NaCl胁迫对绣球生理指标的影响

以绣球为试材,采用水培法研究了0(CK)、0.01、0.05、0.1、0.5 g/LNaCl胁迫浓度下绣球叶绿素含量、类胡萝卜素含量、MDA含量、POD活性、SOD活性和CAT活性等指标的变化情况.结果表明:随着NaCl浓度的增加,叶绿素含量和类胡萝卜素含量均有所下降,MDA含量有升高的趋势；在(0.01～0.05 g/L)低浓度NaCl处理下,保护酶POD活性低于CK,在(0.10～0.50g/L)高浓度NaCl处理下,POD活性高于CK.SOD酶活性显著提高.随着NaCl浓度的增强,在(0.10～0.50 g/L)处理下CAT活性高于CK且显著增加.绣球具有一定的抗NaCl胁迫的能力与喜盐能力.

Effect of NaCl Stress on Physiological Response of Hydrangea

The effects of NaCl stress on the physiological of Hydrangea with the treatment of soilless culture were studied,in which the concentration of NaCl were 0(CK),0.01,0.05,0.1 and 0.5 g/L respectively.The content of chlorophyll,Carotenoid and Malondialdehyde(MDA)were tested,as well as the activities of POD,CAT and SOD were determined.The results indicated that both the chlorophyll and Carotenoid were reduced as NaCl concentration rised gradually.MDA content had the increased tendency gradually when NaCl concentration increased.The POD activities were lower than CK that was treated by NaCl concentration among 0.10 g/L and 0.50 g/L Height concentration of NaCl treatment had stronger POD activities than CK.SOD activities notability increased that was treated by NaCl concentration among 0.10 g/L and 0.50 g/L height concentration of NaCl treatment had stronger CAT activities than CK.Hydrangea had a certain NaCl stress ability and Halophila ability.