Preliminary Study on the Mutagenic Effects of Space Flight on Alfalfa Seeds  

苜蓿种子空间诱变生物学效应研究初报(英文)

作　　者：任卫波[1] 赵亮[2] 王蜜[2] 陈立波[1] 郭慧琴[1] 

机构地区：[1]中国农业科学院草原研究所,内蒙古呼和浩特010010 [2]内蒙古农业大学,内蒙古呼和浩特010018

出　　处：《Agricultural Science & Technology》2008年第4期51-55,共5页农业科学与技术（英文版）

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)~~

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.[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.

关 键 词：Space-induced MUTATION MEDICAGO SATIVA L. Mutagenic effect 

分 类 号：S541.9[农业科学—作物学]