NaCl胁迫对兰州百合苗期生长和发育的影响

在温室条件下,对苗期的盆栽兰州百合进行不同浓度的NaCl(0,0.2%,0.4%,0.6%,0.8%NaCl水溶液)胁迫试验。结果表明:在胁迫的30 d时间内,NaCl胁迫造成兰州百合植株的生根数目减少,高度增长缓慢,花卉质量变劣。同时使百合各组织(根、鳞茎、茎和叶)生物产量减少。NaCl胁迫也导致百合叶片细胞膜透性增大,脯氨酸含量增加,叶绿素含量减少,同时可溶性糖含量也呈现减少的趋势。兰州百合可耐0.4%NaCl胁迫。

Effect of NaCl stress on the growth and development of Lilium davidii unicolor Cotton

Salt stress was tested by irrigating Lilium davidii unicolor Cotton in growth and development stage with NaCl water solution(0.0,0.2%,0.4,0.6,0.8% NaCl water solution) in potted soil.The results showed that the increasing salinity caused a decrease in shoot length and root number,and quality of flowers got poorer.The fresh and dry weights of every organ(root,bulb,shoot and leaf)decreased with the increase of salt levels,which caused a decrease in shoot and leaf obviously.The NaCl salinity stress resulted in raising proline content and cell membrane permeability,decreasing content of chlorophyll and soluble sugars.Lilium davidii unicolor Cotton can tolerate stress of 0.4% NaCl.