ZHANG Yifan,YAO Feifei,HUANG Yanlu,et al.Effects of Paclobutrazol on the Growth and Development of Two Dendranthema Varieties[J].Northern Horticulture,2021,(19):84-91.[doi:10.11937/bfyy.20210617]
多效唑对两个菊花品种生长和发育的影响
- Title:
- Effects of Paclobutrazol on the Growth and Development of Two Dendranthema Varieties
- Keywords:
- paclobutrazol; dendranthema; potted plant; growth; development
- 文献标志码:
- A
- 摘要:
- 以‘紫燕翻飞’和‘青川永翠’2个菊花品种为试材，采用不同浓度的植物生长延缓剂多效唑溶液进行根部浇灌处理，分析灌根处理后菊花的生长发育状况，研究了多效唑在菊花矮化栽培中的适宜浓度，以期为多效唑在菊花株形和开花调控中的合理应用提供参考依据。结果表明：1）600 mg?L-1多效唑溶液对2个菊花品种的生长抑制最强，植株矮化效果最好，但茎秆较细，叶片数较少，而1 000 mg?L-1多效唑溶液处理的矮化效果仅次于600 mg?L-1处理，但茎粗相对于600 mg?L-1处理较粗，叶片数更多，植株长势更好；2）不同多效唑的浓度对‘紫燕翻飞’的现蕾开花影响不同，400 mg?L-1处理的现蕾最早但开花最晚，200 mg?L-1处理的现蕾较晚但开花最早且花径最大；‘青川永翠’在多效唑溶液处理后现蕾和开花时间均以1 000 mg?L-1处理最早，200 mg?L-1处理开花现蕾最晚且花径最小，600 mg?L-1处理菊花花蕾数量最少，除200 mg?L-1处理组外，其它浓度处理均促进花径增大。由此可知，多效唑对‘紫燕翻飞’和‘青川永翠’菊花的生长和发育均有不同程度影响，2个品种的高生长均明显受到抑制，导致菊花现蕾开花时间延迟，花蕾数量减少，但在最大花径形态指标上2个品种则表现不同。
- Abstract:
- Two dendranthema varieties,‘Ziyan Fanfei’ and ‘Qingchuan Yongcui’ were used as materials,and different concentrations treatment was carried out.The growth retardant paclobutrazol solution was used for root irrigation treatment,and the growth and development of dendranthema after root irrigation treatment were analyzed.The appropriate concentration of paclobutrazol in dendranthema dwarf cultivation,in order to provide reference for the rational application of paclobutrazol in dendranthema plant shape and flowering control.The results showed that,1) the 600 mg?L-1 paclobutrazol solution had the strongest growth inhibition on the two dendranthema varieties,and the plant dwarfing effect was the best,but the stems were thinner and the number of leaves was less,while the 1 000 mg?L-1 paclobutrazol solution treatment was dwarfing.The effect was second only to the 600 mg?L-1 concentration treatment,but the stem thickness was relatively thicker than 600 mg?L-1,the number of leaves was more,and the plant growth was better.2) Different paclobutrazol concentrations had different effects on the budding and flowering of ‘Ziyan Fanfei’,400 mg?L-1 treatment buds the earliest but the latest flowering,200 mg?L-1 treatment buds late but the earliest flowering and the largest flower diameter;after the paclobutrazol solution treatment,the budding and flowering time of the ‘Qingchuan Yongcui’ were the earliest in the 1 000 mg?L-1 treatment group,the 200 mg?L-1 treatment had the latest budding and the smallest flower diameter,and the 600 mg?L-1 treatment had the least number of dendranthema buds,except for the 200 mg?L-1 treatment.Outside the group,other concentration treatments all promoted the increase of flower diameter.It can be seen that paclobutrazol has different effects on the growth and development of ‘Ziyan Fanfei’ and ‘Qingchuan Yongcui’ dendranthemas.The high growth of the two varieties was obviously inhibited,which lead to the delay of budding and flowering time and the number of buds but the two varieties behaved differently on the maximum flower diameter morphology index.
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备注/Memo
第一作者简介：张艺帆(1997-)，女，硕士研究生，研究方向为观赏植物栽培生理生态。E-mail:842867320@qq.com.责任作者：许璐(1988-)，女，博士，讲师，现主要从事园林植物与观赏园艺等研究工作。E-mail:xulu5448@163.com.基金项目：湖南省自然科学基金资助项目（2019JJ50232）；湖南省教育厅资助科研资助项目（18B101）；湖南农业大学大学生创新训练校级资助项目（xcx19014）；湖南省科技计划资助项目（2018TP2007，2019TP1033）；湖南农业大学‘双一流’科学研究培育资助项目（SYL201802026，SYL2019012）；湖南农业大学第三批重大科研项目暨创新团队培育工程（201909）共同资助项目。收稿日期：2021-02-07