繁殖，隔离制种区，认真去杂和加强亲本提纯。

samples were identified in field during 1994 and 1995.The result showed that the avenage purity was less 3 percent in 1995 than in 1994.The reason of purity decline was analysed,and pointed-out the measures for improving hybrid rice purity.