GA_3处理对春菊花期的影响及其生物学效应  

Study on GA_3 treatment on anthesis of spring chrysanthemum and biological effects

作　　者：杜红梅[1] 张效平[2] 

机构地区：[1]上海交通大学园林环境科学系,上海201101 [2]南京农业大学园艺系,南京210095

出　　处：《上海交通大学学报（农业科学版）》2002年第4期307-311,共5页Journal of Shanghai Jiaotong University(Agricultural Science)

摘　　要：在花芽形态分化期喷施 2 5 mg/L、5 0 mg/L、1 0 0 mg/L GA3溶液使现蕾期提早 1 d、3 d和 1 d;同样浓度的 GA3溶液在花蕾膨大期施用后 ,显著增加了花蕾膨大的速度 ,并且使始花期分别比对照提前了 2 d、6d和 6d;5 0 mg/L的 GA3溶液在花芽形态分化期喷施 1次使始花期提前 2 d,在花蕾膨大期喷施 1次使始花期提前 6d,而 GA3溶液 2次处理后始花期提前 8d。分析 GA3溶液处理提前花期的生理学基础发现 ,GA3处理有利于顶芽中的干物质积累 。It was found that the time of flower budding was advanced 1 day,3 days and 1 day by 25 mg/L?50 mg/L?100 mg/L GA 3 treatments during the differentiation of flower buds .Alabastrums became more bigger and the time of first flowering was advanced 2 days,6 days and 6 days when 25 mg/L?50 mg/L?100 mg/L GA 3 were sprayed during the enlargement of alabastrums. The time of first flowering was advanced 2 days,6 days and 8 days when 50 mg/L GA 3 was sprayed only once during the differentiation of flower buds, the enlargement of alabastrums and sprayed two times. The contents of dry matter and soluble sugar were increased in the apical buds with GA 3 treatments.

关 键 词：GA3 春菊 花期 生物学效应 

分 类 号：S682.11[农业科学—观赏园艺]