木瓜的果实发育及其结构防御策略  

Development and Structure Defense Strategies on the Fruit of Chaenomeles speciosa

作　　者：彭华胜[1] 王德群[1] 胡正海[2] 

机构地区：[1]安徽中医学院药学院安徽省高校现代中药重点实验室,安徽合肥230031 [2]西北大学生命科学学院,陕西西安710069

出　　处：《中药材》2010年第3期325-328,共4页Journal of Chinese Medicinal Materials

基　　金：安徽省自然科学基金项目(070413126)

摘　　要：目的：探索木瓜的果实发育规律及其结构防御策略。方法：对不同发育时期的木瓜果实进行解剖观察,对果实中单宁进行组织化学定位。结果：木瓜果实的发育经历了2个阶段,开花至花后40-50 d为其细胞迅速分裂期,此后为细胞增大期。木瓜的果实由果托及果皮组成,其中果托从外向内依次为角质层、表皮细胞、单宁细胞层、含单宁的果托薄壁细胞、石细胞环带,它们对其内部的果皮及种子都有保护作用。近成熟果实中单宁主要分布在花托的薄壁细胞中,且由内向外含量增高,而果皮中含量甚低。结论：木瓜果实的发育及结构特点与其防御生物侵蚀有关。Objective：To study the development rule and structure defense strategies on the fruit of Chaenomeles speciosa.Methods：Anatomical and histochemical methods were used to investigate the structure and localization of tannin of the fruit of Chaenomeles speciosa.Results：The development of the fruit of Chaenomeles speciosa were divided into two periods：cells reproduced rapidly from florescence to 40~50 days after florescence,and cells augmented after this.The pericarp and seeds were protected by beceptacle which was formed by cuticle,epidermis,taniniferous cells layer,parenchyma cells which contained tannin and stone cells zones.Tanin was distributed in parenchyma cells of beceptacle mostly and in pericarp barely.Conclusion：The development and structure of fruit of were related with its defense strategies.

关 键 词：木瓜 果实 发育解剖 防御策略 

分 类 号：R282.2[医药卫生—中药学]