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低温胁迫对青榨槭幼树抗寒指标的影响
引用本文:缴丽莉,倪志云,路丙社,白志英,周如久,冯蕾.低温胁迫对青榨槭幼树抗寒指标的影响[J].河北农业大学学报,2006,29(4):44-47.
作者姓名:缴丽莉  倪志云  路丙社  白志英  周如久  冯蕾
作者单位:1. 河北农业大学,园林与旅游学院,河北,保定,071000
2. 河北省林业局,河北,石家庄,050000
3. 衡水学院生物系,河北,衡水,053000
摘    要:以3年生青榨槭幼树1年生枝条为材料,测定了不同冷冻处理条件下细胞超氧化物歧化酶(SOD)和过氧化物酶(POD)活性、丙二醛(MDA)含量以及枝条的相对电导率。结果表明:随着温度下降,细胞SOD和POD酶活性均呈现先升高后下降的趋势,MDA含量随温度降低逐渐升高;枝条相对电导率随处理温度降低呈“S”形上升。相对电导率结合Logistic方程推算的青榨槭低温半致死温度(LT50)为-29.93℃,与枝条恢复生长试验结果基本一致,因此,相对电导率可以作为测定青榨槭低温半致死温度简洁、有效的生理指标。

关 键 词:青榨槭(Acerdavidii  Franch.)  相对电导率  低温半致死温度  抗寒性
文章编号:1000-1573(2006)04-0044-04
收稿时间:2005-12-06
修稿时间:2005-12-06

Effects of low temperature on cold- resistance of David maple
JIAO Li-li,NI Zhi-yun,LU Bing-she,BAI Zhi-ying,ZHOU Ru-jiu,FENG Lei.Effects of low temperature on cold- resistance of David maple[J].Journal of Agricultural University of Hebei,2006,29(4):44-47.
Authors:JIAO Li-li  NI Zhi-yun  LU Bing-she  BAI Zhi-ying  ZHOU Ru-jiu  FENG Lei
Institution:1. College of Landscape Architecture and Tourism, Agricultural University of Hebei, Baoding 071000, China; 2. Forestry Bureau of Hebei Province, Shijiazhuang 050000, China; 3. Biology Department , Hengshui University, Hengshui 053000, China
Abstract:Under the low temperature treatments,the activities of SOD and POD,the content of Malondialdehyde(MDA) and the relative electrolyte leakage percentage of David maple's(Acer davidii) sticks were studied in the paper.It showed that the activities of SOD and POD in membrane increased early and decreased later;the content of MDA increased,and the relative electric conductivity increased as a S-curves with the temperature decreased.According to the Logistic equation,we could calculate the semi-lethal temperature(LT_(50)) for david maple's one-year stick was(-29.93)℃,which is in agreement with the recovery test result,which may be an important index of cold resistance in David maple.
Keywords:David maple  electrolyte leakage  semi-lethal temperature(LT_(50))  cold resistance
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