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草业学报 ›› 2014, Vol. 23 ›› Issue (2): 189-195.DOI: 10.11686/cyxb20140223

• 研究论文 • 上一篇    下一篇

外源植物激素对NaCl胁迫下苦马豆苗期脯氨酸代谢的影响

王若梦,董宽虎*,李钰莹,李晨,杨静芳   

  1. 山西农业大学动物科技学院, 山西 太谷 030801
  • 收稿日期:2013-05-10 出版日期:2014-02-25 发布日期:2014-04-20
  • 通讯作者: E-mail:dongkuanhu@126.com
  • 作者简介:王若梦(1987-), 女,黑龙江绥化人, 在读硕士。E-mail:sunday_wong@126.com
  • 基金资助:
    教育部高等学校博士学科点专项科研基金项目(20101403110002),山西省科技攻关项目(20120311011-1)和山西省科技基础条件平台建设项目(2012091004-0101)资助。

Effects of applying exogenous plant hormone on praline metabolism of Swainsonia salsula seedlings under NaCl stress

WANG Ruo-meng, DONG Kuan-hu, LI Yu-ying, LI Chen, YANG Jing-fang   

  1. Shanxi Agricultural University, College of Animal Science and Veterinary Medicine, Taigu 030801, China
  • Received:2013-05-10 Online:2014-02-25 Published:2014-04-20

摘要: 以苦马豆为实验材料,在8种不同浓度NaCl (0, 80, 160, 240, 320, 400, 480和 560 mmol/L)胁迫下,分别向叶面喷施细胞分裂素类物质6-BA和脱落酸(ABA),通过2周的胁迫生长后,对其根冠比、脯氨酸以及脯氨酸代谢酶活性进行测定,进行外源植物激素对苦马豆耐盐性影响的研究,为进一步培育耐盐牧草提供一定的理论基础。结果表明,外源植物激素可以提高苦马豆的抗盐性,且根系中酶活性对植物激素的敏感程度大于叶片。植物激素6-BA比ABA的作用更为显著。外源植物激素使苦马豆幼苗中脯氨酸不再是抗逆性的主要检测指标。

Abstract: Swainsonia salsula seedlings were treated with cytokinin (6-BA) and abscisic acid (ABA) then subjected to eight salt treatments (0, 80, 160, 240, 320, 400, 480, 560 mmol/L of NaCl). Proline metabolism enzymes, root top ratio of leaves and roots of S. salsula were analyzed to study the effects of exogenous plant hormone on salinity tolerance after two weeks to provide a theoretical basis for cultivation of salt-tolerant forage. Exogenous plant hormone improved salinity to lerance of S. salsula. Under exogenous plant hormone treatment, roots were more sensitive to hormone treatment than leaves and the effect of 6-BA was more significant than that of ABA. After exposure to exogenous plant hormone, other indexes of stress resistance were reduced except Pro in S. salsula.

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