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作 者 ：朱艳;徐增莱*;汪琼;王贞;史云云

期 刊 ：植物研究 2010年 30卷 (3)期 页码：267-272

关键词：盾叶薯蓣；倍性；叶表皮细胞；气孔器；

Keywords:Dioscorea zingiberensis C.H.Wright, ploidy, cell of leaf epidermis, stomata,

摘 要 ：通过对二倍体（2x=20）、三倍体(3x=30)、四倍体(4x=40) 盾叶薯蓣植株叶片上下表皮细胞密度、细胞形状系数，气孔器大小、气孔指数、气孔密度，以及气孔器保卫细胞叶绿体数与倍性相关性的比较，探讨多倍体在盾叶薯蓣倍性育种上的前景。结果表明：随着倍性增加，盾叶薯蓣表皮细胞密度、气孔器面积、长、宽、以及保卫细胞宽、保卫细胞叶绿体数均明显增大。气孔器面积和保卫细胞宽与倍性成正比，且差异显著，可以作为倍性鉴定的手段之一。

Abstract:To discuss the ploidy-breeding of multiploid Dioscorea zingiberensis C.H.Wright, the density of upper and lower epidermal cells, cellular figure coefficient, stomata size, stomata density, stomata index and stomata length/width were compared among diploid(2x=20), triploid(3x=30), tetraploid(4x=40) D.zingiberensis. The results indicated that positive correlation was showed between epidermal cells density, stomata area, length and width of stomata, width of guard cells, number of chloroplast in guard cells and ploidy. The significant positive correlation was showed between stomata area, width of guard cells and ploidy, so as one of the methods to identify ploidy of D.zingiberensis, the two can be used.

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