Root developing trends and morphological characters in different growth stages were studied with japonica hybrid rice combination and its retainer and restorer and conventional varieties.
以粳型杂交稻及其亲本和常规品种为材料 ，在不同生育时期对其根系生长和形态特征进行比较研究。
The results of principal components analysis showed that color , characters of root and leaf are the decisive factors affecting radish germplasm classification according to morphological characters.
主成分分析表明，利用形态性状对萝卜分类时，首先考虑的是颜色，其次是根的性状，最后是叶的性状。
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