摘要
对思茅松种子进行辐照处理,分析辐照后思茅松幼苗的生长状况。结果表明:辐照处理能引起幼苗的形态发生变化;低于50 Gy辐照处理对思茅松幼苗高生长和存活率没有不利影响,当辐照剂量为100 Gy时,思茅松幼苗高生长受到显著抑制,存活率降低;对照和低剂量处理的思茅松幼苗的高生长与种子千粒重相关性较强;5个家系的半致死剂量分别为106.3 Gy、82.2 Gy、111.2 Gy、111.9 Gy和107.4 Gy。认为思茅松辐照育种的适宜剂量为100—110 Gy,当千粒重小于10 g时,适宜剂量为80—90 Gy。
The seeds of P.kesiya var.langbianensis were irradiated by 60Co-γ ray,and the seedling growth after irradiation by different dose was analyzed.The results showed that irradiation treatment could induce the morphological changes of seedlings;Irradiation treatment below 50 Gy had no adverse effect on the growth and survival rate of the seedling,when the irradiation dose was 100 Gy,the seedling growth was significantly inhibited,and the survival rate decreased.The correlation of seedling height growth and 1 000-grain weight was strongly in control and low dose treatment.The semi-lethal doses of 5 families were 106.3 Gy,82.2 Gy,111.2 Gy,11.19 Gy and 107.4 Gy respectively.The appropriate dose of irradiation breeding of P.kesiya var.langbianensis were suggested as 100—110 Gy,and the appropriate dose was 80—90 Gy when the 1 000-grain weight was less than 10 g.
作者
李秀芬
朱建军
童清
唐红燕
接富庆
LI Xiu-fen ZHU Jian-jun TONG Qing TANG Hong-yan JIE Fu-qing(Institute of Forestry and Pomology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China puer Institute of Forestry Sciences, Puer 665000, China juxian Forestry Bureau of Shandong Province, Juxian 276500, China)
出处
《上海农业学报》
CSCD
2016年第5期119-122,共4页
Acta Agriculturae Shanghai
基金
云南省科技厅重点新产品开发项目(2014BB012)
关键词
思茅松
60Co-γ辐照
半致死剂量
幼苗
形态变化
Pinus kesiya var. langbianensis
60Co-γ ray irradiation
Semi-lethal dose
Seedling
Morphological change
