芡实种子萌发期的生物学特性与结构解剖

本文描述了芡实种子的结构,种子的萌发和幼苗的形态特征。成熟种子必须置于水中保存,以增大胚体,并完成后熟作用。外胚乳是种子萌发和幼苗生长的主要营养来源。萌发后在子叶叶柄基部外侧形成的突起结构可能起固着作用。

THE BIOLOGICAL CHARACTERISTICS AND ANATOMICAL STRUCTURE OF THE SEED OF EURYALE FEROX SALISB. IN THE STAGE OF GERMINATION

The structure of the seed of Euryale ferox Salisb., its germinatation and morphogenesis of the young seedling are described in this article. Mature seeds have to be preserved in water for further enlargement of the embryo and hastening its after-ripening processes. The perisperm of the seed is the main structure for storing nutritive materials. Four or several protuberances may be found at the basal portion of abaxial sides of the petioles of cotyledons during seed germination which are believable for anchoring the young seedling to the bottom of water in its early development.