不同辐照强度和浸种时间对作物种子萌发的影响

目的]研究不同辐照强度和浸种时间对作物种子萌发的影响。方法]对5个农作物品种3个不同浸种时间的种子进行Cs~(137)γ射线2种剂量的辐照处理,研究其对不同作物品种发芽势、芽长及根长的影响。结果]辐照对不同浸种时间的油菜和高粱种子萌发没有显著影响,辐照对浸种时间较长的水稻和大麦种子萌发有抑制作用,辐照对玉米干种子和浸种12 h种子萌发有促进作用。辐照对不同浸种时间的油菜和高粱种子萌发没有显著影响,但显著抑制了高粱芽和根的生长,也抑制了浸种后油菜芽和根的生长,说明辐照对种子萌发、芽长及根长的影响不同。结论]该研究为进一步研究Cs~(137)γ射线对多种农作物种子的辐射敏感性差异提供了基础资料。

Effects of Different Radiation Intensity and Soaking Time on Crop Seed Germination

Objective]To study effects of different radiation intensity and soaking time on crop seed germination.Method]The effect of two different radiation dosages of Cs137γ ray on the 5 crop varieties,seeds with different soaking time was studied.Result]Irradiation had no significant effect on the germination of rape and sorghum seeds with different soaking time.Irradiation inhibited the germination of rice and barley seeds with longer soaking time.Irradiation promoted the germination of maize dry seeds and soaking for 12 h seeds.Irradiation significantly inhibited the growth of rape and sorghum′s buds and roots,which indicated that the effects of irradiation on seed germination,bud length and root length were different.Conclusion]The research provided basic data for further study the radiation sensitivity of Cs137γ ray on several kinds of crop seeds.