植物生态学报 ›› 2007, Vol. 31 ›› Issue (1): 166-171.DOI: 10.17521/cjpe.2007.0020
收稿日期:
2005-10-09
接受日期:
2006-03-13
出版日期:
2007-01-30
发布日期:
2007-01-30
通讯作者:
张素兰
作者简介:
* E-mail: zxsu@mnu.edu.cn基金资助:
HU Jin-Yao1,2, ZHANG Su-Lan1,*(), SU Zhi-Xian1, LIAO Yong-Mei2
Received:
2005-10-09
Accepted:
2006-03-13
Online:
2007-01-30
Published:
2007-01-30
Contact:
ZHANG Su-Lan
摘要:
珙桐(Davidia involucrata)是中国特有的珍稀濒危植物。目前对珙桐的研究主要集中在珙桐的形态描述、地理分布和种群和群落生态以及引种繁殖等方面。对其传粉生物学等的研究未见报道。花色一直被认为是吸引传粉者的诱物之一。传粉生态学家多利用滤镜、摄像等技术或行为学的方法研究花色与传粉者间的关系。黄酮类是花内色素中最重要的一类物质,并且已经有了成熟的提取分离方法。但还没有人具体地对它的变化与传粉者的访花关系进行研究。该文测定了各个花期的珙桐花序苞片、雄蕊和叶中的总黄酮含量及其组分变化,并对各个时期传粉者的传粉频率进行了观察。结果表明,随着花的发育,苞片、雄蕊和叶中的总黄酮含量都在下降,在雌蕊期膜翅目昆虫访问率高,但没有鞘翅目昆虫。此时黄酮可能同时起到了吸引和防御传粉者的作用。有几个黄酮组分含量在总黄酮中的比率上升,另有几个下降,增加了花与背景叶的对比度,可能强化了吸引传粉者的能力。
胡进耀, 张素兰, 苏智先, 廖咏梅. 珙桐传粉诱物Ⅰ.花色. 植物生态学报, 2007, 31(1): 166-171. DOI: 10.17521/cjpe.2007.0020
HU Jin-Yao, ZHANG Su-Lan, SU Zhi-Xian, LIAO Yong-Mei. POLLINATOR ATTRACTION BY DAVIDIA INVOLUCRATA. Ⅰ. COLOR. Chinese Journal of Plant Ecology, 2007, 31(1): 166-171. DOI: 10.17521/cjpe.2007.0020
平方和 Sum of squares | 自由度 df | 均方 Mean square | F值 | 显著系数Sig. | |
---|---|---|---|---|---|
组间 Between groups | 0.002 | 6 | 0.000 | 51.619 | 0.000 |
表1 苞片总黄酮变化方差分析
Table 1 One-Way ANOVA for the change of general flavone in bracts
平方和 Sum of squares | 自由度 df | 均方 Mean square | F值 | 显著系数Sig. | |
---|---|---|---|---|---|
组间 Between groups | 0.002 | 6 | 0.000 | 51.619 | 0.000 |
平方和 Sum of squares | 自由度 df | 均方 Mean square | F值 | 显著系数Sig. | |
---|---|---|---|---|---|
组间 Between groups | 0.001 | 5 | 0.000 | 182.733 | 0.000 |
表2 雄蕊总黄酮变化方差分析
Table 2 One-Way ANOVA for the change of general flavone in stamens
平方和 Sum of squares | 自由度 df | 均方 Mean square | F值 | 显著系数Sig. | |
---|---|---|---|---|---|
组间 Between groups | 0.001 | 5 | 0.000 | 182.733 | 0.000 |
平方和 Sum of squares | 自由度 df | 均方 Mean square | F值 | 显著系数Sig. | |
---|---|---|---|---|---|
组间 Between groups | 0.001 | 6 | 0.000 | 26.671 | 0.000 |
表3 叶总黄酮变化方差分析
Table 3 One-Way ANOVA for the change of general flavone in stamens
平方和 Sum of squares | 自由度 df | 均方 Mean square | F值 | 显著系数Sig. | |
---|---|---|---|---|---|
组间 Between groups | 0.001 | 6 | 0.000 | 26.671 | 0.000 |
图4 不同发育时期雄蕊中各黄酮组分的变化 1~11分别为不同Rf值的黄酮成分,Rf值分别为0.911, 0.843, 0.743, 0.663, 0.519, 0.400, 0.358, 0.322, 0.234, 0.165, 0.083 1~11 denote various flavone, which Rf zalue is 0.911, 0.843, 0.743, 0.663, 0.519, 0.400, 0.358, 0.322, 0.234, 0.165 and 0.083 respectively.
Fig.4 Change of various flavone in stamens with date
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