黄金树花器官发生及发育的形态解剖学研究

园艺学报 ›› 2009, Vol. 36 ›› Issue (2): 285-290.

黄金树花器官发生及发育的形态解剖学研究

陈旭辉;江莎*;古松*;许珂;王永周;丁锐;黄俊哲

（南开大学生命科学学院，天津 300071）

收稿日期:2008-08-12 修回日期:2009-02-09 出版日期:2009-02-25 发布日期:2009-02-25
通讯作者: 江莎;古松

Morphological and Anatomical Studies of Floral Organogenesis and Development in Catalpa speciosa

CHEN Xu-hui, JIANG Sha*, GU Song*, XU Ke, WANG Yong-zhou, DING Rui, and HUANG Jun-zhe

(College of Life Science, Nankai University, Tianjin 300071, China)

Received:2008-08-12 Revised:2009-02-09 Online:2009-02-25 Published:2009-02-25
Contact: JIANG Sha;GU Song

摘要/Abstract

摘要： 利用普通光学显微镜和扫描电镜技术对黄金树花器官的发生及发育过程进行了观察。结果显示：（1）黄金树花器官的形态发生及发育过程集中于3月下旬～5月上旬进行，速度较快，历时较短。（2）花原基分化形成花的整个过程符合一般的分化顺序：花萼原基－花冠原基－雄蕊原基－雌蕊原基，且各原基在分化顺序上存在交叉。（3）花药及胚珠的发育与花器官的形态发生之间有明显的连续性，当花蕾直径为3.0 mm左右时花粉母细胞及完整的花粉囊壁形成，直径达到3.5 mm左右时胚珠中出现孢原细胞的分化，它直接起大孢子母细胞的功能。

关键词: 黄金树, 紫葳科, 花器官发生及发育, 形态解剖

Abstract: The initiation and development of flower organs in Catalpa speciosa (Warder) Warder ex Engelm were observed by light microscope and scanning electron microscope. The results showed that: (1) The whole process of floral initiation and development lasted about one month from late March to early May. (2) On the floral apex the different classes of organ primordia appeared in the following sequence: calyx, corolla, androecium and gynoecium, and they had overlapped with each other when occurring in turn. (3) The development of anther and ovule followed the finish of the flower organ initiation. Pollen mother cells and well developed microsporagium wall occurred when the diameter of the bud reached about 3.0 mm, and the archesporial cell which played the role of megaspore mother cell formed in ovule when the diameter of the bud reached about 3.5 mm.

Key words: Catalpa speciosa (Warder) Warder ex Engelm, Bignoniaceae, floral organogenesis and development, morphology and anatomy

中图分类号:

S 687

陈旭辉;江莎;古松;许珂;王永周;丁锐;黄俊哲. 黄金树花器官发生及发育的形态解剖学研究[J]. 园艺学报, 2009, 36(2): 285-290.

CHEN Xu-hui;JIANG Sha;GU Song;XU Ke;WANG Yong-zhou;DING Rui;and HUANG Jun-zhe. Morphological and Anatomical Studies of Floral Organogenesis and Development in Catalpa speciosa[J]. ACTA HORTICULTURAE SINICA, 2009, 36(2): 285-290.