| 钙对低氧胁迫下黄瓜幼苗根系碳水化合物代谢的影响 |
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| 引用本文： | 胡晓辉,郭世荣,李璟,王素平.钙对低氧胁迫下黄瓜幼苗根系碳水化合物代谢的影响[J].计算机科学,2006(3):322-326. |
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| 作者姓名： | 胡晓辉 郭世荣 李璟 王素平 |
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| 作者单位： | 南京农业大学园艺学院 南京210095 |
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| 摘 要： | 以对低氧敏感的中农8号黄瓜品种为材料,研究了钙对低氧胁迫下幼苗根系淀粉、蔗糖、果糖、葡萄糖含量及蔗糖合酶(SS)、蔗糖转化酶(INV)、磷酸蔗糖合成酶(SPS)和葡萄糖激酶(GK)活性的影响。结果表明:与通气对照相比,低氧胁迫处理后幼苗根系淀粉含量降低,蔗糖和果糖含量增加,SS和GK活性增加,INV活性降低,胁迫初期SPS活性增加,后期降低;低氧胁迫下营养液加钙处理缓解了低氧胁迫对幼苗生长的抑制作用,根系SS、SPS、INV和GK活性增加,蔗糖和果糖含量显著高于单纯低氧胁迫处理,葡萄糖含量低于单纯低氧胁迫处理;而低氧胁迫下营养液缺钙处理加重了低氧胁迫对黄瓜幼苗的伤害。表明在低氧胁迫下,钙参与了调节黄瓜幼苗根系碳水化合物代谢,对提高幼苗低氧胁迫的适应性起着重要的作用。
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| 关 键 词： | 钙 低氧胁迫 黄瓜 碳水化合物代谢 |
Effects of Ca2+ on Carbohydrate Metabolism in Roots of Cucumber Seedlings under Hypoxia Stress |
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| HU Xiao-hui,GUO Shi-rong,LI Jing,Wang Su-ping.Effects of Ca2+ on Carbohydrate Metabolism in Roots of Cucumber Seedlings under Hypoxia Stress[J].Computer Science,2006(3):322-326. |
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| Authors: | HU Xiao-hui GUO Shi-rong LI Jing Wang Su-ping |
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| Affiliation: | College of Horticulture, Nanjing Agricultural University, Nanjing 210095,China |
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| Abstract: | The effects of Ca2 on carbohydrate metabolism in roots of cucumber(Cucumis sativus L.var.Zhongnong 8) seedlings were studied under hypoxia stress in a nutrient solution culture system.The results showed that starch content,INV activity in roots of cucumb |
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| Keywords: | calcium hypoxia stress cucumber(Cucumis sativus L) carbohydrate metabolism |
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