摘要
荸荠同化茎起源于肉质主茎倒２或倒３叶的叶腋内。同化茎基部着生二鞘状叶，鞘状叶对早期同化茎穿出土面具保护作用。匍匐茎大多起源于同化茎基部鞘状叶的叶腋内。当植株开始抽生花茎时，地下匍匐茎顶端开始膨大。球茎的膨大是匍匐茎顶端５－６节的基本组织经细胞有丝分裂，增加细胞数目，然后由细胞体积的扩大来实现的。球茎具足够的营养物质供来年顶芽萌发的需要，故属水生植物冬芽的性质。
The photosynthetic stem of Eleorharis tuberosa originates from tbe axil of the inverted 2nd or3rd leaf of the main fleshy stem.Two sheath-like leaves mav be found at the base of photosyn-thetic stem which provide protection for the stem to emerge from ground at its early stage.Stolon of the plant develops mostly from the axil of sheath-like leaf of photosynthetic stem.Enlargement of the apex of underground stolon starts as the floral axis is to be shown.Mitotic celldivision of cells of the ground tissue at 5-6 internodes of stolon apex with increasing of the size ofdaughter cells cause formation of corm at its apex. Sufficient amount of nutritive material is storedin the corm for germination of its apical btid the next year.Therefore,corm of E. tuberosa is pos-sessed of the nature of winter bud of aquatic plants.
出处
《西北植物学报》
CAS
CSCD
北大核心
1995年第6期1-5,共5页
Acta Botanica Boreali-Occidentalia Sinica
基金
江苏省教委自然科学基金资助
关键词
荸荠
营养器官
发育
解剖学
Elecharis tuberosa Roen2 et Schult.vegetative organ,generation,anatomy
