| 野扁桃的繁育系统研究 |
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| 引用本文：程 靖，李 疆，罗淑萍，陆 婷.野扁桃的繁育系统研究[J].西北农业学报,2017,(2):242~247 |
| DOI:10.7606/j.issn.1004-1389.2017.02.012 |
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| 基金项目:国家自然科学基金（31260186）。 |
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| 中文摘要:为研究孑遗植物野扁桃的繁育系统，采用野外观测、荧光显微观察及统计分析方法对野扁桃的繁育系统进行研究。结果表明，该种单花开花持续时间为8 d，花冠直径为(24.79 ± 0.40) mm；花粉活力在刚散粉时最高达96.88%，在第17天半数花粉失去活性，第28天花粉完全失去活性；柱头在开花第1～3天可授性最强，可持续7 d；杂交指数为3；自花花粉和异花花粉均能在柱头上萌发，授异花花粉59 h后，花粉管进入子房。人工控制授粉试验表明，自花、异花授粉均能结实，需要昆虫传粉媒介。以上结果说明，野扁桃属于混合交配繁育系统类型，需要传粉者。 |
| 中文关键词:野扁桃 杂交指数 授粉试验 繁育系统 |
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| Study on Breeding System of Amygdalus ledebouriana |
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| Abstract:A.ledebouriana is a relict species in Xinjiang. Its breeding system was studied by field observation, fluorescence microscopy observation and statistical analysis methods. The results showed that the flowering process of single flower lasted for 8 days and the corolla diameter was (24.79±0.40) mm;the pollen viability was 96.88% at beginning, half pollen lost activity after 17 days and all pollens lost activity in the 28 th day;stigma had highest receptivity from 1 to 3 days at blossoming stage, lasting 7 days;the outcrossing index was 3;pollens in both self-pollination and cross-pollination germinated on the stigma, and pollen tubes could reach the ovary after 59 hours in cross-pollination. The study of artificial pollination showed that both self-pollination and cross-pollination were fertile, which it needed insects to be the pollination media. The results suggested that the breeding system is self-compatible and pollinators is needed. |
| keywords:Amygdalus ledebouriana Hybrid index Artificial pollination Breeding system |
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