不同外源激素对‘绿莹’石斛萌芽及开花的影响  

Effects of Different Exogenous Hormones on Germination and Flowering of Dendrobium'Lyuying'

作　　者：龚建英[1] 王华新[1] 汪小玉[1] 梁萍[1] 覃荣 唐遒冥[1] 陈宝玲[1] 苏莉花[1] Gong Jianying;Wang Huaxin;Wang Xiaoyu;Liang Ping;Qin Rong;Tang Qiuming;Chen Baoling;Su Lihua(Guangxi Forestry Research Institute,Nanning,Guangxi 530002,China;Guangxi State-owned Gaofeng Forest Farm,Nanning,Guangxi 530001,China)

机构地区：[1]广西壮族自治区林业科学研究院,广西南宁530002 [2]广西国有高峰林场,广西南宁530001

出　　处：《广西林业科学》2021年第5期551-556,共6页Guangxi Forestry Science

基　　金：广西林业科研与推广项目(gl2019KT12);广西科技基地和人才专项(桂科AD18281006);植物新品种保护与应用项目(gl2020kt30);中央财政林业科技推广示范项目([2019]TG22号);广西重点研发计划项目(桂科AB16380050)。

摘　　要：为解决‘绿莹’石斛(Dendrobium'Lyuying')无菌播种苗萌芽和开花中出现的问题,研究不同外源激素(GA3、JA、NAA和6-BA)对‘绿莹’石斛萌芽及开花的影响,以期为‘绿莹’石斛的产业化发展提供科学依据。结果表明,不同浓度6-BA处理下,‘绿莹’石斛的萌芽数均较多,其中100 mg/L处理表现最好。不同浓度GA3处理下,只有5 mg/L处理的植株开花,始花所需时间比CK处理延迟15天;不同浓度JA处理下,5和10 mg/L处理的植株能开花,始花所需时间分别比CK处理提前3天和延迟11天;不同浓度NAA处理的植株均能开花,5、15和30 mg/L处理的始花所需时间分别比CK处理提前2天、提前3天和延迟6天;不同浓度6-BA处理的植株均能开花,其花期均与CK处理差别不大。不同浓度6-BA处理的开花株数、开花率和开花重复比例均较高,开花效果最稳定,开花品质均较好。6-BA 25 mg/L处理下,‘绿莹’石斛的开花效果和品质均较佳。In order to solve problems in germination and flowering of Dendrobium'Lyuying'aseptic seedlings,effects of exogenous hormones(GA3,JA,NAA and 6-BA)on germination and flowering of D.'Lyuying'were studied to provide scientific basis for industrial development of D.'Lyuying'.Results showed that number of buds were more in treatments with different 6-BA concentrations,among which treatment with 100 mg/L was the best.In treatments with different GA3 concentrations,only plants in treatment with 5 mg/L flowered,and day of beginning flower delayed 15 d compared with CK treatment.In treatments with different JA concentrations,plants in treatments with 5 and 10 mg/L flowered,and days of beginning flower advanced 3 d and delayed 11 d compared with CK treatment,respectively.Plants in all treatments with different NAA concentrations flowered,and days of begin⁃ning flower in treatments with 5,15 and 30 mg/L advanced 2 d,advanced 3 d and delayed 6 d compared with CK treatment,respectively.Plants in all treatments with different 6-BA concentrations flowered,and differenc⁃es among flowering periods in all treatments and CK treatment were small.Number of flowering plants,flower⁃ing rate and flowering repeat percentage were higher in treatments with different 6-BA concentrations,which had the most stable flowering effects and better flowering qualities.Flowering effects and qualities of D.'Lyuy⁃ing'in treatment with 6-BA 25 mg/L was better.

关 键 词：外源激素 ‘绿莹’石斛 萌芽 开花 

分 类 号：S567.239[农业科学—中草药栽培]