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草业学报 ›› 2013, Vol. 22 ›› Issue (2): 187-194.

• 研究论文 • 上一篇    下一篇

重金属及盐碱对二月兰幼苗生长和生理生化的影响

张小艾1,2,李名扬1*,汪志辉2,汤浩若2,张新全2,左静2   

  1. 1.西南大学园艺园林学院, 重庆 400716;
    2.四川农业大学园艺学院,四川 雅安 625014
  • 收稿日期:2012-06-04 出版日期:2013-02-25 发布日期:2013-04-20
  • 通讯作者: E-mail:871726615@qq.com
  • 作者简介:张小艾(1974-),女,四川雅安人,讲师,在读博士。E-mail:sonzxa@126.com
  • 基金资助:
    国家重点星火计划项目(2008GA810001)资助 。

Effects of heavy metals and saline-alkali on seedlings growth, physiological-biochemical of Oryehophragmus violaeeus

ZHANG Xiao-ai1,2, LI Ming-yang1, WANG Zhi-hui2, TANG Hao-ruo2, ZHANG Xin-quan2, ZUO Jing2   

  1. 1.College of Horticulture and Garden, Southwest University, Chongqing 400716, China;
    2.College of Horticulture, Sichuan Agricultural University, Ya’an 625014, China
  • Received:2012-06-04 Online:2013-02-25 Published:2013-04-20

摘要: 以二月兰为试验材料,研究了在不同浓度的盐碱和重金属胁迫下,二月兰幼苗生长和生理生化特性。结果表明,盐碱及重金属胁迫均会对二月兰幼苗的生长发育造成影响,MDA含量呈先降后升趋势,生物量随着胁迫的加重而减少,相对电导率、渗透物质可溶性糖含量和Pro含量均呈上升趋势,抗氧化酶POD活性、SOD活性明显高于对照,胁迫对叶片光合色素的合成具有一定的破坏作用,其中类胡萝卜素更敏感。轻度盐碱及Pb(500 mg/L)的复合胁迫下,MDA含量下降,叶绿素a、叶绿素b、类胡萝卜素高于对照,说明二月兰幼苗对轻度盐碱及Pb胁迫具有一定耐性,且叶片对于胁迫的耐性大于根部。

Abstract: The aim was to study on effects of heavy metals and saline-alkali on seedlings growth, physiological-biochemical of Oryehophragmus violaeeus. The results showed that relative electrolyte leakage, the content of soluble sugar and the content of Pro all increased with increased heavy metals and saline-alkali conditions, the total biomass decreased with increased heavy metals and saline-alkali conditions, but the content of MDA initially increased and then decreased. The activities of superoxide dismutase, peroxidase increased with increased heavy metals and saline-alkali conditions, and evidently higher than the control. The effect of heavy metals and saline-alkali stress on photosynthetic pigment content, in the leaf was assessed. With an increase in heavy metals and saline-alkali concentration, the chlorophyll and carotenoid contents decreased gradually, but the carotenoid contents decreased morn. The seedlings of O. violaeeus is with resistance against light combined stresses of salt-alkali and Pb (500 mg/L), and the stress patience of vane is greater than the root.

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