EFFECT OF 2-CHLOROETHYLTRIMETHYL AMMONIUM-CHLORIDE ON TUBERIZATION AND ENDOGENOUS GA(3) IN ROOTS OF POTATO CUTTINGS

被引:15
作者
ABDALA, G
GUINAZU, M
TIZIO, R
PEARCE, DW
PHARIS, RP
机构
[1] UNIV NACL RIO CUARTO,FAC CIENCIAS EXACTAS,DEPT CIENCIAS NAT,RA-5800 RIO CUARTO,ARGENTINA
[2] UNIV NACL CUYO,FAC CIENCIAS AGR,RA-5505 CHACRAS CORIAS,ARGENTINA
[3] UNIV CALGARY,DEPT BIOL SCI,PLANT PHYSIOL RES GRP,CALGARY,AB T2N 1N4,CANADA
关键词
2-CHLOROETHYLTRIMETHYL AMMONIUM CHLORIDE; GIBBERELLIN A(3); SOLANUM TUBEROSUM L; TUBERIZATION;
D O I
10.1007/BF00024167
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Cuttings of potato shoots treated with the plant growth retardant 2-chloroethyltrimethyl ammonium chloride (CCC) form tubers earlier and have less biologically-active gibberellin (GA)-like substances in the roots than control cuttings. The major GA-like substance in roots of potato cuttings was identified as GA(3) by gas-chromatography-mass spectrometry (GC-MS). The content of GA(3) in roots of control cuttings, estimated by GC-MS-selected ion monitoring (SIM) using [17, 17-H-2]GA(3) as a quantitative internal standard, was 38.8 ng per g fresh weight (fw), and in roots of CCC-treated cuttings, in which tuberization was promoted, was 0.6 ng per g fw. Gibberellin A(1), GA(8) and GA(20) were also indicated as minor components of roots from both control and CCC-treated cuttings. The comparatively high GA(3) content in roots of control cuttings might be the 'root factor' responsible for delaying tuberization in potato.
引用
收藏
页码:95 / 100
页数:6
相关论文
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