| Preliminary Study on the Mutagenic Effects of Space Flight on Alfalfa Seeds |
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| 作者单位： | REN Wei-bo1，ZHAO Liang2，WANG Mi2，CHEN Li-bo1，GUO Hui-qin2 1.Grassland Research Institute，Chinese Academy of Agricultural Sciences，Huhhot 010010;2.Inner Mongolia Agricultural University，Huhhot 010010 |
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| 摘 要： | Objective] The study aimed to understand the mutagenic effects of space flight on alfalfa seeds.Method] Seeds of three lines of alfalfa were carried into orbit by the satellite 'Shijian-8' for space fight,the indices including seed germination rate,plant height and growth rate,were measured after the seeds been retrieved.Result] Remarkable mutagenic effects occurred on the flight seeds,which were mainly presented by abnormal cotyledon,extended variation range of plant height and growth rate.Nineteen plants with increased plant height were preliminarily screened from the T0 progenies,but whether the mutated trait could inherit should be confirmed in further study.Three flight lines of alfalfa are different in the percentages of abnormal cotyledon(10%-18%),variation range of plant height(increased 30%-150% compared to control),selected plant number with increased plant height(5-7 plants),suggesting that differences exits between the three lines in mutation efficiency.Conclusion] Valuable mutated materials could be obtained by space flight and applied in modern agriculture.
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Preliminary Study on the Mutagenic Effects of Space Flight on Alfalfa Seeds |
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| Authors: | REN Wei-bo ZHAO Liang WANG Mi CHEN Li-bo GUO Hui-qin Grassland Research Institute Chinese Academy of Agricultural Sciences Huhhot Inner Mongolia Agricultural University Huhhot |
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| Institution: | REN Wei-bo1,ZHAO Liang2,WANG Mi2,CHEN Li-bo1,GUO Hui-qin2 1.Grassland Research Institute,Chinese Academy of Agricultural Sciences,Huhhot 010010,2.Inner Mongolia Agricultural University,Huhhot 010010 |
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| Abstract: | Objective] The study aimed to understand the mutagenic effects of space flight on alfalfa seeds.Method] Seeds of three lines of alfalfa were carried into orbit by the satellite 'Shijian-8' for space fight,the indices including seed germination rate,plant height and growth rate,were measured after the seeds been retrieved.Result] Remarkable mutagenic effects occurred on the flight seeds,which were mainly presented by abnormal cotyledon,extended variation range of plant height and growth rate.Nineteen plants with increased plant height were preliminarily screened from the T0 progenies,but whether the mutated trait could inherit should be confirmed in further study.Three flight lines of alfalfa are different in the percentages of abnormal cotyledon(10%-18%),variation range of plant height(increased 30%-150% compared to control),selected plant number with increased plant height(5-7 plants),suggesting that differences exits between the three lines in mutation efficiency.Conclusion] Valuable mutated materials could be obtained by space flight and applied in modern agriculture. |
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| Keywords: | Space-induced mutation Medicago sativa L Mutagenic effect |
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