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白杨双交无性系抗旱性鉴定研究 预览 被引量:10

Study on Comprehensive judgement of drought resistance ability of white poplar hybrid clones
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摘要 以20个白杨双杂交杂种新无性系为主要试验材料,研究了无性系叶片抗脱水能力,叶片渗透调节能力,水分胁迫下的生长和生理表现,并对无性系抗旱能力进行了综合评价。无性系间在各项指标间存在着显著差异,以苗高、单叶面积、净光合速率、蒸腾速率、叶片失水率和叶片渗透调节能力6项指标作为育种材料抗旱性筛选的综合鉴定指标,并尝试采用加权排序方法对无性系抗旱能力进行鉴定。综合抗旱能力最强的10个无性系为B432。B40 With 20 double cross hybrid clones of white poplar, whose hybridizationcombination is (P. tomentosa ×P,bolleana)× (P,alba× P, tremula )as the experimentalmaterials, the dehydration tolerance abilities, osmotic adjustment abilities as well asgrowth and physiological performances of the clone were studied; and the droughtresistance abilities of the clones were judged comprehensively' Significant differences of allthe indices studied existed among the clones. The plant height, single leaf area,photosynthesis,transpiration,leaf water-losing rate and the ability of osmotic adjustmentwere suggested to be used as standards in drought-resistance clones selection. A methodof weighted arrangement was used in comprehensive judgment of drought resistance of theclones. The ten clones that had strongest comprehensive drought-resistance abilities wereB432, B402, MX2, B412, 3, B435, B450, B430, B43 7, B406.
作者 杨敏生 丛金山 Yang Minsheng; Qin Anchen(Forestry School, Hebei Agric. Univ.,Baoding 071000)Cong Jinshan(Chengde Institute of Forest Inventory and Planning,Chengde 067000)
出处 《河北农业大学学报》 CAS CSCD 北大核心 1997年第1期 17-23,共7页 Journal of Agricultural University of Hebei
基金 “毛白杨短周期工业用材新品种选育”子专题 河北省自然科学基金
关键词 白杨 杂交无性系 抗旱性 鉴定指标 综合鉴定 Hybrid clone of white poplar Drought resistance Appraisal indices Comprehensive judgment
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