Effects of drought stress on carbon metabolism of bermudagrass (Cynodon dactylon L.)

The effect of drought stress on carbon metabolism in the leaves and roots bermudagrass was investigated. Plants established PVC tubes suffered from three water treatments for 10 days. C138 Tifway (drought-tolerant) were found to have lower relative electrical conductivity higher use efficiency than C32 (drought-sensitive) under moderate by increasing carotenoid soluble sugar content rapidly decreasing leaf starch content. sucrose synthase activity roots, acid invertase neutral substantially decreased severe drought, resulting a slow decomposition rate significantly fructose glucose contents Tifway. activities four enzymes greater those while contrary, indicating that transported obtained reduce damage. path analysis indicated activity, might be key parameter drought.