| Effect of calcium on protective enzymes activeness and physiological characteristics of maize seedlings under salt stress |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2008.03.24 |
| Key Words: calcium salt stress maize protective enzymes activeness membrane permeability |
|
| Hits: 297 |
| Download times: 233 |
| Abstract: |
| A solution culture was conducted to study the effect of Ca2+ on the growth of maize seedlings chlorophyll content free amino acids content the activeness of several protective enzymes and other physiological characteristics．The results show that the Ca2+ concentration at 4mmol／L could obviously increase plant growth and restrain the decrease of chlorophyll content reduced permeability of cell membrane and enhance SOD and POD activity in leaves and roots．With the increase of Ca2+ concentration the CAT activeness in roots was increased but that in leaves was decreased．The free amino acids and soluble protein content in roots increased in terms of2～4mmol／L of Ca2+ concentration but decreased in that of 6mmol／L．Soluble protein in leaves was decreased with the increase of Ca2+ concentration．The above results suggested that the appropriate Ca2+ supply can enhance the salt tolerance in maize growing in salt stress. |