| 钙对水分胁迫条件下玉米幼苗内源激素含量的影响 |
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| 引用本文： | 史吉平,李广敏.钙对水分胁迫条件下玉米幼苗内源激素含量的影响[J].河北农业大学学报,1994,17(3):48-51. |
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| 作者姓名： | 史吉平 李广敏 |
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| 作者单位： | 河北农业大学农学系 |
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| 摘 要： | 利用─１．０ＭＰａ的ＰＥＧ—６０００溶液模拟水分胁迫，研究了１０ｍｍｏｌ／Ｌ的ＣａＣｌ２。溶液（以纯Ｃａ２＋计）浸种对玉米幼苗内源激素含量的影响。结果表明，随着水分胁迫时间的延长，未用钙处理的玉米幼苗生长素（ＩＡＡ）含量从２２５ｎｇ／ｇ·ＤＷ降至１４２ｎｇ／ｇ·ＤＷ，ＧＡ３含量从２２３降至１３２，ｉｐＡ含量从１８９降至８３，而ＡＢＡ含量则从６５５升至１８７５．钙处理可以促进ＩＡＡ、ＧＡ３和ｉｐＡ含量的下降，但抑制ＡＢＡ含量的升高。钙还可抑制膜相对透性的增大及叶片相对含水量的下降，表明钙可以提高植物的抗旱性，且植物抗旱性的提高与内源激素含量的变化有一定关系。
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| 关 键 词： | 玉米，氯化钙，水分胁迫，内源激素，抗旱性 |
The Effect of Ca￣(2+)on Endogenous Hormones of Maize Seedlings Under Water Stress |
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| Shi Jiping,Li Guangmin, Chi Shumin.The Effect of Ca￣(2+)on Endogenous Hormones of Maize Seedlings Under Water Stress[J].Journal of Agricultural University of Hebei,1994,17(3):48-51. |
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| Authors: | Shi Jiping Li Guangmin Chi Shumin |
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| Abstract: | The effect of Ca2+ and water stress induced by polyethylene giycoi (PEG6000)on endogenous hormone contents of Maize Seedlings was studied. The results showed that with the duration of water stress IAA content declinde from 225 ng/g.DW to 142, with the content of GA3 reducing from 223 to 132 and ipA from 189 to 83,while ABA content increased from 655 to 1875. The treatment with Ca2+ could promote the reduce of IAA, GA3 and ipA while it inhibited the increase of ABA.It implied that Ca2+ can enhance the drought resistance of Maize seedlings.And there was a certain relation between the increase of drought resistance and the change of endogenous hormone. |
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| Keywords: | CaCl_2 maize water stress endogenous hormone drought resistance |
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