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Effects of an Epidermal Growth Factor on Growth of Zea Primary Roots and Mesocotyls

Authors:	Kato, Ryoichi Shimoyama, Toshiko Suzuki, Takashi Uchida, Kenko Shinomura, Tomoko H. Harada, Yoshinori

Affiliation:	¹ Biology Laboratory, Faculty of Education, Yamagata University Yamagata, 990 Japan ² Science Laboratory, Faculty of Education, Yamagata University Yamagata, 990 Japan ³ Advanced Research Laboratory, Hitachi, Ltd. Hatoyama, Saitama, 350-03 Japan

Abstract:	Sections of the elongation zones of primary roots and mesocotylsof Zea mays L. were incubated with various concentrations ofhuman epidermal growth factor (EGF). The growth rates of rootsections incubated with 1,000, 100 and 10 µg liter¹EGF were higher than that of control by 15%, 26% and 14%, respectively.The rates of mesocotyl sections incubated with 100, 10, 1.0and 0.1µg liter¹ EGF were 23%, 31%, 24% and 22%higher than that of control. (Received August 8, 1994; Accepted November 1, 1994)

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