摘要
用60 Coγ辐射预先浸泡 1h的菜心种子 ,结果表明辐射延缓了种子萌发 ,但不影响萌发率 ;幼苗的高度、根长、幼苗鲜重随剂量增大而受抑制 ,与存活率间呈显著的负相关 ;适宜的处理剂量为 2 0 0～ 30 0Gy。
Seeds of Brassica campetris L. ssp.Chinensis var.utilis pre\|soaked with water for 1h were irradiated with 60 Co γ\|ray. Irradiation delayed the germination of seeds but did not affect the germination rate. The height, root length, fresh weight and survival rate of seedlings decreased with the increase of irradiation dose. There were significant negative correlation between death rate and the height, root length and fresh weight. The dose of 200～300Gy were recommended as suitable irradiation doses for pre\|soaked seeds.
出处
《核农学报》
CAS
CSCD
北大核心
2001年第1期6-10,共5页
Journal of Nuclear Agricultural Sciences
基金
广东省"九.五"科技攻关项目
关键词
菜心
辐射
种子萌发
幼苗生长
诱变育种
耐高温品种
剂量
Brassica campetris L.ssp.Chinensis var.utilis
irradiation
seed germination
shoot growth
