西域旌节花在不同环境下生长发育及某些生物学现象  

GROWTH, DEVELOPMENT AND SOME BIOLOGICAL PHENOMENA OF STACHYURUS HIMALAICUS UNDER DIFFERENT ENVIRONMENTAL CONDITIONS

作　　者：韦仲新[1] 杨增宏[1] 

机构地区：[1]中国科学院昆明植物研究所,昆明650204

出　　处：《应用与环境生物学报》2001年第4期315-320,共6页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金 (39870 0 88);云南省自然科学基金 (98C0 91M);中国科学院知识创新工程资助项目

摘　　要：观察和调查了西域旌节花Stachyurushimalaicus在不同环境下的生长发育和开花结果状况 ,并对某些生物学现象作初步探讨 .发现不同环境下的西域旌节花从腋芽的出现到枝叶的生长以及开花结果等在时间的先后和过程的长短上有所不同 .植株在秋冬季落叶与否很大程度上取决于植株本身的高矮和大小以及当地的荫蔽条件和水分状况等 .西域旌节花表面上为两性花 ,实质为假两性花 .对于某一具体植株来说 ,要么雌蕊能育 ,要么雄蕊能育 ,但不可能两者兼之 ,尽管每一棵植株都有雌蕊和雄蕊 .当雌蕊能育时 ,雄蕊却不育 (无花粉 ) ;当雄蕊能育 (有花粉 )时 ,雌蕊则不育 ,花开过之后整个花序脱落 .不同环境下植株结果的比例也不同 ,差异较大 .西域旌节花的落果情况非常严重 ,原因有待于进一步的观察和实验 .图版 1表 1参The growth, development and some biological phenomena of Stachyurus himalaicus under different environmental conditions were observed. It was found that the emergence of axillary buds, the growth and development, and even the flowering and fruiting of Stachyurus himalaicus varied under different environmental conditions. Whether the plant leaves falling or not in autumn greatly depended on the trees themselves, and also on the moisture and shade conditions of local environment. Their flowers are not really bisexual, but pseudo-bisexual. As for a given tree, either the stamen or the pistil is fertile, but not both, though the tree has both stamen and pistil. The proportion of fruit-bearing trees to fruitless trees varies remarkably under different environmental conditions.

关 键 词：西域旌节花 生长发育 环境条件 生物学现象 

分 类 号：Q949.759.408[生物学—植物学]