| 神舟十号飞船搭载对小麦品种济麦22的生物效应研究 |
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| 引用本文： | 逄明达,;刘录祥,;谢永盾.神舟十号飞船搭载对小麦品种济麦22的生物效应研究[J].激光生物学报,2014(4):326-330. |
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| 作者姓名： | 逄明达 ;刘录祥 ;谢永盾 |
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| 作者单位： | [1]中国人民大学附属中学,北京100080; [2]中国农业科学院作物科学研究所/农作物基因资源与基因改良国家重大科学工程,北京100081 |
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| 基金项目： | 国家863计划（2012AAl01202）; 农业部公益性行业项目（201103007）; 国际原子能机构项目（RAS5056） |
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| 摘 要： | 探索空间环境对农作物生长的影响是充分发掘和利用航天育种技术优势的重要前提和基础。利用神舟十号飞船搭载小麦主推品种济麦22,对幼苗的生长势、苗高、鲜重和根长等主要指标进行对比分析,利用植物特异的叶绿素荧光技术研究上述指标变化的生理原因,并检测遗传物质的表观修饰状态。结果表明,飞船搭载小麦种子萌发的幼苗与地面对照相比鲜重降低,根长变短,根系数变少。叶绿素荧光参数测定发现,经过空间搭载的种子产生幼苗各种生长指标的差异是空间环境对植物产生的生理胁迫原因所致。经过空间飞行的种子萌发产生的幼苗,其基因组的甲基化修饰程度与对照相比发生了明显改变。
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| 关 键 词： | 神舟十号 空间环境 小麦 叶绿素荧光 甲基化 |
Biological Effects of Space Flight on Winter Wheat Jimai22 Aboard on Shenzhou No. Ten Spacecraft |
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| Institution: | PANG Mingda , LIU Luxiang, XIE Yongdun (1. The High School Affiliated to Renmin University of China, Beijing 100080, China; 2. Institute of Crop Science/National Kcy Facility for Crop Gene Resources and Genetic Improvement, Beijing 100081, China) |
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| Abstract: | Better understanding the effects of space environment on major crop growth could accelerate the application of space breeding technology. After space flight aboard on the Shenzhou No. Ten spacecraft,the seedling growth traits,i. e.,seedling vigor,seedling height,fresh weight and root length of winter wheat variety Jimai 22 were studied. Compared to the control samples,seedlings from space flight seeds showed reduced fresh weight,shortened root length and decreased root number. With the chlorophyll florescence detecting technology,we found such effects on seedling growth could be caused by physiological stress. Our results also showed that the genomic methylation pattern was modified by space flight. Our results could provide experimental evidence for wheat space breeding. |
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| Keywords: | Shenzhou No Ten spacecraft space environment wheat chlorophyll florescence methylation |
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