The pure seeds of rice varieties Zaoxian 6188, D6049; late indica Minghui 63, Waiqi, and Xiangge 7301 ;late japonica Nonghu 6 and Bei K15 were carried by satellite 921006. After the satellite returned, we col-lected, ...The pure seeds of rice varieties Zaoxian 6188, D6049; late indica Minghui 63, Waiqi, and Xiangge 7301 ;late japonica Nonghu 6 and Bei K15 were carried by satellite 921006. After the satellite returned, we col-lected, planted, and tested the variances caused by space-inducing, with a part of seeds for each as CK on展开更多
[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,th...[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.展开更多
文摘The pure seeds of rice varieties Zaoxian 6188, D6049; late indica Minghui 63, Waiqi, and Xiangge 7301 ;late japonica Nonghu 6 and Bei K15 were carried by satellite 921006. After the satellite returned, we col-lected, planted, and tested the variances caused by space-inducing, with a part of seeds for each as CK on
基金Supported by Special Fund on Fundamental Scientific Research as Operating Expenses among Commonweal Scientific Research Institutions at Na-tional Level(Grassland Research Institute,Chinese Academy of Agricultur-al Sciences)National Key Project of Scientific and Technical Supporting Programs Funded by Ministry of Science & Technology of China(2008BADB3B04)~~
文摘[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.
