| 冷蒿的开花动态与花粉活力及柱头可授性研究 |
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| 引用本文： | 张雅荣,宛涛,蔡萍,伊卫东.冷蒿的开花动态与花粉活力及柱头可授性研究[J].中国草地学报,2012,34(1):108-112. |
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| 作者姓名： | 张雅荣 宛涛 蔡萍 伊卫东 |
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| 作者单位： | 1. 内蒙古农业大学生态环境学院,内蒙古呼和浩特,010019
2. 锡林浩特职业学院草原畜牧系,内蒙古锡林浩特,026000 |
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| 基金项目： | 内蒙古自然科学基金，锡林浩特职业学院科研基金 |
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| 摘 要： | 在试验地观察了冷蒿的开花动态,用TTC法测定了冷蒿花序花粉的活力,采用联苯胺—过氧化氢法测定了其柱头的可授性.结果表明,冷蒿花序的开花顺序是自上而下的,小花的开放是自外轮至中央小花.冷蒿的花粉活力在盛花期开花之初很低,第2～3d花粉活力较高,随后活力明显下降,但直至其花序枯萎,少量的花粉仍具有部分活力.花粉寿命较长,约为20d.冷蒿边缘雌花柱头的可授性在开花当天就具有,并且持续时间较长,在第2～3d可授性最强.中央两性小花柱头可授性要稍晚于边缘小花,但是在开花后第2～3d可授性也达到最高,其可授性时间也较长.柱头可授性的最佳时期为开花后第2～3d.冷蒿的最佳授粉期在开花后2～3d左右.
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| 关 键 词： | 开花动态 花粉活力 柱头可授性 冷蒿 |
Observation on the Flowering Dynamic, Pollen Viability and Stigma Receptivity in Artemisia frigida Willd. |
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| ZHANG Ya-rong
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WAN Tao
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CAI Ping
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YI Wei-dong.Observation on the Flowering Dynamic, Pollen Viability and Stigma Receptivity in Artemisia frigida Willd.[J].Chinese Journal of Grassland,2012,34(1):108-112. |
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| Authors: | ZHANG Ya-rong WAN Tao CAI Ping YI Wei-dong |
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| Institution: | 1(1.College of Ecology and Environmental Science,Inner Mongolia Agricultural University, Hohhot 010019,China;2.Department of Grassland Science,Xilinhaote Vocational College,Xilinhaote 026000,China) |
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| Abstract: | Flowering dynamic was observed in test field,pollen viability of Artemisia frigida Willd.was evaluated with TTC method,and stigma receptivity of Artemisia frigida Willd.was evaluated with benzidine-H2O2 method.The results showed that flowers in inflorescence of Artemisia frigida Willd.bloomed from up to down and outer florets bloomed before others,then middle florets bloomed later.The pollen viability of Artemisia frigida Willd.was lower at initial stage,higher on the 2nd or 3rd day after flowering,and then reduced evidently,but a few pollen viability still existed until inflorescence withered.The life-span of pollen was about 20 days.The stigma receptivity of outer female flowers appeared on the first flowering day,and lasted longer,the highest on the 2nd or 3rd day after flowering.The stigma receptivity of middle flowers appeared latter than the outer female flowers,but the stigma receptivity were highest on the 2nd or 3rd day after flowering and lasted longer.The best stage of stigma receptivity and pollination was on the 2nd or 3rd day after flowering. |
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| Keywords: | Flowering dynamic Pollen viability Stigma receptivity Artemisia frigida Willd |
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