构树形成层活动周期中过氧化物酶和酯酶同工酶的变化构树形成层活动周期中过氧化物酶和酯酶同工酶的变化.pdfVIP

　　　　1995, 37( 10): 800～ 806 A cta Botanica Sinica * 1 1 * * 2 1 1 崔克明　 魏令波 　 李举怀　 李绍文　 李正理 1 2 　　 (, 100871) (, 100081)　　　　　　 　　 : ( ( . ) . ), Broussonetia papy rif era L Vent , IAA , 、,, 。 、 , , / 。 　;; ; CHANGES OF PEROXIDASE AND ESTEASE ISOZYMES DURING PERIODICITY OF CAMBIAL ACTIVITY IN BROUSSONE TIA PAP YRIFE RA ( L. ) VENT. 1 1 2 1 1 Cui Ke-ming, Wei Ling- o, Li Ju-huai, Li Shao-w en and Li Zheng-li( Lee Cheng-lee) 1 (College of L if e Sciences, Peking University , Beijing 100871) 2 ( , , 100081) Crops Institute Beij ing Academy of Agr iculture and Forestry Sciences Beijing Abstract Methods of material sampling, sectioning, electrophoresis and isozymographic analyses were descri ed in previous paper. α-Na-phthol acetate was used as the su strate for es- terase Samples w ere collected at monthly intervals etween May. 20 and July 30, then at 7- 14-day intervals etween July 30 and Octo er 14, and again at monthly intervals etw een 　　: 1993-11-16　: 1994-02-14 　* 。 * * : , 100091。 10　　 　　　: 801 Octo er 14 and the following March 25. Isozymography revealed that during periodicity of ( . ) . , cam ial activity in Broussonetia papyrif era L Vent variation of peroxidase isozyme ac- tivities in the cam ial region and xylem w ere most significant, and the enzyme contri uted to regulation of concentration of IAA occured efore the formation of late