| 水分胁迫下甘薯的生理变化与抗旱性的关系 |
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| 引用本文： | 张明生,谈锋.水分胁迫下甘薯的生理变化与抗旱性的关系[J].杂粮作物,1999,19(2):35-39. |
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| 作者姓名： | 张明生 谈锋 |
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| 作者单位： | 西南师范大学生命科学学院 |
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| 摘 要： | 用不同浓度的ＰＥＧ对甘薯进行了根际水分胁迫处理，研究叶片相对含水量（ＲＷＣ），丙二醛（ＭＤＡ）含量，超氧物歧化酶（ＳＯＤ）活性及游离脯氨酸（Ｐｒｏ）含量的变化与品种抗旱性的关系。结果表明，在一定范围内，随着水分胁迫的加剧，甘薯叶片ＲＷＣ逐渐降低，ＭＤＡ含量ＳＯＤ活性及Ｐｒｏ含量逐渐升高。水分胁迫下生理指标的变化与品种抗旱性间有较好的一致关系。
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| 关 键 词： | 甘薯 水分胁迫 抗旱性 生理指标 相关系数 |
Relationship Between Physiological Changes of Sweet Potato under Water Stress and
Drought Resistant Ability |
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| Zhang,MingshengTan,Feng,Zhang,Qitang.Relationship Between Physiological Changes of Sweet Potato under Water Stress and
Drought Resistant Ability[J].Rain Fed Crops,1999,19(2):35-39. |
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| Authors: | Zhang MingshengTan Feng Zhang Qitang |
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| Abstract: | The relationship
between the changes of relative water content (RWC),malondialdehyde(MDA)
contents,superoxide dismutase(SOD)activity and free proline contents in sweet potato
leaves,and drought resistant ability under different concentration of polyethylene glycol
treatment to drought rhizosphere of sweet potato were studied.The results showed that
RWC decreased gradually, and MDA contents and SOD activity and free proline contents
increased in the leaves when water deficit increased more markedly within limits. The
changes under water stress on physiological indices consisted with drought resistant
ability of different varieties. |
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| Keywords: | sweet potatowater stressdrought resistancephysiological indicescorrelation coefficient |
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