摘要
研究了5个杨树无性系冬季休眠期苗杆水分蒸腾速率、水分饱和亏缺、含水率和春季起苗后自然曝晒条件下苗木失水状况对造林后展叶时间的影响。结果表明:受干旱胁迫的影响,参试无性系的4个指标均表现出不同程度的差异。用模糊数学隶属度公式对其抗旱性进行综合评价,得出5个无性系抗旱能力排序为84K杨>新疆杨>意101杨>毛30>美黑-57×新。
Water transpiration rate, water saturation and deficits and water content in stems of seedlings during winter period were studied. In addition, effect of water deficits on the leave developing period was studied after the seedlings had been dug up in the Spring and exposed to the sun. The results showed that all indexes mentioned above were influenced significantly under condition of water stress. Drought resistance of clones were evaluated using the formula of vague mathematical jurisdiction, the abilities of drought resistance of the clones from high to low were （P, alba× P. glandulosa）, （P. bolleana）, （P. alba ） , （ P. tomentosa- 30 ） , （P. deltoides CL. 57×P. bolleana ）.
出处
《西北林学院学报》
CSCD
北大核心
2007年第3期64-66,共3页
Journal of Northwest Forestry University
基金
陕西省科技厅重点攻关项目"杨树新品种选育研究"(2003K02-G8)
关键词
白杨派无性系
水分胁迫
抗旱性
aspen clones water stress condition drought-resistance
