摘要
山茱萸成熟雌蕊的柱头为干型,具表皮起源的单细胞乳突。在开花后授粉前乳突细胞的顶部发生凹陷,授粉后乳突细胞迅速萎缩。花柱在发育初期为开放型,发育后期花柱道消失,成为一种具特殊结构的闭合型。成熟花柱由表皮、皮层和特殊的引导组织等部分构成,在皮层中贯穿有3条维管束,引导组织的中央则有二列类似腺质的内表皮细胞,该细胞富含蛋白质、核酸和多糖类物质。
The histological and histochemical changes during the development of the stigma and style have been investigated in Comus officinalis, using light and electron microscopy. The mature stigma is of the dry type with the unicellular papillae that originate from the epidermis. Before the stigma accept pollen grains, the top of the papillose cells sunk in The papillose cells wither immediately after the pollen grains touch with them. During the development of the style, at first, it has a stylar canal, i. e. the open type style, but later the stylar canal disappear and it becomes a special solid style. The mature style is composed of the epidermis, the cortex in which there are three vascular bundles, and the special transmitting tissue has two rows of glandular inner epidermis that stains intensely for total proteins, RNA, DNA and polysaccharides.
出处
《武汉植物学研究》
CSCD
1991年第3期219-223,共5页
Journal of Wuhan Botanical Research
基金
国家自然科学基金
关键词
山茱萸
柱头
花柱
Cornus officinalis
Stigma
Style
