| 3种披碱草属牧草交配系统研究 |
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| 引用本文： | 德英,乌吉玛,穆怀彬,解继红,赵来喜.3种披碱草属牧草交配系统研究[J].植物遗传资源学报,2015,16(4):903-906. |
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| 作者姓名： | 德英 乌吉玛 穆怀彬 解继红 赵来喜 |
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| 作者单位： | 中国农业科学院草原研究所,内蒙古师范大学生命科学与技术学院,中国农业科学院草原研究所,中国农业科学院草原研究所,中国农业科学院草原研究所 |
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| 摘 要： | 本文通过测定3种披碱草属牧草的花粉-胚珠比（P/O值）、杂交指数（OCI），结合不同授粉方式下这3种牧草的结实率，探讨这3种披碱草属牧草的交配系统, 为披碱草属牧草杂交育种、丰产栽培等提供理论依据。结果表明，老芒麦、麦薲草和披碱草花粉-胚珠比（P/O值）均处于31.9～396.0，交配系统属于兼性自交；杂交指数OCI值为2，交配系统也属于兼性自交；结实率统计表明，以自交为主，异交可育。因此，3种披碱草属牧草的交配系统属于兼性自交类型。
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| 关 键 词： | 3种披碱草属牧草 交配系统 花粉-胚珠比 杂交指数 结实率 |
| 收稿时间： | 6/5/2014 12:00:00 AM |
| 修稿时间： | 2/2/2015 12:00:00 AM |
Study on Mating System of 3 Elymus spp. |
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| Abstract: | To provide a theoretical basis for crossbreeding, yielding cultivation of Elymus, an experiment was conducted to study mating system of 3 Elymus spp. by pollen-ovule ration (P/O value), outcrossing index and seed setting rate under different pollination methods. The results showed that the pollen-ovule ration (P/O value) was 31.9-396.0, mating system was the facultative autogamy. Outcrossing index ( OCI ) value is 2, was also the facultative autogamy. Seed setting rate showed that 3 Elymus spp. was selfing, out-cross compatible. As a result, mating system of 3 Elymus spp. belong to the facultative autogamy. |
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| Keywords: | 3 Elymus spp mating system pollen-ovule ration outcrossing index seed setting rate |
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