【作者】 虞秋成； 刘录祥； 徐国沾； 施金裕；

【Author】 Yu Qiu-cheng Liu LU-xiang QU Guo-zhang Shi Jin-yu(Institute for Application of Atomic Energy in Agriculture, Jiangsu Academy of Agricultural Sciences, Jiangsu Prov. Nanjing. 210014; Institute for Application of Atomic Energy in Agriculture, CAAS Bejing, 100094; Jintan Agricultural Experimental Centre,, Jiangsu Prov. Jintan City 213230)

【机构】 江苏省农业科学院原子能利用研究所； 中国农业科学院原子能利用研究所； 江苏省金坛市农科所；

【摘要】 利用零磁场对水稻干种子进行诱变处理,研究其细胞学和生物学效应。结果表明:零磁场处理水稻干种子后,当代细胞染色体畸变频率提高,畸变类型以染色体桥和微核高于其他畸变类型;从生物学效应来看,零磁场处理对当代发芽率、成苗率、苗高和分蘖有促进生长作用:M2变异类型丰富,早熟类型突变频率相对较高,而育性分离较大,各类分离程度大小依次为:早熟>育性>株高>穗型>粒型;当选变异类型单株后代稳定快,说明零磁场诱变处理技术在水稻品种改良方面有着很高的利用价值。更多还原

【Abstract】 This paper was dealed with cytological and biological effects on dry rice seed treated in the condition of magnetic-free space intensity. The results showed that the chromosomal aberration rate was higher than that of the controls, and the chromosomal bridges and the micronucleus were greater than that of other types of aberration. The seed germination rate, seedling survival rate, seedling height and tilling were promoted in M1 generation. More segregation of characters such as early heading and fertility were appeared in Mb generation. The heightest rate of mutant type was early heading stage and the greatest segregation degree was fertility among the all variations in M2. Kinds of variations was in order as follows: early heading >fertility>plant height> ear type>grain type. All mutant characters were generated steadily. It was concluded that there was a practical value on rice variety improvement by using the method of magnetic-free space intensity treatment.更多还原