NaCl与Na_2CO_3对水培小麦幼苗胁迫作用的比较

Comparison of Effect Between Saline(NaCl) and Alkaline (Na_2CO_3) Stress on Water Cultured Wheat Seedling

用不同浓度中性盐 (NaCl)和碱性盐 (Na2 CO3 )对 1周龄的水培小麦苗进行胁迫处理 .处理 10d后 ,测定地上、地下部分的干鲜重、含水量及叶绿素含量等生理指标 .结果表明 ,随两种盐浓度的增加 ,地上、地下部分的含水量、干鲜重及地上部分叶绿素含量均逐渐降低 .在相同Na+ 浓度下 ,各指标都是Na2 CO3 的胁迫作用大于NaCl,其中Na2 CO3 。

One week old wheat seedling of water culture were stressed with 0-300 mmol.L -1 solutions of neutral salt(NaCl) or basic salt (Na 2CO 3).Strain indexes such as the fresh weight,dry weight,moisture content and chlorophyll content were determined.The result showed that:Under both stress conditions,the fresh weight,dry weight,moisture content and chlorophyll content gradually decreased with increasing stress value.The effect of Na 2CO 3 is greater than that of NaCl.