| 南瓜属种间杂交后代花粉活力研究 |
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| 引用本文： | 王雪芬,智海英,李永平,马海龙.南瓜属种间杂交后代花粉活力研究[J].天津农业科学,2012,18(5):100-102. |
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| 作者姓名： | 王雪芬 智海英 李永平 马海龙 |
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| 作者单位： | 1. 天津市宝坻区种植业发展服务中心,天津宝坻,301800
2. 山西省农业科学院园艺研究所,山西太原,030031 |
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| 基金项目： | 山西省科技攻关项目(2006031031-2);山西省农业科学院青年基金项目(YQN0508,YQN0606) |
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| 摘 要： | 采用TTC染色法对南瓜属种间杂交后代进行了花粉活力测定。结果表明,美洲南瓜×中国南瓜种间杂种F1花粉活力低于双亲;F2的花粉活力发生性状分离,部分单株的花粉活力比F1进一步降低、部分单株则有所提高;BC1F1中部分单株的花粉活力已恢复到了亲本水平。(印度南瓜×中国南瓜)×美洲南瓜种间杂种F1的花粉干瘪,活力为0。分析认为,南瓜属种间杂种F1花粉活力降低是导致其育性下降的因素之一,可从自交或回交后代中分离筛选出花粉活力有所恢复的单株,其中又以回交的方法效果更好。
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| 关 键 词： | 南瓜属 种间杂交 花粉活力 |
Study on Pollen Viability of Cucurbita Interspecific Hybrid Progenies |
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| WANG Xue-fen
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ZHI Hai-ying
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LI Yong-ping
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MA Hai-long.Study on Pollen Viability of Cucurbita Interspecific Hybrid Progenies[J].Tianjin Agricultural Sciences,2012,18(5):100-102. |
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| Authors: | WANG Xue-fen ZHI Hai-ying LI Yong-ping MA Hai-long |
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| Institution: | 1. Farming Development Service Center of Baodi District in Tianjin, Baodi Tianjin 301800, China; 2. Institute of Horticulture, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030031, China) |
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| Abstract: | The pollen viability of Cucurbita interspecific hybrid progenies was determined by TTC staining. The results showed the pollen viability of C. pepo×C. moschata hybrid F1 was lower than their parents; its traits of F2 separated with decreasing or improving than F1; some BC1F1 individuals recovered their parent level in pollen viability. The pollen of (C. maxima×C. moschata)×C. pepo hybrid F1 was shriveled with no viability. These indicated the pollen viability decreasing might be a factor of low fertility of Cucurbita interspecific hybrid F1. Individuals recovered pollen viability partly were separated from inbred or backcross progenies, and the later was better. |
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| Keywords: | Cucurbita interspecific hybridization pollen viability |
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