文献类型：期刊文献

中文题名：^(60)Co-γ射线辐照对黄牡丹种子萌发及幼苗生长的影响

英文题名：Effects of ^(60)Co-γ Ray Irradiation on Seed Germination and Seedling Growth of Paeonia Lutea

作者：李奎[1,2] 郑宝强[2] 王雁[2] 胡晓雪[1] 吴红芝[1]

第一作者：李奎

机构：[1]云南农业大学园林园艺学院;[2]中国林业科学研究院林业研究所

年份：2010

卷号：25

期号：6

起止页码：840-843

中文期刊名：云南农业大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：国家"863"课题(2006AA100109);中国林业科学院林业研究所重点项目(ZD200704)

语种：中文

中文关键词：黄牡丹种子;辐照;萌发;生长;临界剂量

外文关键词：seeds of Paeonia lutea ; irradiation ; germination ; seedling growth ; semi-lethal dose

分类号：S685.11

摘要：对黄牡丹种子进行不同剂量的60Co-γ射线辐照处理,以未照射种子为对照,观测辐照对种子生根、萌发及幼苗生长的影响。结果表明:种子生根率和萌发率随辐照剂量增加而降低,高剂量(100 Gy以上)对种子萌发和幼苗生长有显著的抑制作用(P<0.05),辐照的剂量与幼苗存活率呈负相关,且幼苗表型性状各不相同。根据试验数据以及回归分析确定黄牡丹种子的临界剂量为48.5 Gy,适宜剂量范围为40～60 Gy。
The seeds of Paeonia lutea were irradiated by different doses of ^60Co-γ ray, and the effects on the rooting rate, germination rate and seedling growth were investigated. The results showed that germination and seedling growth decreased with the increase of irradiation dose ; higher dose irradiation （≥100Gy） inhibited the growth significantly （P 〈 0. 05）. Negative correlation was found between seedling survival rate and irradiation dose. It was concluded that semi-lethal dose of the P. lutea was 48.5 Gy, and the suitable irradiation dose range was 40 to 60 Gy.