Effect of high temperature and/or drought stress on the activities of SOD and POD of intact leaves in two soybean (G. max) cultivars

Effect of high temperature and/or drought stress on the activities of SOD and POD of intact leaves in two soybean (G. max) cultivars

1997

Includes references.

A:PS

Seedlings (1- to 2-weeks-old) of soyabean (Glycine max) cultivars Bainong 6 (high drought resistance) and Jilin 27 (less drought resistance) were treated with: (1) high temperature (HT), 45 degrees C for 2-4 h; (2) drought (D), Hoagland solution with 4-6% PEG 6000 for 1 week; and (3) a combination of HT and D. Leaf SOD [superoxide dismutase] and POD [peroxidase] activities were determined. In the control and stressed groups, SOD and POD activities were much higher in Bainong 6 than in Jilin 27. In Bainong 6 and Jilin 27, stress treatment of leaves caused an increased in SOD and POD activities, in comparison with the controls. In Jilin 27 leaf extracts, SOD activities in treatment 3 were lower than those in treatment 2, and POD activities in treatment 3 were lower than those in both the other treatments. In Bainong 6 leaves, SOD activities in treatment 3 remained unchanged, while POD activities increased significantly.

v.24:39-40, SOYBEAN GENETICS NEWSLETTER

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