‘厚瓣金桂’桂花花芽形态分化的研究

园艺学报 ›› 2002, Vol. 29 ›› Issue (1): 52-56.

‘厚瓣金桂’桂花花芽形态分化的研究

王彩云¹;高莉萍¹;鲁涤非¹;黄燕文²

(¹ 华中农业大学林学系, 武汉430070 ;²华中农业大学理学院, 武汉430070)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-02-25 发布日期:2002-02-25

A Study on Morphological Differentiation of Flower Bud of Osmanthus fragrans‘Houban Jingui’

Wang Caiyun¹ , Gao Liping¹ , Lu Difei¹ , and Huang Yanwen²

(¹ Department of Forestry , Huazhong Agricultural University , Wuhan 30070;　² Department of Science , Huazhong Agricultural University, Wuhan 430070)

Received:1900-01-01 Revised:1900-01-01 Online:2002-02-25 Published:2002-02-25

摘要/Abstract

摘要： 采用石蜡切片法观察了‘厚瓣金桂’桂花(Osmanthus fragrans‘Houban Jingui’) 花芽形态分化过程。研究表明: 厚瓣金桂花芽分化从4 月中旬开始分化苞片原基至8 月底心皮原基形成历时约4 个月,其过程可分为苞片分化期、花序原基分化期、花蕾原基分化期、顶花花萼分化期、花瓣分化期、雄蕊分化期和雌蕊分化期7 个时期。其中, 苞片分化期和雄蕊分化期历时长, 分化较慢, 其它时期历时短, 分化较快。聚伞花序的中间顶花先分化, 需时长, 侧花后分化, 需时短, 因此各小花几乎同时完成花芽分化进程。

关键词: 桂花, 花芽, 形态分化

Abstract: The paraffin cut method was used to observe the developing process of the flower bud differentiation of Osmanthus f ragrans‘Houban Jingui’. The results showed that the flower bud differentiation process lasted for about 4 months from bract primordia differentiation in mid April to carpel primordia formation in late August . The process could be divided into 7 phases : bract differentiation phase , inflorescence primordium differentiation phase, single flower primordia differentiation phase, sepal differentiation phase of top flower , petal differentiation phase, stamen differentiation phase and pistil differentiation phase. The phase of bract differentiation and stamen differentiation were relatively long, The top flower of the nflorescence differentiated earlier and slower than the lateral flowers , and all the top and lateral flowers finished differentiation almost at the same time.

Key words: Osmanthus f ragrans, Flower bud, Morphological differentiation

中图分类号:

S 68

王彩云;高莉萍;鲁涤非;黄燕文. ‘厚瓣金桂’桂花花芽形态分化的研究[J]. 园艺学报, 2002, 29(1): 52-56.

Wang Caiyun;Gao Liping;Lu Difei;and Huang Yanwen. A Study on Morphological Differentiation of Flower Bud of Osmanthus fragrans‘Houban Jingui’[J]. ACTA HORTICULTURAE SINICA, 2002, 29(1): 52-56.

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