الفهرس | Only 14 pages are availabe for public view |
Abstract Growth and physiological responses of peanut plants (Arachis hypogeae cv. Giza 5 and Giza 6) to fusillade and basagran herbicides; and SA were examined. Bleaching and growth reduction of leaves were the most symptoms in the two cultivars due to application of herbicides. SA application reduced the injuries which resulted due to herbicides. Leaf pigment contents of the two cultivars severely affected by herbicides. With SA, the pigment contents of herbicide treated plants were enhanced. Fusilade and basagran treatments caused accumulation in the contents of protein, free amino acids, proline, POD activity, while CAT activity was inhibited in both cultivars. Activities of APX and SOD of peanut cultivars were altred in respose to herbicides and SA treatments. APX and SOD activities were much more in G5 than in G6. Fusilade herbicide stimulated APX and inhibited SOD activities of the two cultivars, while basagran stimulated activities of APX iii SOD. Spray of SA a one day before basagran application caused inhibition and stimulation of APX and SOD activities, respectively. Leaves sprayed with a mixture of SA and basagran showed increase in APX and SOD activities. Results of H2O2 and MDA were variable with herbicides and cultivars. With basagran treatments, the H2O2 accumulated in G6 leaves and reduced in G5. MDA contents showed highly significant changes due to herbicides and SA treatments. Under herbicides effect, the change in MDA content was more obvious in G5 than G6, although, G5 control had lower contents of MDA than in G6 control. SA application caused accumulation of MDA in both cultivars. Phenolic compounds in both cultivars tended to be decrease with herbicides . |