| 徐健程1，2，黄海裙1，2，张源生3，王晓维1，许冬华3，黄国勤1.干旱胁迫和复水对金沙柚生理变化的影响[J].广东农业科学,2015,42(16):12-17 |
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干旱胁迫和复水对金沙柚生理变化的影响 |
| Effects of drought stress and rehydration on physiologicaland physiochemical changes of Jinshayou |
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| DOI： |
| 中文关键词: 金沙柚 干旱胁迫 复水 抗氧化酶 |
| 英文关键词: Jinshayou drought stress rehydration antioxidases |
| 基金项目:江西省高校科技落地计划项目（K J L D
13067） |
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| 摘要点击次数: 1788 |
| 全文下载次数: 755 |
| 中文摘要: |
| 通过盆栽试验，设置3 个干旱胁迫处理（对照、轻度胁迫、重度胁迫），研究干旱胁迫和复水对金
沙柚叶片抗氧化酶活性及丙二醛（MDA）含量等生理指标的影响。结果表明：干旱胁迫下，随着干旱胁迫程度
的加强，超氧化物歧化酶（SOD）活性提高，过氧化氢酶（CAT）活性降低，MDA、脯氨酸、可溶性蛋白、可溶
性糖的合成加快，叶片相对含水量降低。复水20 d 后，SOD、POD 活性及可溶性糖含量先上升后下降，脯氨酸
含量、可溶性蛋白含量、叶片相对含水量和CAT 活性与干旱胁迫表现一致，而MDA 含量则先下降后上升。各
处理下生理指标均随着试验时间推移产生一定程度变化。各生理指标通过协同作用，为金沙柚应对干旱及旱
涝急转环境变化起到保护作用。 |
| 英文摘要: |
| Pot experiments were carried out to study the effects of drought stress（light drought stress，heavy
drought stress）and rehydration on the activities of superoxide dismutase（SOD），catalase（CAT），peroxidase
（POD），the content of malondialdehyde（MDA）and so on. The results showed that，with the drought stress level
strengthening，the activity of SOD，the synthesis of MDA，soluble sugar content increased，the activity of CAT and
leaf relative water content reduced. 20 days after rehydration SOD activity，POD activity and soluble protein content
decreased after an initial increasing；proline content，soluble protein，leaf relative water were consistent with the
degree of drought stress，while the MDA content decreased at first and then increased. Each physiological and
physiochemical index played a protective role in Jinshayou’s response to the dramatic change of drought and flood
environment. |
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