中国稻属植物叶片亚显微结构比较研究

用扫描电镜对原产中国的3种野生稻和2个栽培稻品种的叶片表面亚显微结构，尤其是气孔列数、气孔频度、气孔器乳突、大瘤状乳突、小栓细胞乳突等进行比较研究。结果显示，气孔频度的变化趋势是沿着疣粒野生稻-药用野生稻-栽培稻IR36-簿通野生稻-栽培稻珍汕97逐渐增大，其变化幅度在635-1737个／mm^2之间；气孔器乳突除疣粒野生稻为6个外，其余通常为4个；疣粒野生稻既无大瘤状乳突亦无木栓细胞乳突．药用野生稻无木栓细胞乳突。这些性状不仅具什种的特异性，而且与亲缘关系远近有关，可以作为稻属分类的依据。

Comparison of Leaf Ultrastructures of Oryza Plants in China

The uhrastructures ,especially stomatal arrays ,frequencies ,rumules ,large strumaes and cork-cell rumules of leaf epidermises of two wild rice species of Chinese origins and two rice varieties were comparatively studied with the scanning electron microscope. The results showed that the stomatal frequencies gradually increased along the line of Oryza meyeriana-IR36 belonging to O. sativa--O, rufipogon-Zhen- shan 97 belonging to O. sativa and their range stood within 635- 1 737 stomata/mm^2;All the four plants but O. meyeriana ,which had six stomatal rumules,generally had four stomatal rumules ;O. meyeriana had neither large strumaes nor cork-cell rumules,and O. officinalis had no cork-cell rumules. These traits are not only species-specific but also depend on genetic relations,so that they can be used in Oryza classification.