华北农学报 ›› 2009, Vol. 24 ›› Issue (3): 112-116. doi: 10.7668/hbnxb.2009.03.025

所属专题: 水稻

• 论文 • 上一篇    下一篇

硝酸镨对镉胁迫下水稻种子萌发的缓解效应

周国强1, 何俊瑜1, 任艳芳1, 杨良静1, 王阳阳1, 丁杰2   

  1. 1. 贵州大学农学院, 贵州贵阳 550025;
    2. 浙江万里学院生物与环境学院, 浙江宁波 315100
  • 收稿日期:2008-12-28 出版日期:2009-06-28
  • 通讯作者: 何俊瑜(1975 - ),男,山西河曲人, 副教授,博士,主要从事环境生理生态方面的研究。
  • 作者简介:周国强(1983-), 男, 湖南长沙人, 在读硕士, 主要从事重金属污染方面的研究.
  • 基金资助:
    贵州省自然科学基金(20D72058);贵州大学人才基金(X060036)

Alleviating Effects of pr3+ on the Cadmium Stress in Rice Seeds Germination

ZHoU Guo qiang1, HE Jun yu1, REN Yan fang1, YANG Liang jing1, WANG Yang yang1, DING Jie2   

  1. 1. College of Agronomy,Guizhou University,Guiyang 550025,China;
    2. Faculty of Biological and Environmental Sciences,Zhejiang Wanli University,Ningbo 315100,China
  • Received:2008-12-28 Published:2009-06-28

摘要: 以水稻为试验对象,研究不同浓度硝酸镨(Pr3+)对镉胁迫下水稻种子萌发的效应及其生理生化变化.结果表明,低浓度错处理能够促进镉胁迫下水稻种子的萌发状况,增加幼苗根质量和芽质量,增强超氧化物歧化酶和过氧化物酶活性并且降低了膜脂过氧化产物MDA含量,从而缓解了镉的毒害效应,其中以40 mg/L错处理效果最好.但随着镨浓度的增大,镨对镉胁迫的缓解效应逐渐减弱,当镨浓度达到200 mg/L时,加剧了镉对水稻幼苗的毒害,表现为协同效应.

关键词: 硝酸镨, 镉, 水稻, 萌发, 抗氧化酶

Abstract: An experiment with Neixiangyou No. 8518 rice seeds was carried out to study the effects of Pr on the seed germination and physiological and biochemical changesof the seedlings under cadmium stress. The results showed that low Pr concentration,specially for 40 mg/L Pr,was beneficial to alleviate the harmful effects of Cd stress on germination and seeding,which promoted seed germination,increased the weight of seedlings and the activitiesof SOD and G 2POD,and re2 duced the MDA content. However,the alleviated actionsof Pr to Cd faded away with the advancement of Pr concentration. When the concentration of Pr came to 200 mg/L,the Pr cooperated with the Cd to aggravate the poisoning action of the rice seedling.

Key words: Praseodymium nitrate, Cadmium, Rice, Germination, Antioxidative enzyme

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引用本文

周国强, 何俊瑜, 任艳芳, 杨良静, 王阳阳, 丁杰. 硝酸镨对镉胁迫下水稻种子萌发的缓解效应[J]. 华北农学报, 2009, 24(3): 112-116. doi: 10.7668/hbnxb.2009.03.025.

ZHoU Guo qiang, HE Jun yu, REN Yan fang, YANG Liang jing, WANG Yang yang, DING Jie. Alleviating Effects of pr3+ on the Cadmium Stress in Rice Seeds Germination[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(3): 112-116. doi: 10.7668/hbnxb.2009.03.025.

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