| NaCl胁迫对棉花种子萌发和幼苗生长的伤害 |
| |
| 引用本文： | 孙小芳,郑青松,刘友良.NaCl胁迫对棉花种子萌发和幼苗生长的伤害[J].植物资源与环境学报,2000,9(3):22-25. |
| |
| 作者姓名： | 孙小芳 郑青松 刘友良 |
| |
| 作者单位： | 南京农业大学农业部作物生长调控重点实验室,南京,210095 |
| |
| 基金项目： | 江苏省自然科学基金资助项目(BK97091) |
| |
| 摘 要： | 采用盐化土壤盆栽方法，选择耐盐性较强品种枝棉３号和耐盐性较弱品种泗棉２号，研究了盐分对棉花（Ｇｏｓｓｙｐｉｕｍ ｈｉｒｓｕｔｕｍ Ｌ．）种子萌发、出苗和幼苗生长的伤害。结果表明，在－０．５５和－１．１０ＭＰａ盐分胁迫下，对棉花伤害起决定性作用的因子是Ｎａ＾＋。２００ｍｍｏｌ／Ｌ ＮａＣｌ胁迫下，枝棉３号种子萌发时电导率上升幅度和子叶ＣＡＴ下降幅度均显著小于泗棉２号。１００和２００ｍｍｏｌ／Ｌ Ｎａ
|
| 关 键 词： | 棉花 NaCl胁迫 伤害 种子萌发 幼苗生长 |
| 文章编号： | 1004-0978(2000)03-0022-04 |
| 修稿时间： | 2000年5月8日 |
Salinity injury to germination and growth of cotton (Gossypium hirsutum L. ) at emergence and seedling stages |
| |
| SUN Xiao-fang,ZHENG Qing-song,LIU You-liang.Salinity injury to germination and growth of cotton (Gossypium hirsutum L. ) at emergence and seedling stages[J].Journal of Plant Resources and Environment,2000,9(3):22-25. |
| |
| Authors: | SUN Xiao-fang ZHENG Qing-song LIU You-liang |
| |
| Abstract: | Two cotton (\%Gossypium hirsutum \%L.) cultivars Zhimian 3 (salt\|tolerant) and Simian 2 (salt\|sensitive) were selected for researching the mechanism of injury to cotton at emergence and seedling stages by soil pot\|culture under NaCl stress. The results showed that it was Na\ \{ \}which played the decisive role in the injury under -0.55 and -1.10 MPa of NaCl stresses. The range of electrolytic conductivity increment and CAT activity decrement in cotyledon of Zhimian 3 was significantly lower than that of Simian 2 at the germination stage under 200 mmol/L NaCl stress; and so were the contents of H\-\{2\}O\-\{2\}and MDA in functional leaf of seedlings in Zhimian 3 under 100, 200 mmol/L NaCl stresses. |
| |
| Keywords: | Gossypium hirsutum \%L NaCl stress injury CAT activity H\-\{2\}O\-\{2\} MDA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
