生态学杂志2011，Vol.30Issue(8)：1654-1661,8.
NaCl胁迫对玉米幼苗不同器官离子含量的影响
Effects of NaCI stress on ion contents in different organs of maize(Zea mays L.)seedlings
摘要
Abstract
A water culture experiment was conducted to study the changes of Na＋ , K＋, Ca2＋ , Mg2＋ , and Cl- contents in different organs of maize seedlings under NaCl stress. With increasing concentration of NaCl in the medium, the Na＋ and Cl- contents and Na＋/K＋ and Na＋/Ca2＋ ratios in different organs of maize seedlings increased rapidly, and the change extent of the Na＋ , K＋ , and Cl- contents was in the order of root ＞ mature sheath ＞ young blade ＞ mature blade, suggesting that maize seedling’ s root was most easily affected by environment ion concentration, while blade was less affected. Under NaCl stress, the Ca2＋ and Mg2＋ contents in seedling ’ s root decreased while those in mature blade increased, but the Mg2＋ content in mature blade sheath had no obvious change. The seedlings had Na＋-exclusion mechanism, presenting definite salt-tolerance. The Na＋ was mainly accumulated in root and mature blade sheath, and less transported to mature and young blades. The mature blade sheath also had Cl- exclusion capability.关键词
NaCl胁迫/玉米幼苗/离子含量Key words
NaCl stress/ maize ( Zea mays L. ) seedling/ ion content.分类
农业科技引用本文复制引用
王玉凤,薛盈文,杨克军,王庆祥..NaCl胁迫对玉米幼苗不同器官离子含量的影响[J].生态学杂志,2011,30(8):1654-1661,8.基金项目
教育部高等学校博士学科点专项科研基金新教师类(20102305120002)资助. （20102305120002）
