| Effects of abscisic acid and salicylic acid on physiological characteristics of sesame seedlings under drought stress |
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| DOI：10.7606/j.issn.1000-7601.2008.06.32 |
| Key Words: sesame ABA SA drought stress physiological characteristics |
| Author Name | Affiliation | | YAN Han | College of Life Sciences Yangtze University,Jingzhou, Hubei 434025, China | | XU Benbo | College of Life Sciences Yangtze University,Jingzhou, Hubei 434025, China | | ZHAO Fuyong | College of Life Sciences Yangtze University,Jingzhou, Hubei 434025, China | | HE Yong | College of Life Sciences Yangtze University,Jingzhou, Hubei 434025, China | | YAO Xiaoding | College of Life Sciences Yangtze University,Jingzhou, Hubei 434025, China | | TIAN Zhihong | College of Life Sciences Yangtze University,Jingzhou, Hubei 434025, China |
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| Abstract: |
| The seedling of sesame Zhongzhi 10 was treated with abscisic acid and salicylic acid under drought stress of PEG 6000 (20%、25%、30%) .The activities of super oxide dismutase (SOD) , peroxidase (POD) and catalase (CAT) , relative water content (RWC) , content of malondiadehyde (MDA) , soluble sugar (SS) and photosynthetic pigment of the seedling were studied.The results indicated that the activities of SOD, POD, CAT in the sesame seedling in the group with ABA or SA were higher than those of the control group.The ABA and SA could slowdown the reduction of RWC of the sesame seedling under drought stress.The malondialdehyde (MDA) content increased significantly and the content of soluble sugar increased at first and then decreased gradually, while the chlorophyll content always decreased and the chla/chlb and car/chl increased gradually.The results demonstrated that there were some differences among effects on physiological characteristics of the sesame seedling under drought stress between ABA and SA. |
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