|本期目录/Table of Contents|

[1]王小山,朱平华,鲍国成,等.盐碱胁迫对紫花苜蓿根、茎和叶重要养分离子平衡的影响[J].江苏农业科学,2013,41(07):190-195.
 Wang Xiaoshan,et al.Effect of salt stress on important nutrient ion balance in roots,stems and leaves of Medicago sativa[J].Jiangsu Agricultural Sciences,2013,41(07):190-195.
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盐碱胁迫对紫花苜蓿根、茎和叶重要养分离子平衡的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第41卷
期数:
2013年07期
页码:
190-195
栏目:
畜牧兽医
出版日期:
2013-07-25

文章信息/Info

Title:
Effect of salt stress on important nutrient ion balance in roots,stems and leaves of Medicago sativa
作者:
王小山12 朱平华2 鲍国成2 顾洪如1
1.江苏省农业科学院畜牧研究所,江苏南京 210014; 2.扬州大学动物科学与技术学院,江苏扬州 225009
Author(s):
Wang Xiaoshanet al
关键词:
紫花苜蓿盐碱胁迫养分离子中性盐碱性盐
Keywords:
-
分类号:
S541+.101
DOI:
-
文献标志码:
A
摘要:
为了研究中性和碱性盐胁迫对紫花苜蓿植株根、茎、叶重要养分离子分配的影响,以高耐盐紫花苜蓿品种中苜1号为试材,进行水培试验。试验设计NaCl和Na2SO4(中性盐)、NaHCO3和Na2CO3(碱性盐)各按物质的量的比 9 ∶1 配制成混合盐溶液。3个盐处理Na+浓度分别为50、100、150 mmol/L,每个处理重复3次。盐处理15 d后,进行紫花苜蓿根、茎、叶的Na+、K+、Ca2+、Mg2+、Al3+、Fe3+、Mn2+、Cu2+、 Zn2+等离子含量的测定。结果表明,碱性盐处理的紫花苜蓿根、茎Na+含量显著高于中性盐处理。中性盐处理的紫花苜蓿幼苗叶和根中K+含量高于碱性盐处理,碱性盐处理的Na+/K+值高于中性盐处理。碱性盐胁迫降低了根向茎叶中运输Ca2+的能力。碱性盐胁迫的Na+/Mg2+比值高于中性盐胁迫,碱性盐胁迫抑制根对Al3+的吸收,但对其向茎和叶中运输则影响不大。碱性盐处理的茎Fe3+含量要显著高于中性盐处理,中性盐处理随着Na+浓度的升高Fe3+含量降低,而碱性盐胁迫下,随着Na+浓度的升高,Fe3+元素含量显著升高。中性盐抑制根对Mn2+的吸收,而在低和中等盐浓度胁迫下,碱性盐对根吸收Mn2+有显著的促进作用。碱性盐胁迫对叶片Cu2+的积累有促进作用,也促进紫花苜蓿根对Cu2+的吸收,而中性盐处理对紫花苜蓿根对Cu2+的吸收有抑制作用。本研究结果表明,混合碱性盐胁迫弱化了紫花苜蓿对Na+吸收与运输的控制,增强了Na+的毒害,中性、碱性混合盐胁迫条件下,重要养分离子在苜蓿植株根、茎、叶中的含量存在差异。进一步说明紫花苜蓿对中性和碱性盐胁迫的适应机制不同,这可能与溶液高pH值和高浓度的碳酸根存在有关。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2012-11-12
基金项目:国家科技支撑计划(编号:2011BAD17B03);江苏省农业生物学重点实验室开放课题(编号:026044910610);江苏高校优势学科建设工程资助项目;扬州大学创新培育基金(编号:2011CXJ061)。
作者简介:王小山(1974—),河北承德人,博士,讲师,主要从事牧草种质资源与育种研究。E-mail:wanggrass@tom.com。
通信作者:顾洪如,研究员,主要从事牧草栽培与育种研究。Tel:(025)84391223。
更新日期/Last Update: 2013-07-25