Effect of Salt Stress on the Content of K⁺,Na⁺,Cl^- and Variations of Ultra Structures in Roots of Two Species of Amygdalus communis L.(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年23期

Page:

1-5

Research Field:

Publishing date:

Info

Title:

Effect of Salt Stress on the Content of K⁺,Na⁺,Cl^- and Variations of Ultra Structures in Roots of Two Species of Amygdalus communis L.

Author(s):

HOU Jiang-tao¹; GAO Qi-ming²; KARIM·Ali³

1.College of Landscape Architecture,Shangqiu College,Shangqiu,Henan 476000；

2.Zhengzhou Fruit Research Institute,Chinese Academy of Agricultural Sciences,Zhengzhou,Henan 450009；

3.Department of Horticulture,Xinjiang Agricultural University,Urumqi,Xinjiang 830052

Keywords:

almond; salt stress; contributions of inorganic ions; ulstrastructure

PACS:

S 662.906+.2

DOI:

-

Abstract:

Taking Amygdalus communis L.and A.commans var. persicoides as test materials.The two species were grew in pots to study the effect of salt stress on content of K⁺,Na⁺,Cl^- and on variations of ultra structures in roots.The objective was to show the differences of salt tolerance between the two species.The results showed that,the content of Na+ and Cl^- in roots of the two species were increased as the concentration of NaCl increased with time longer,and the growth of the content of Na⁺ and Cl^- in roots of Amygdalus communis L. was higher than that of A.commans var. persicoides.As the concentration of NaCl increased,the content of K+ in roots of the two species was decreased,the content of K⁺ in A.commans var.persicoides was higher than that of Amygdalus communis L..The ratio of Na⁺ to K⁺ in both two species were increased as the concentration of NaCl increased.The ratio of Na⁺ to K⁺ in roots was lower in A.commans var. persicoides than that in Amygdalus communis L.under salt stress.Under salt stress,the nuclear membrane in roots of two species was not clear,and many big vacuoles appeared in cells while many starch grains appeared in ducts of roots.The content of Na⁺ and Cl^- in roots of the two species was increased,the nuclear membrane in roots of two species was not clear and catheter distorted seriously,which indicated ion breaking,but there was not noticeable plasmolysis and didn’t clearly indicate osmotic stress.The ratio of Na⁺ to K⁺ was lower in root organizations of A.commans var. persicoides than that in Amygdalus communis L.,which showed no serious damage and indicated strong salt-resistant ability.

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