园艺学报 ›› 2003, Vol. 30 ›› Issue (6): 748-750.

• 研究报告 • 上一篇    


史燕山 骆建霞 赵国防 秦桂萍 刘学恩   

  1. (天津农学院园艺系,天津300384)
  • 收稿日期:2003-02-14 修回日期:2003-04-25 出版日期:2003-12-25 发布日期:2003-12-25

Search for Proper Dose of 60Co-r Ray Radiation Breeding

Shi Yanshan,Luo Jianxia,Zhao Guofang,Qin Guiping,and Liu Xueen

  1. (Department of Horticulture, Tianjin Agricldtural College ,Tianjin 300384,China)
  • Received:2003-02-14 Revised:2003-04-25 Online:2003-12-25 Published:2003-12-25

摘要: 对晚香玉的种球进行5种剂量的60Co-r射线辐射处理,以未照射种球为对照,采用随机区组设计栽培。对出苗率、成苗率和苗高的调查分析显示:在l0~50 Gy辐射剂量范围内,随辐射剂量加大,对出苗及生长的抑制作用逐渐加强。小种球的辐射敏感性强于大种球。以半致死剂量LD50和半致矮剂量( R50为标准,根据出苗率、成苗率和生长量的分析以及回归分析的结果可确定:晚香玉小种球的适宜剂量’勾l5~20 Gv,大种球的适宜剂量为2h5~30 Gv

关键词: 晚香玉, 60Co-r射线, 辐射剂量

Abstract: The bulbs of tuberose were treated with 6~Co.7 ray in dose of 10 Gy,20 Gv,30 Gv,40 Gv and 50 Gv respectively and cuhivated in andomized blocks design after treatment.1he untreated bulbs used as control.Survival rate and the height of plant were examined.The result indicated that it Was obviously that the inhibition of both the survival rate and the height of plant would be enhaneed with inerease of the radiation dose ranged in this experiment.1he young bulbs were more sensitive to the radiation than mature ones.According to the survival rate.the height of plant and the result of regression analysis,15—20 Gy can be considered as proper radiation dose for youn g bulbs an d 25—30 Gy f0r ma ture ones in the stan dard of LDso and GR5o values.

Key words: Tuberose(Polianthes tuberosa L.), 6OCo-r ray, Radiation dose