[1]郑蕾,郭露露,金涛,等.两种pH值镧溶液浸种对模拟酸雨胁迫下油菜种子萌发和幼苗生长的影响[J].北方园艺,2014,38(15):13-16.
　ZHENG Lei,GUO Lu-lu,JIN Tao,et al.Effect of LaCl3 Solutions With Two pH Treatment on Brassica campestris-Seed Germination and Seedling Growth Under Simulated Acid Rain Stress[J].Northern Horticulture,2014,38(15):13-16.
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两种pH值镧溶液浸种对模拟酸雨胁迫下油菜种子萌发和幼苗生长的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第38卷 期数: 2014年15期 页码: 13-16 栏目: 出版日期: 2014-08-15
Title:
Effect of LaCl3 Solutions With Two pH Treatment on Brassica campestris-Seed Germination and Seedling Growth Under Simulated Acid Rain Stress
文章编号:
1001-0009(2014)15-0013-04
作者:
郑蕾; 郭露露; 金涛; 张孟雅; 夏利琴; 边才苗
台州学院 生命科学学院，浙江 椒江 318000
Author(s):
ZHENG Lei; GUO Lu-lu; JIN Tao; ZHANG Meng-ya; XIA Li-qin; BIAN Cai-miao
School of Life Sciences,Taizhou University,Jiaojiang,Zhejiang 318000
关键词:
氯化镧; pH; 油菜; 种子萌发; 幼苗生长
Keywords:
LaCl3; pH; Brassica campestris L.; seed germination; seedling growth
分类号:
S794.4
文献标志码:
A
摘要:
以“浙双72”油菜种子为试材，研究了2种pH值氯化镧（LaCl3）溶液浸种对模拟酸雨胁迫下（pH 3.5）油菜种子萌发与幼苗生长的影响。结果表明：用pH 6.5 LaCl3溶液浸种，对油菜种子萌发和幼苗生长均有促进作用，且10 mg/L LaCl3浸种能显著缓解pH 3.5酸雨胁迫的影响；用pH 4.5 LaCl3溶液浸种，只有1 mg/L LaCl3浸种有明显的正向效应，而5、10 mg/L LaCl3浸种多为负面效应，表现为种子萌发和幼苗生长不及对照，过氧化物酶（POD）活性比对照稍高，丙二醛（MDA）含量也比对照高，可能是低pH值溶液中，镧元素的离子态增加，毒性也增强；因此，用LaCl3溶液浸种，必须选择适宜的剂量，还须控制浸种溶液的pH值。
Abstract:
Taking ‘Zheshuang 72’Brassica campestris as materials,the effect of LaCl3 solutions with two pH treatments on the seed germination and seedling growth of Brassica campestris were investigated under simulated acid rain stress(AR) of pH 3.5.The results showed that,under the LaCl3 treatment of pH 6.5,the positive effect were found in any of LaCl3 treatments.And B.campestris seed germination under 10 mg/L LaCl3 treatment significantly improved compared with those in the single AR stress,and the seedling growth as well.However,under the LaCl3 treatment of pH 4.5,only the 1 mg/L LaCl3 had positive effect,while 5 mg/L and 10 mg/L LaCl3 had negative effect.Compared with the control treatment,B.campestris had lower seed germination and seedling growth,high POD activities and high MDA contents,which may be the reason that the accumulation of La and high toxicity of La under the low pH conditions.Results suggested that it was necessary to select an appropriate doseage and pH to make LaCl3 treatment had a positive effect.

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备注/Memo

第一作者简介：郑蕾（1991-），女，浙江杭州人，本科，研究方向为作物抗逆性。

责任作者：边才苗（1963-），男，浙江诸暨人，副教授，现主要从事植物生态学和作物抗逆性等研究工作。E-mail：bcm@tzc.edu.cn.
基金项目：浙江省自然科学基金资助项目(Y507053）；台州学院学生科研资助项目。

更新日期/Last Update: 2014-09-19