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Difference in BAPAase activity between cotyledon and hypocotyl of peanut embryos during developing and germinating

Lin Lu, Fu Jiarui

Faculty of Light Industry and Food Chemistry Engineering, South University of Technology. Guangzhou 510641, Gunagdong

Abstract

During the development of peanut (Arachis hypogaea L.) embryos,activity of BAPAase was found in the cotyledon and hypocotyl. When peanut seed were in the process of germination, activity of BAPAase in the cotyledon and hypocotyl increased significantly. Exogenous ABA inhibited the activity of BAPAase in the cotyledon and hypocotyl of peanut seed developing or germinating　in vitro, and concentration of ABA needed was higher in the hypocotyl. Act-D and CHM showed no effect on the action of ABA on the activity of BAPAase of the cotyledon of peanut seed, but they　inhibited obviously the activity of BAPAase of the hypocotyl of peanut, these results indicated that no nevo-BAPAase was synthesized in the cotyledon, but nevo BAPAase was probably synthesized　in the hypocotyl of peanut seed.

Key words: Peanut embryos;Cotyledon;Hypeotyl;BAPAase activity;ABA

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Citing This Article：

Lin Lu, Fu Jiarui. Difference in BAPAase activity between cotyledon and hypocotyl of peanut embryos during developing and germinating. Acta Physiol Sin 1997; 49 (1): (in Chinese with English abstract).