Title：
Application of potassium polyacrylate increases soil water status and improves growth of bermudagrass (Cynodon dactylon) under drought stress condition
Authors：
Corresponding
Author：
Xun Liu, Zhulong Chan？
Pubyear：
2015
Title of
Journal：
Scientia Horticulturae
Paper
Code：
Volume：
197
Number：
Page：
705-711.
Others：
Classification：
Source：
Abstract：
Water availability is the key factor limiting plant growth and development especially in dry and semiaridecosystems. Super-absorbent polymers help soil keep water after raining or irrigation, and release watergradually during plant growth. This study examined the effect of potassium polyacrylate (K-PAM) on soilwater content and physiological changes of bermudagrass in the greenhouse. The results showed thatincorporation of K-PAM increased soil water content and survival rate of bermudagrass. Physiologicalparameter analysis showed that K-PAM treatment resulted in decreased cell membrane damage throughmodulation of EL and MDA contents in bermudagrass. Plants grown with K-PAM accumulated higheramount of proteins and proline under stress condition, and decreased ROS production. Expression level ofseveral ROS related genes and stress inducible genes were largely up-regulated in plants by drought stress.However, plants grown in K-PAM mixed soil exhibited lower gene expression levels when compared toplants without K-PAM. The results indicated that K-PAM application effectively increased soil watercontent and improved bermudagrass growth under drought stress condition.
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