文献类型：期刊文献

中文题名：不同光周期下馥郁滇丁香'香妃'的成花反应以及花芽分化进程的解剖学研究

英文题名：Flowering Response and Anatomical Study on Process of Flower Bud Differentiation for Luculia gratissima 'Xiangfei' under Different Photoperiods

作者：万友名[1] 马宏[1] 赵振刚[1] 李太强[1] 刘雄芳[1] 刘秀贤[1] 李正红[1]

第一作者：万友名

机构：[1]中国林业科学研究院资源昆虫研究所

年份：2018

卷号：38

期号：9

起止页码：1659-1666

中文期刊名：西北植物学报

外文期刊名：Acta Botanica Boreali-Occidentalia Sinica

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：中国林科院基本科研业务费专项资金(CAFYBB2017MB014);国家林业局林业公益性行业科研专项(201404705)

语种：中文

中文关键词：光周期;馥郁滇丁香;成花反应;花芽分化

外文关键词：photoperiod;Luculia gratissima;flowering response;floral bud differentiation

分类号：Q945.43;Q944.58

摘要：以馥郁滇丁香品种‘香妃'扦插苗为试验材料,通过人工设置不同的光周期及采用迁光法对其进行处理,探讨不同光周期下馥郁滇丁香‘香妃'的成花反应,并采用石蜡切片法观察其花芽分化进程,以期为馥郁滇丁香‘香妃'的花期调控及商品化盆栽提供理论依据。结果表明:(1)馥郁滇丁香‘香妃'属于质性或专性短日照植物,临界日长约为14h,适宜成花的日照长度为10～12h,限界性诱导光周期为30d短日照。(2)在诱导光周期下,花芽形态分化包括未分化期、总苞原基分化期、花序或小花原基分化期、花被原基分化期、雄蕊原基分化期及雌蕊原基分化期。在诱导光周期下处理16d后,植株全部完成了成花转变;处理30d后,所有植株的花芽分化处于花被原基发育形成期,并且成花决定达到稳定状态,移入非诱导光周期下不会发生成花逆转。(3)在4h暗中断的非诱导光周期下,所有植株的芽一直处于营养生长的未分化期。
In this study,Luculia gratissima ‘Xiangfei＇cuttings were selected as material.The floral reaction was explored by different photoperiod treatments and transferring plants between short day and long day conditions.Meanwhile,the process of flower-bud differentiation under different photoperiods was observed by paraffin section.This study attempted to provide a theoretical basis for flowering control and cultivation of potted plants in L.gratissima ‘Xiangfei＇.The results indicated that：（1）L.gratissima‘Xiangfei＇is a qualitative or obligatory short-day plant,the critical day-length is about 14 h,the suitable day-length for flowering is 10-12 h,and the limited inductive photoperiod is 30 short-day.（2）Under the inductive photoperiod,the period of flower bud differentiation included undifferentiation phase,bract primordium differentiation phase,inflorescence or small flower primordium differentiation phase,perianthprimordium differentiation phase,stamen primordium differentiation phase,and pistil primordium differentiation phase.After induced photoperiod treatment for 16 d,all plants completely achieved the transition to flowering.After treatment for 30 days,the flower bud differentiation of all plants was at the stage of perianth primordium formation,the floral determination reached a stable maintenance state and the floral reversion would not occur when transferred to the non-inductive photoperiod.（3）Under the uninduced photoperiod of 4 hdark interruption,buds of plants were always in undifferentiation phase of vegetative growth.