外源茉莉酸甲酯对香雪兰生长的影响
投稿时间:2017-05-31    点此下载全文
引用本文:晏姿,吴月琴,孙忆,唐东芹.外源茉莉酸甲酯对香雪兰生长的影响[J].《上海交通大学学报》(农业科学版),2018,(3):61-66, 72
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作者单位E-mail
晏姿 上海交通大学 设计学院,上海 200240
上海共青森林公园,上海 200430 
386065097@qq.com 
吴月琴 上海市花卉良种试验场,上海 201615  
孙忆 上海交通大学 设计学院,上海 200240  
唐东芹 上海交通大学 设计学院,上海 200240  
基金项目:闵行区产学研项目(2017MH288);上海市农委科技兴农重点攻关项目[沪农科攻字(2014)第1-2]
中文摘要:研究了不同浓度茉莉酸甲酯(MeJA)水溶液浸泡种球及叶面喷施对盆栽香雪兰(Freesia hybrida)生长发育的影响。结果表明,MeJA对香雪兰的生长发育有明显的调控影响。浸球处理中,所有处理组都促进了株高的生长,1 mg/L和100 mg/L处理组的小花数量最多,且都早于对照组4 d开花;10 mg/L组开花比对照组早1周且总花期最长达19 d。喷施处理中,400 mg/L处理对株高的降低效果最好,10 mg/L处理组的小花数最多,1 mg/L处理组开花最早且总花期最长;1 mg/L处理组的大球数量最多,且繁殖系数最高,比对照组提高35.5%。综上,10~100 mg/L喷施处理控制株高的效果最佳,1~100 mg/L浸球和1~10 mg/L喷施处理最有利于增加香雪兰的小花数并延长花期。
中文关键词:小苍兰  茉莉酸甲酯  浸泡种球  叶面喷施  生长调控
 
Effects of exogenous methyl jasmonate on the growth of Freesia hybrida
Abstract:The effects of methyl jasmonate (MeJA) on the growth of potted freesias were evaluated by bulb immersing and leaf spraying. Bulb immersing with MeJA promoted plant growth at all tested concentrations, accelerated blooming and increased the number of flowers at 1,0 and 100 mg/L. Interestingly, bulbs immersed with 10 mg/L MeJA blossomed 7 days earlier than the control and the total florescence reached up to 19 days. In leaf spraying treatments, MeJA reduced the plant height significantly and the treatment with 400 mg/L had the best effect. The largest flower number was observed under 10 mg/L treatment. The plants blossomed earliest and the longest total florescence was present under the 1 mg/L treatment. The largest number of bulbs and the highest reproduction coefficient were observed under 1 mg/L treatment. Taken all considerations, leaf spraying with 10-100 mg/L MeJA had the best effect on controlling plant height and bulb immersing with 1-100 mg/L and leaf spraying with 1-10 mg/L MeJA had the best effect on increasing flower number and prolonging florescence.
keywords:Freesia hybrida  methyl jasmonate  leaf spraying  bulb immersing  growth regulation
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