摘要
用６０Ｃｏγ射线５０～１００Ｇｙ辐照，成功选育出高产、优质、抗性强和区域适应性广等优良特性为一体的苎麻新品种圆叶青和７４６９。苎麻不同器官的辐射敏感性不同，辐照苎麻种子的适宜剂量为５０～３００Ｇｙ，辐照地下茎的适宜剂量为２０～９０Ｇｙ。辐照苎麻种子Ｍ１能发生明显的变异分离，其诱变率可提高１２７０％～５２８３％。因此，在Ｍ１即可进行严格的选择，并采用无性系繁殖技术，固定其优良性状，扩大其群体，供育种和生产应用。辐照苎麻种子比辐照地下茎的诱变、选择效果好，并获得预期效果，而辐照地下茎的技术条件要求高，存活率低，有益突变出现的几率更低，目前尚未在育种中取得实质性成效。
New ramie varieties of “Yuanyeqing” and “7469” were developed by adopting a new techique of 60 Co γ rays radiation.The two varieties have the combination of high yield,super quality and high resistance.The suitable dosage of irradiation to ramie seeds was 50～300Gy,and to the underground stems was 20～90Gy. Compared with other crops also treated with 60 Co γ rays,M 1 of ramie showed the variation of various characters with inducing rate increased by 12 70%～52 83%.Therefore,M 1 of the irradiated ramie may be used for strictly selection for promising plants and then using the techniques of insexual propagation for fixing some superior charaters.Ramie seeds irradiated with 60 Co γ rays were therefore considered as an ideal material for developing new variety.
出处
《核农学报》
CAS
CSCD
1998年第6期337-341,共5页
Journal of Nuclear Agricultural Sciences
关键词
苎麻
核诱变
育种
新品种
Ramie, irradiation, induction, select, new variety
