期刊论文

中文

广西植物

1000-3142

2008

28

4

427-430,450

10.3969/j.issn.1000-3142.2008.04.001

国家科技部科技成果推广项目（0ZEFN214300459） 湖南省“十五”重点科技攻关项目

本校为第一机构

对盾叶薯蓣四倍体和二倍体阴叶和阳叶表皮及气孔器的显微形态结构进行了比较。结果显示：叶片表皮细胞及气孔器的形态结构因染色体倍性及光照的不同而存在明显差异。表皮细胞有规则多边形与不规则细胞壁内褶2种类型;气孔器为典型的双子叶植物无规则型气孔器,仅分布在下表皮。四倍体表皮细胞密度、气孔器密度及气孔指数平均值分别为476.28±6.87个·mm^-2、78.22±3.1个·mm^-2、14.11,较二倍体的分别小4.60%、17.95%和11.98%。前者气孔器长、宽及保卫细胞宽度平均值分别为32.78±2.09μm、26.07±1.55μm、9.63±1.14μm,较后者的分别大10.73%、3.90%和18.01%,差异极显著。前者阴叶的较其阳叶的...

Morphology and microstructure of epidermis and stomatal apparatus in guard cell of sunny leaves and shady ones between diploid and tetraploid Dioscorea zingiberensis have been comparatively studied.The results are as follows：there are distinctly differences on their morphology and microstructure between diploid and tetraploid,sunny leaf and shady one.There are two morphological types of epidermal cells：regular polygon epidermis and irregular meander configuration ones.The stomatal apparatus,which exist only in under epidermis,is irregular typ...