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Effect of methyl jasmonate on the growth and drought resistance in peanut seedlings

Pan Ruichi, Gu Huangqing

Biology Department, South China Normal University. Guangzhou 510631,Guangdong

Abstract

Peanut (Arachis hypogaea) L.) seedlings were cultured in 1/2 Knop solution containing methyl jasmonate at different concentrations. At three-or four-leaf stage, the seedlings were treated with polyethylene glycol solution for investigating the resistance of MJ-treated seedlings to water stress. Morphological, anatomical and physiological changes were found in treated seedlings, particularly at a concentration of 125mg/L. MJ reduced the stem heitht, total leaf area and transpiration rate increased the thickness of leaf and the size of water storage cells in leaf. There were similar increases in the levels of ABA and proline as well as peroxidase ac tivity. MJ can, therefore, reduce the loss of water and enhance the storage of water in leaves under water stress and may help peanut seedlings to adapt to drought

Key words: Peanut;Methyl jasmonate;Abscisic acid;Proline drought;Resistance

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Citing This Article：

Pan Ruichi, Gu Huangqing. Effect of methyl jasmonate on the growth and drought resistance in peanut seedlings. Acta Physiol Sin 1995; 47 (3): (in Chinese with English abstract).