]*>","")" /> Influence of NaCl Stress and Cd2+ on Germination and Growth of Cucumber and Tomato

• Article • Previous Articles     Next Articles

Influence of NaCl Stress and Cd2+ on Germination and Growth of Cucumber and Tomato

LIU Yun-hua;ZHENG Chun-xia;JIANG Ping-an   

  • Received:2007-04-25 Revised:2007-04-25 Online:2007-04-25 Published:2007-04-25

NaCl胁迫及Cd2+对黄瓜和番茄种子发芽及生长的影响

刘耘华;郑春霞;蒋平安   

  1. 新疆农业大学资源环境学院,乌鲁木齐,830052

摘要: 针对NaCl胁迫黄瓜、番茄种子萌发的影响及在170 mmol/L NaCl胁迫下,不同浓度外源Cd 2+ 对黄瓜、番茄种子发芽的影响进行实验.其结果是,NaCl浓度在30~170 mmol/L时,对番茄和黄瓜种子发芽率、发芽指数影响不明显.在NaCl浓度170 mmol/L时,黄瓜的4项发芽指标均达到最高.在240 mmol/L NaCl胁迫下,黄瓜、番茄种子4项发芽指标值均显著下降.170 mmol/L NaCl胁迫下,当Cd 2+ 浓度在10 mmol/L时,能够提高黄瓜发芽率,促进黄瓜芽与幼苗的生长;当Cd 2+ 浓度达到50 mmol/L时,抑制幼根生长;外源Cd 2+ 对番茄的影响较大,当Cd 2+ 浓度为10 mmol/L时,活力指数为0;当Cd2+浓度为20 mmol/L时,发芽率为20;,侧根数全部为0.