干旱胁迫对春大豆叶绿素含量和根系活力的影响

以抗旱性不同的3个春大豆品种为材料,对各生育时期不同干旱胁迫条件下叶片叶绿素含量、根系活力和根系相对含水率的变化进行了研究.结果表明:随干旱胁迫程度的增加,叶绿素含量、根系相对含水率显著降低；根系活力苗期＞开花期＞结荚期＞鼓粒期,根系相对含水率鼓粒期＞结荚期＞开花期＞苗期.在干旱胁迫条件下,叶绿素含量在苗期、根系活力在...

Effect of Drought Stress on Chlorophyll Content and Root Activity of Spring Soybean

In order to research the effect of drought stress on soybean physiological property,chlorophyll content,root activity and root relative water content of three spring soybean varieties with different drought resistance were determined under drought stress.The results showed that chlorophyll content and root relative water content decreased significantly with the increase of drought stress,the root activity was seedling >flowering >pod-setting >seed-filling,the root relative water content was seed-filling >pod-setting >flowering >seedling.The chlorophyll content in seedling and root activity in seedling,flowering,pod-setting were Heinong 57>Gailiang 168>Suinong 26 under drought stress.The root relative water content was Heinong 57>Gailiang 168>Suinong 26 under moderate drought stress.Under field moisture capacity of 30%-75%,root relative water content significant positively correlated with chlorophyll content,while significant negatively correlated with root activity.