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一、外表观察法1、观察饱满度杂交稻种子是由生活力较弱的不育系(母本)和恢复系(父本)杂交而成,加之多种因素的影响,种子的饱满度不如常规稻种子,即饱满度较差。2、观察谷尖一般杂交稻种子的谷尖呈紫色,而常规稻种子谷尖无色。3、观察外稃痕迹一般杂交稻种子外稃和内稃交界处有一个小黑圆点,常规稻种则无黑点。4、观察柱头痕迹一般杂交稻种子柱头外露,常规稻种子柱头不外露。5、观察稃壳颜色杂交稻
First, the appearance of observation 1, observe the fullness Hybrid rice seeds from less viable male sterile line (restorer line) and restorer (paternal) hybrids, combined with a variety of factors, the fullness of the seed is not as good as Conventional rice seeds, that is fullness is poor. 2, observe the tip of the tip of the hybrid rice seed valley tip purple, while the conventional rice seed tip sharp. 3, observation of nephew marks General hybrid rice seed nephew and nephew at the junction of a small black dots, conventional rice species without black spots. 4, observed head stigma General hybrid rice stigma exposed, conventional rice stigma is not exposed. 5, observe the shell color hybrid rice