干旱地区农业研究Issue(4)：206-211,6.DOI:10.7606/j.issn.1000-7601.2015.04.31
水分胁迫下不同抗旱类型胡麻苗期生理生化指标变化
Physiological and biochemical characteristics of drought resistance for oil flax at seedling stage under water stress
摘要
Abstract
This article reports the influence of water on oil flax leaf relative water content (RWC ) ,activity of cata-lase (CAT ) and peroxidase (POD ) , content of lipid peroxidation products malondialdehyde (MDA ) and free proline (Pro ) at the seedling stage ,using pot experiments with three water treatments .The results showed that the RWC of dif-ferent drought resistance varieties have different degrees of reduction .Under the moderate and severe water stress ,the average RWC decreased by 4 .36% and 13 .74% compared with CK ,the average RWC of drought-resistant and drought-sensitive varieties respectively decreased by 7 .67% and 10 .42% compared with CK ,the deought-resistant varieties de-creased less;and the average CAT and POD activity of drought-resistant varieties increased by 12 .46% ,15 .14% and 65 .01% , 156 .01% , respectively . The CAT and POD activity enhanced with the increasing of the stress , but the drought-sensitive varieties increased by 46 .84% ,29 .85% and 58 .73% ,38 .20% compared with CK ;it appears in-creasing at first and then decreasing .The content of MDA increased with the increasing of the stress ,while that of drought-resistant had a smaller increase (2 .99% ) than that of drought-sensitive .The content of Pro increased with the increasing of the water stress ,and the drought-resistant varieties had a higher accumulation of the proline ;average in-crease 108 .64% compared with CK .Overall ,RWC and Pro content can be regarded as physiological and biochemical indexes of drought resistance for oil flax at seedling stage .关键词
胡麻/水分胁迫/苗期/生理生化指标Key words
oil flax/water stress/seedling stage/physiological and biochemical characteristics分类
农业科技引用本文复制引用
赵利,党占海,牛俊义,张建平,王利民,赵玮,党照..水分胁迫下不同抗旱类型胡麻苗期生理生化指标变化[J].干旱地区农业研究,2015,(4):206-211,6.基金项目
国家科技支撑计划项目（2009ADA804）；兰州市人才创新创业科技计划项目 （）
