摘要：本文采用沙培法，研究了不同浓度的Nacl对荷兰豆幼苗生长的影响，如根长、株长干重、鲜重、组织含水量、叶绿素、脯氨酸与丙二醛含量的变化情况。结果表明：不同盐浓度对植物的生长发育起着不同的作用。随着盐浓度的升高抑制着荷兰豆的生长发育，干重、鲜重和组织含水量呈下降趋势。植株叶绿素含量因受到盐胁迫而受到影响，如在50mg·L－1、200mg·L－1时分别为对照的89%、54%。植株丙二醛含量随着盐浓度的增加而呈上升趋势，此时在盐浓度50mg·L－1、200mg·L－1时，分别为对照组的113%和201%。脯氨酸含量随着盐浓度的增加而呈上升趋势。
关键词：荷兰豆幼苗；盐； 胁迫
Abctract: This paper uses sand culture method to study the effects on growth of sweetpea seedlings with treatments of different concentrations of Nacl,such as changes of the root length, plant height, fresh weight, dry weight, content of tissue water and content of chlorophyll，Pro and MDA. The results show that: different concentrations of salt on growth and development of sweetpea seedlings play differents roles. With the increased of concentrations, growth of sweetpeas was inhibited, and sweetpeas’fresh weight, dry weight and water content decreased. Content of tissue water also decreased go with the concentrations of salt increasing. Sweetpea seedlings’ chlorophyll content were affected under salt stresses, and chlorophyll content are respectively 89%,54% with the comparison of the control groups under treatments of concentrations of 50mg·L-1,200mg·L-1. Content of MDA increased go with the concentrations of salt rising, and contents of MDA are respectively 113%,201% with the comparison of the control groups under treatments of concentrations of 50mg·L-1,200mg·L-1. Content of Proline increased go with the concentrations of salt rising.
Key words: SweetPea Seedlings; Salt; Stress
