青钱柳雌、雄花芽分化进程的形态解剖特征观察

doi:10.3969/j.jssn.1000-2006.2011.06.004

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南京林业大学学报（自然科学版） ›› 2011, Vol. 35 ›› Issue (06): 17-22.doi: 10.3969/j.jssn.1000-2006.2011.06.004

青钱柳雌、雄花芽分化进程的形态解剖特征观察

洑香香，冯岚，尚旭岚，杨万霞，方升佐

南京林业大学森林资源与环境学院，江苏南京210037

出版日期:2011-11-28 发布日期:2011-11-28
基金资助:
收稿日期：2011-07-03修回日期：2011-10-17基金项目：国家林业局林业公益性行业科研专项项目（200904046）；江苏省"六大人才高峰"资助项目；江苏省高等学校创新团队科研计划〖ZK）〗作者简介：洑香香（1969—），副教授。Email: xxfu@njfu.edu.cn。

Observation of morphological and anatomical characters on staminate and pistillate flower differentiation in Cyclocarya paliurus

FU Xiangxiang,FENG Lan,SHANG Xulan,YANG Wanxia,FANG Shengzuo

College of Forest Resources and Environment,Nanjing Forestry University,Nanjing 210037, China

Online:2011-11-28 Published:2011-11-28

摘要/Abstract

摘要： 通过物候学观察结合石蜡切片技术，研究了青钱柳雌先型植株雌雄花芽分化过程中外部形态的变化和内部解剖结构的对应关系。研究表明：雄花发育可分为花药及花药壁的发育、小孢子发育和雄配子体发育3个阶段，与之对应的形态变化表现为花序伸长和小花膨大、苞片开裂至花药变黄色；雌花发育可分为雌蕊分化期、胚珠发育、大孢子发育及雌配子体发育，相应的形态变化表现为小花原始体出现和膨大、露出柱头、花柱伸长和变成深绿色。由此可见雌、雄花芽的外部形态指标变化可以直观反映出内部结构的变化，并可用来判断花芽分化的各个时期。另外，还探讨了影响青钱柳结实的可能原因是雌雄异熟性、结实母树群体大小及群体中雌先型植株和雄先型植株的比例。

Abstract: Relationship of external morphology and internal anatomical structure of pistillate and staminate during flower development in protogynous individual of Cyclocarya paliurus was studied by phonological observation and paraffin section. Results showed that period of staminate flower development was divided into three stages: anther and anther wall, microspore and androgamete, corresponding to morphological changes from anthotaxy elongating and the size of floweret increasing, involucres splitting to color of anther turning yellow. Pistillate flower developmental process included pistillate differentiation, development of ovule, megaspore and female gametophyte, and the change of external morphological characteristics during the above periods appeared as floweret initialbody appearing and growing, stigma exposing and elongating，and changing color of dark green. It indicated that external morphology of flower bud development apparently reflected the changes of internal structure, and could serve as indicator for stages of flower bud differentiation. Also, the factors including dichogamous character, the population size of fruiting plants, and the ratio of protandrous and protogynous plants in this population that may affect fruit in C. paliurus were discussed. 

中图分类号:

洑香香,冯岚,尚旭岚,等. 青钱柳雌、雄花芽分化进程的形态解剖特征观察[J]. 南京林业大学学报（自然科学版）, 2011, 35(06): 17-22.

FU Xiangxiang,FENG Lan,SHANG Xulan,YANG Wanxia,FANG Shengzuo. Observation of morphological and anatomical characters on staminate and pistillate flower differentiation in Cyclocarya paliurus[J].Journal of Nanjing Forestry University (Natural Science Edition), 2011, 35(06): 17-22.DOI: 10.3969/j.jssn.1000-2006.2011.06.004.

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青钱柳雌、雄花芽分化进程的形态解剖特征观察

Observation of morphological and anatomical characters on staminate and pistillate flower differentiation in Cyclocarya paliurus

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