[1]初江涛,王进鑫,邹朋,等. 干旱和铅胁迫对生长初期的国槐和侧柏叶绿素的影响[J].西北林学院学报,2012,27(04):19-23.
　CHU Jiang-tao,WANG Jin-xin,ZOU Peng,et al. Effects of Drought and Pb Stress on the Contents of Chlorophylls of Sophor japonica and Platycladus orientalis in Their Initial Growth Stages[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(04):19-23.
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 干旱和铅胁迫对生长初期的国槐和侧柏叶绿素的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第27卷
期数:
2012年04期
页码:
19-23
栏目:
出版日期:
2012-07-30

文章信息/Info

Title:
 Effects of Drought and Pb Stress on the Contents of Chlorophylls of Sophor japonica and Platycladus orientalis in Their Initial Growth Stages
文章编号:
1001-7461(2012)04-0019-05
作者:
 初江涛; 王进鑫; 邹朋; 张青
 （西北农林科技大学 资源环境学院，陕西 杨陵 712100）
Author(s):
 CHU Jiang-tao; WANG Jin-xin;  ZOU Peng;  ZHANG Qing
 (College of Resources and Environment, Northwest A&F University,Yangling, Shaanxi 712100, China)
关键词:
 ; 国槐; 侧柏; 叶绿素; 铅胁迫; 水分胁迫
Keywords:
 ; Sophora japonica;  Platycladus orientalis;  chlorophyll;  Pb stress;  drought stress
分类号:
S718.43
文献标志码:
A
摘要:
 以长势一致的1年生国槐和侧柏幼苗为供试材料，采用盆栽控水试验，测定不同水分条件下（土壤相对含水量分别为田间持水量的100%、80%、60%、40%）和铅胁迫下（土壤铅含量为0、300、500、1 000、2 000、4 000、6 000、8 000、10 000、12 000 mg·kg-1）国槐和侧柏叶绿素含量和叶绿素a/b的变化。结果表明：在生长初期铅胁迫下的国槐和侧柏的叶绿素含量总体呈下降趋势，中间有一个波峰，分别出现在4 000和1 000 mg·kg-1，国槐叶绿素含量下降的幅度大于侧柏的；水分胁迫下国槐叶绿素含量成下降趋势，侧柏略有上升；干旱和铅双重胁迫下土壤相对含水量为40%土壤铅含量为500 mg·kg-1的国槐全部死亡，叶绿素a/b呈下降趋势且波动较大，而侧柏无一死亡，波动幅度较小；土壤相对含水量为100%，60%和40%时侧柏叶绿素a/b的值随铅含量变化不大且一直高于国槐。国槐和侧柏叶绿素含量对干旱和铅胁迫有一个适应和自我补偿机制，表现为低浓度的促进和高浓度的抑制；在生长初期国槐较之侧柏对铅更敏感，水分比铅对两种植物的影响更大，侧柏比国槐的耐旱性和抗铅性更强。

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