| 曲穗草属天然杂种的鉴定及形成研究 |
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| 引用本文： | 侯晨曦,翟星光,吴丹丹,周永红,张昌兵,张海琴.曲穗草属天然杂种的鉴定及形成研究[J].植物科学学报,2022,40(1):11-20. |
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| 作者姓名： | 侯晨曦 翟星光 吴丹丹 周永红 张昌兵 张海琴 |
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| 作者单位： | 1. 四川农业大学草业科技学院, 成都 611130;
2. 四川农业大学小麦研究所, 成都 611130;
3. 四川省草原科学研究院, 成都 610000;
4. 西南作物基因资源发掘与利用国家重点实验室, 成都 611130 |
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| 基金项目： | 国家自然科学基金(31870309、31670331);阿坝州科技局项目(R21YYJSYJ0014);四川省科技厅项目(2021NZZJ0010)。 |
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| 摘 要： | 本研究通过形态学、细胞学、系统发育分析等方法对小麦族曲穗草属(Campeiostachys)的两株疑似天然杂种进行鉴定,探究其可能的亲本及杂种形成机制.结果显示:两株天然杂种在形态上与短芒曲穗草(Cam-peiostachys breviaristata(Keng)Y.H.Zhou,H.Q.Zhang et C.R.Y...
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| 关 键 词： | 曲穗草属 天然杂种 DMC1 rps16 |
| 收稿时间： | 2021-08-09 |
Identification and formation of natural hybrids of Campeiostachys in Triticeae |
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| Hou Chen-Xi,Zhai Xing-Guang,Wu Dan-Dan,Zhou Yong-Hong,Zhang Chang-Bing,Zhang Hai-Qin.Identification and formation of natural hybrids of Campeiostachys in Triticeae[J].Plant Science Journal,2022,40(1):11-20. |
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| Authors: | Hou Chen-Xi Zhai Xing-Guang Wu Dan-Dan Zhou Yong-Hong Zhang Chang-Bing Zhang Hai-Qin |
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| Institution: | 1. Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China;
2. Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China;
3. Sichuan Academy of Grassland Science, Chengdu 610000, China;
4. State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China |
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| Abstract: | In this study,morphological,cytological,and phylogenetic analyses were used to identify two suspected natural hybrids in the genus Campeiostachys.Results showed that the two natural hybrids were similar to C.breviaristata(Keng)Y.H.Zhou,H.Q.Zhang et C.R.Yang.morphologically,but had low pollen fertility(13.30%and 21.20%)and seed setting(10.70%and 18.60%).Cytological studies showed that the two hybrids were hexaploids(2n=42),with StStYYHH genomes.Phylogenetic analysis based on the nuclear gene DMC1 and chloroplast gene rps16 showed that the possible parents of the natural hybrids were C.breviaristata,Elymus submuticus Keng,and Elymus atratus(Nevski)Hand.-Mazz,with C.breviaristata being the female parent.Considering the hybrids had no or short awns,we inferred that C.breviaristata(female parent)and E.submuticus may be the parental species of these two natural hybrids. |
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| Keywords: | Campeiostachys Natural hybrids DMC1 rps16 |
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