英语语法分析

Many progenies were obtained by a Brassica oleracea-Sinapis alba monosomic alien addition line plant selfing.

将甘蓝-白芥单体异附加系自交，获得了其自交后代。

Selfing progeny of E. urophylla showed depression in general, but some other combinations showed self-advantage.

尾叶桉自交后代普遍存在衰退现象，但亦有个别组合表现出一定的自交优势。

Key findings are as follows: 1. Selfing had significant impacts on the main economic characters of Brassica napus l.

主要研究结果如下：1。自交对甘蓝型油菜主要经济性状有显著影响。