南京林业大学学报(自然科学版) ›› 2015, Vol. 39 ›› Issue (06): 51-55.doi: 10.3969/j.issn.1000-2006.2015.05.010
鲁 路1,张景波2,陈金慧1,周艳威1,成铁龙1*
出版日期:
2015-11-30
发布日期:
2015-11-30
基金资助:
LU Lu1, ZHANG Jingbo2, CHEN Jinhui1, ZHOU Yanwei1, CHENG Tielong1*
Online:
2015-11-30
Published:
2015-11-30
摘要: 为研究澳大利亚荒漠植物比拉底白刺的抗旱性,以比拉底白刺幼苗作为研究材料,在100 mmol/L甘露醇溶液模拟干旱的环境下,观察了植物形态变化,测定了植物的相对含水量(relative water content,RWC)、过氧化物酶活性(peroxidase,POD)、丙二醛(malondiadehyde,MDA)以及游离脯氨酸(proline,Pro)含量的动态变化。结果表明,干旱处理过程中,比拉底白刺叶片从基部往上逐渐萎蔫变黄,推测其通过保护顶芽的生命力以适应干旱环境; 相对含水量前期相对稳定,后逐渐下降; POD活性先缓慢升高,后快速上升; 游离Pro浓度总体呈上升趋势; MDA含量先升后降。差异显著性分析表明,与对照相比,POD和游离Pro的变化趋势与对照组相比差异显著,说明二者与比拉底白刺的抗旱性具有相关性,通过减少质膜过氧化保护细胞完整性; MDA含量变化不明显,可能由于POD和游离脯氨酸的作用使得白刺细胞的膜脂系统未遭受活性氧自由基的强烈攻击。
中图分类号:
鲁路,张景波,陈金慧,等. 比拉底白刺苗期抗旱性分析[J]. 南京林业大学学报(自然科学版), 2015, 39(06): 51-55.
LU Lu, ZHANG Jingbo, CHEN Jinhui, ZHOU Yanwei, CHENG Tielong. Drought resistance analysis of Nitraria billardieri seedlings[J].Journal of Nanjing Forestry University (Natural Science Edition), 2015, 39(06): 51-55.DOI: 10.3969/j.issn.1000-2006.2015.05.010.
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