外源GA_3对非洲菊舌状花着色的影响  

Effects of Exogenous Gibberellins on the Pigmentation in Gerbera hybrida Ray Floret

作　　者：吕长平[1] 陈海霞[1] 陈建[1] 

机构地区：[1]湖南农业大学园艺园林学院,长沙410128

出　　处：《中国农学通报》2012年第22期212-215,共4页Chinese Agricultural Science Bulletin

基　　金：科技部科技人员服务企业专项"鲜切花产业示范基地建设技术攻关项目"(2009GJD20028);长沙市科技局资助项目"优质鲜切花非洲菊的产业化生产技术研究"(K071023-21)

摘　　要：以红色非洲菊品种‘红地毯’为试材,在花朵发育的P1时期喷施赤霉素,浓度分别为0、50、100、200、400、800mg/L,研究外源GA3处理对非洲菊舌状花着色的影响。结果表明:随着外源赤霉素浓度的增加,花瓣内花青素含量逐渐升高,促进花青素的合成;当外源赤霉素浓度在100～200mg/L时,最有利于类黄酮的合成和可溶性糖的积累;但是赤霉素浓度大于200mg/L时,才能提高苯丙氨酸解氨酶的活性,因此赤霉素浓度约为200mg/L时能促进非洲菊舌状花着色。At the development stage 1 of red petal Gerbera hybrida cultivar ’ Hongditan ’,exogenous gibberellins of different concentration at 0,50,100,200,400,800 mg/L were sprayed on flower bud,the effect of exogenous gibberellins on petal pigmentation was investigated.Results showed that exogenous gibberellins could promote the anthocyanin biosynthesis,the flavonoids biosynthesis and soluble sugar accumulation were most promoted when the exogenous gibberellins concentrations among 100-200 mg/L,the activity of PAL was improved when the exogenous gibberellins concentrations was above 200 mg/L exclusively,so it effeced the pigmentation in ray floret.

关 键 词：非洲菊 舌状花 花色素苷 赤霉素 

分 类 号：S682.19[农业科学—观赏园艺]