摘要
为研究杨树抗寒性,以6个金白杨无性系为材料,测定了其半致死温度、丙二醛、可溶性蛋白、脯氨酸和超氧化物歧化酶含量,并对测定结果进行单因素方差分析与多重比较,建立了各无性系低温-电导率回归模型。结果显示,各无性系组织半致死温度在-23.8℃～-45.1℃之间;无性系间抗寒性差异极显著,C4抗寒性最好;各无性系抗寒性由大到小依次为C4>A20>K7>C38>C52>C15.
In order to study the cold resistance of Poplar,the semi-lethal temperature and contents of malondialdehyde,soluble protein,proline and superoxide dismutase were determined with 6 clones of Jinbaiyang as experimental materials. Determination results were treated with the single factor variance analysis and multiple comparison,low temperature-conductivity regression models for each clone were established. The results showed that the semi-lethal temperature of each clone was-23.8 ℃ ^-45.1 ℃. The difference of cold resistance among clones was extremely significant in which the cold resistance of C4 was the best. The order of the cold resistance of these 6 clones was C4>A20>K7>C38>C52>C15.
作者
李丕全
Li Piquan(Shanxi Province Poplar High-yield Forest Bureau of Sanggan River,Datong 037006,China)
出处
《山西林业科技》
2018年第4期7-10,共4页
Shanxi Forestry Science and Technology
基金
山西省科技攻关项目(20120312013-5)
关键词
金白杨
无性系
抗寒性
Jinbaiyang
Clones
Cold resistance
