| 盐碱胁迫对野生地肤种子发芽和幼苗生长的影响 |
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| 引用本文： | 张慧蓉,张建伟,张兆沛,吴金祥.盐碱胁迫对野生地肤种子发芽和幼苗生长的影响[J].种子,2010,29(1). |
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| 作者姓名： | 张慧蓉 张建伟 张兆沛 吴金祥 |
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| 作者单位： | 河南科技学院,河南,新乡,453003 |
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| 基金项目： | 河南省自然科学基金项目"设施主要蔬菜耐盐性研究" |
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| 摘 要： | 将中性盐NaCl、Na2SO4和NaHCO3、Na2CO3两种碱性盐按不同比例混合,模拟出30种与天然盐碱土壤相似的条件,进行野生地肤种子发芽试验和幼苗生长情况检测等7项指标,结果表明:在混合盐碱胁迫作用下,地肤种子发芽受到明显抑制,发芽率、发芽势、发芽指数等指标呈下降趋势,并随盐碱度递增,下降程度逐渐增大,高盐高碱效应较单独高盐或高碱作用大;幼苗存活率和相对含水量在不同处理组间均呈下降趋势,而MDA和可溶性糖含量则随着盐碱度的升高逐渐上升,其中可溶性糖含量在低盐浓度(50、100 mmol/L)或低pH条件下,增加幅度小于高盐浓度(200、250 mmol/L)或高pH,两者具有明显的协同作用。
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| 关 键 词： | 野生地肤 盐碱胁迫 发芽指标 丙二醛 可溶性糖 |
Effects of Saline-Alkali Stress on Seed Germination and Seedling Growth of Wild Wancomponents(Kochia scoparia(L.) Schrad) |
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| ZHANG Hui-rong,ZHANG Jian-wei,ZHANG Zhao-pei,WU Jin-xiang.Effects of Saline-Alkali Stress on Seed Germination and Seedling Growth of Wild Wancomponents(Kochia scoparia(L.) Schrad)[J].Seed,2010,29(1). |
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| Authors: | ZHANG Hui-rong ZHANG Jian-wei ZHANG Zhao-pei WU Jin-xiang |
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| Institution: | ZHANG Hui-rong,ZHANG Jian-wei,ZHANG Zhao-pei,WU Jin-xiang(Henan Institute of Science , Technology,Xinxiang,He\'nan 453000,China) |
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| Abstract: | The seeds of wild wancomponents(Kochia scoparia(L) Schrad) were tested under 30 kinds of mixed salt solutions composed of NaCl,Na2SO4,NaHCO3,Na2CO3 at different proportions of salinity and alkalinity similar to natural saline-alkali soil.Seven indexes such as germination rate were determined.The results showed that the germination capability of wild wancomponents seeds was restrained obviously under complex saline-alkali stress.Complex saline-alkali stress decreased germination rate,germination energy and g... |
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| Keywords: | wild wancomponents salt-alkali stress germination capacibihy MDA soluble sugar |
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