摘要
选取关中地区8种常绿阔叶树种女贞、广玉兰、棕榈、石楠、桂花、枇杷、海桐、南天竹的当年生叶片为试验材料,采用人工冷冻处理法,对其叶片在不同低温处理后的细胞膜透性、可溶性糖、可溶性蛋白及游离脯氨酸含量等指标进行测定分析。结果表明,随着处理温度的降低,各树种叶片的相对电导率呈上升趋势,棕榈、海桐、石楠、枇杷上升的比南天竹、女贞、桂花慢;各树种叶片中可溶性糖、蛋白质和游离脯氨酸含量均表现为随着温度的降低呈先升高后降低的变化趋势,但各树种发生变化的温度不同。根据各指标的测定结果对8种树种的抗寒性强弱进行比较,结果为:枇杷、石楠>广玉兰、棕榈、海桐>女贞、桂花>南天竹。
With the leaves of eight evergreen broad-leaved tree species in Guanzhong as materials,disposed through low temperature,relative leakage of electrolytes of the leaves,soluble sugar,soluble protein and free proline content were measured and compared.The results showed that the relative leakages of electrolytes of the leaves increased with decreasing disposed temperatures.The contents of soluble sugar,soluble protein and proline of tree species increased firstly then descended with decreasing disposed tempera...
出处
《西北林学院学报》
CSCD
北大核心
2008年第5期26-29,共4页
Journal of Northwest Forestry University
基金
中国科学院知识创新项目"黄土高原快速绿化与植被恢复"(KZCX2-XB1-06)
关键词
常绿阔叶树种
低温胁迫
渗透调节物质
关中地区
evergreen broad-leaved tree species
low temperature stress
osmoregulatory molecules
Guanzhong
