银叶蓝钟花雌性花和两性花的开花动态研究
野外定位观测了云南特有植物银叶蓝钟花(Cyananthus argenteus)的开花进程、花朵的功能形态特征和开花动态。结果表明,银叶蓝钟花种群内既具有雌株,又具有两性株。银叶蓝钟花雌性花单朵花期19~20 d,开花过程可分为柱头球状期、柱头平展可授期、柱头反卷期、花瓣枯萎期、柱头凋谢期5个阶段;两性花单朵花期21~22 d,开花过程经历了散粉期、柱头伸长期、柱头开裂期、柱头可授期、花瓣枯萎期、柱头凋谢期6个阶段;2种花的柱头可授期互不重叠。由此可知,银叶蓝钟花的繁育系统主要为异交,需要传粉者活动才能完成授粉过程。银叶蓝钟花两性花中的雌、雄器官既在空间上分离,又在时间上分离,只能进行同株异花...
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Published in | 江西农业学报 Vol. 28; no. 4; pp. 19 - 22 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
国家观赏园艺工程技术研究中心/云南省农业科学院 花卉研究所/云南省花卉育种重点实验室/云南省花卉工程中心,云南 昆明,650205
2016
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Subjects | |
Online Access | Get full text |
ISSN | 1001-8581 |
Cover
Summary: | 野外定位观测了云南特有植物银叶蓝钟花(Cyananthus argenteus)的开花进程、花朵的功能形态特征和开花动态。结果表明,银叶蓝钟花种群内既具有雌株,又具有两性株。银叶蓝钟花雌性花单朵花期19~20 d,开花过程可分为柱头球状期、柱头平展可授期、柱头反卷期、花瓣枯萎期、柱头凋谢期5个阶段;两性花单朵花期21~22 d,开花过程经历了散粉期、柱头伸长期、柱头开裂期、柱头可授期、花瓣枯萎期、柱头凋谢期6个阶段;2种花的柱头可授期互不重叠。由此可知,银叶蓝钟花的繁育系统主要为异交,需要传粉者活动才能完成授粉过程。银叶蓝钟花两性花中的雌、雄器官既在空间上分离,又在时间上分离,只能进行同株异花间或异株、异花间传粉才能受精结实。 |
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Bibliography: | 36-1124/S LU Hong-chun;XIE Wei-jia ( National Engineering Research Center for Ornamental Horticulture/Flower Research Institute, Yunnan Academy of Agricul- tural Sciences/ Key Laboratory of Yunnan Flower Breeding/ Yunnan Flower Research and Development Center, Kunming 650205, China) Cyananthus argenteus; Female flower; Bisexual flower; Flowering dynamics The function and flowering characteristic and the flowering dynamics of Yunnan endemic plant Cyananthus argenteus was studied. The results showed Cyananthus argenteus existed either female or bisexual flowers. Flowering of individual female flower lasted 19 to 20 d,the flowering process for one female flower could be divided into 5 periods,including ball stigma period,stigma receptivity period,stigma curl period,petals wilt period and stigma wilt period. Flowering of individual bisexual flower lasted 21 to 22 d and the process of its flower could be divided into 6 periods,including pollen dehiscence period,style elongation period,stigma dehiscence period,stigma |
ISSN: | 1001-8581 |