| 雄性不育小麦BS210育性转换特性 |
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| 引用本文： | 孙辉,张风廷,王永波,叶志杰,秦志列,白秀成,杨吉芳,高建刚,赵昌平.雄性不育小麦BS210育性转换特性[J].作物学报,2017,43(2):171-178. |
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| 作者姓名： | 孙辉 张风廷 王永波 叶志杰 秦志列 白秀成 杨吉芳 高建刚 赵昌平 |
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| 作者单位： | 赵昌平, E-mail: cp_zhao@vip.sohu.com |
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| 摘 要： | 二系法杂交小麦属我国原创性成果,温光敏雄性不育小麦是二系法杂交小麦应用的核心。BS210是本课题组选育的小麦雄性不育材料,2012—2014年通过3个生态区分期播种试验和人工气候箱温光调控试验,研究了BS210的育性转换特性。在不育制种生态区,适期播种条件下,BS210的不育度可达95%~100%,其安全制种播种时期为安徽阜阳9月30日至10月10日、云南丽江9月30日;在可育繁种生态区,晚播条件下,BS210的自交结实率可达70%以上,其安全繁种播种时期为北京海淀11月10日、北京顺义9月30日至11月10日。BS210以温度敏感为主,光照时长对BS210育性影响较小,温度转换敏感期为药隔至单核期。在光照10.0~12.5 h时,其温度转换阈值为10~12?C;在光照14 h时,其温度转换阈值为8~10?C。在短日低温条件下,花粉粒碘染以染败为主,表现为不育;在长日高温条件下,花粉粒碘染为圆形、黑染,表现为可育。通过明确BS210育性转换特性,为指导BS210安全制繁种生态区的选择提供理论依据。
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| 关 键 词： | 二系杂交小麦 温光敏雄性不育 育性转换 |
| 收稿时间： | 2016-03-15 |
Fertility Alteration in Male Sterile Line BS210 of Wheat |
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| SUN Hui,ZHANG Feng-Ting,WANG Yong-Bo,YE Zhi-Jie,QIN Zhi-Lie,BAI Xiu-Cheng,YANG Ji-Fang,GAO Jian-Gang,ZHAO Chang-Ping.Fertility Alteration in Male Sterile Line BS210 of Wheat[J].Acta Agronomica Sinica,2017,43(2):171-178. |
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| Authors: | SUN Hui ZHANG Feng-Ting WANG Yong-Bo YE Zhi-Jie QIN Zhi-Lie BAI Xiu-Cheng YANG Ji-Fang GAO Jian-Gang ZHAO Chang-Ping |
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| Abstract: | Two-line hybrid wheat is an innovation in China and its critical technique is the application of thermo-photo-sensitive male sterile line. BS210 is a male sterile wheat line developed by our group. We studied the fertility transition characteristics of BS210 with differentially sowing tests at three ecological locations and contorlled experiments in growth chambers from 2012 to 2014. In the hybrid seed-produing locations, BS210 showed sterility of 95–100% under suitable sowing conditions with the safe sowing dates from September 30th to October 10th in Fuyang of Anhui and September 30th in Lijiang of Yunnan. In the self-reproducting locations, BS210 showed fertility of 70% under late sowing conditions with the safe sowing dates of November 10th in Haidian of Beijing and from September 30th to November 10th in Shunyi of Beijing. The fertility alteration of BS210 was induced mainly by temperature rather than photoperiod. The phase from pollen mother cell formation to mono-nucleate was sensitive to fertility alteration of BS210. The critical temperature of alteration was 10–12°C under the photoperiod of 10.0–12.5 h and 8–10°C under the photoperiod of 14 h. The pollen-staining observation indicated that the sterile pollen grains belonged to stained abortion type under short-day and low-temperature condition and the fertile pollen grains were round in shape and dark blue in color under long-day and high-temperature condition. Defining the fertility transition characteristics of BS210 will provide theoretical guidelines for selecting suitable ecological zone to ensure safe seed production. |
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| Keywords: | Two-line hybrid wheat Thermo-photo-sensitive male sterile line Fertility alteration |
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