| 黄连属(毛茛科)花的形态发生 |
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| 引用本文： | 辜天琪,任毅. 黄连属(毛茛科)花的形态发生[J]. 植物学报, 2007, 24(1): 80-86 |
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| 作者姓名： | 辜天琪 任毅 |
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| 作者单位： | 1 陕西师范大学生命科学学院, 教育部药用植物资源与天然药物化学重点实验室, 西安 710062; 2 陕西理工学院, 汉中 723001 |
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| 摘 要： | 本文运用扫锚电子显微镜(SEM)观察了黄连属(Coptis)植物花的形态发生和发育过程, 结果表明, 该属植物所有的花部器官均为螺旋状发生, 雄蕊为向心式发育, 花瓣原基有微弱的延迟发育, 心皮原基为对折型(即马蹄形), 子房为半封闭类型, 子房柄是在发育过程中形成的。通过与其它具T-型染色体类群在花形态发生上的比较, 认为黄连属表现出了某些原始的性状, 这一结果与分子系统学研究认为黄连属为毛茛科的基部类群的结论一致。
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| 关 键 词： | 黄连属 毛茛科 花 形态发生 |
| 收稿时间： | 2006-09-04 |
| 修稿时间： | 2006-11-14 |
Floral Morphogenesis of Coptis (Ranunculaceae) |
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| Tianqi Gu,Yi Ren. Floral Morphogenesis of Coptis (Ranunculaceae)[J]. Bulletin of Botany, 2007, 24(1): 80-86 |
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| Authors: | Tianqi Gu Yi Ren |
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| Affiliation: | 1College of Life Sciences, Shaanxi Normal University, Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Xi’an 710062, China;2Shaanxi University of Technology, Hanzhong 723001, China |
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| Abstract: | The floral morphogenesis of Coptis was observed under scanning electron microscopy (SEM). The initiation of all floral organs of the genus is spiral, the petal primordia are slightly retarded, the developmental sequence of the stamens is centripetal,the carpel primordia are conduplicate (i.e., horse-shoe shaped), the ovaries are half closed and the ovary stalk is formed in the developmental process. In comparing the floral morphogenesis with that of other genera with T-type chromosomes in the family, we considered that Coptis contains some primitive characters. The results are consistent with molecular systematic studies showing Coptis as one of the basal groups of Ranunculaceae. |
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| Keywords: | ; |
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