摘要
附子是附生于北乌头(Aconitum kusnezoffii Feichb)植株地下部分的一种特殊结构。当年的附子是由上一年秋季成熟附子上的腋芽发育形成。在附子的发育过程中,其组织的细胞中淀粉含量变化较大。7～8月间,附子主根次生结构中的薄壁细胞积累的淀粉达到最高峰。9月时附子的茎端开始活动,在叶原基远轴面细胞内首先出现淀粉粒,其肋状分生组织细胞,也积累较多的淀粉。此时附子主根中的淀粉含量则急剧下降,及到次年春季,当附子抽出地面时,根中的淀粉完全消失。在附子的整个发育过程中,主根周围没有形成周皮,而皮层细胞木质化做为保护组织。
Monkshood-tuber is a kind of particular structure, which attaches to the underground stem of the plant. Usually the monkshood-tuber initiates from the axillery bud of the matured monkshood-tuber in the previous autumn. During its development, the starch granules in the tissues underwent great changes. The amount of the starch granules in the parenchyma of the secondary structure, which is the main storage tissue of the main root of the monkshood-tuber. It reaches its highest in July and August. In September, during the development of the shoot of the monkshood-tuber, starch granules could be observed first in the adaxial part of the leaf primordia, and considerable amount of starch granules are also accumulated in the rib meristem below it. Meanwhile, the amount of starch granules in the main root of monkshood-tuber begins to degradate rapidy. And in the following spring, the starch granules disappears completely before the monkshood-tuber sprouts out of ground. Through the whole life of the monkshood-tuber, the main root does not produce the cork layer. The corky cortex cells eventually become the protective tissue.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
1992年第2期203-208,T001,T002,共8页
Journal of Northwest University（Natural Science Edition）
关键词
北乌头
附子
淀粉粒
中药材
毛莨科
Acontitum kusnezoffii
Monkshood-tuber
Starch granules.
