QIN Jiajia,ZHANG Jihong,LUO Sumei,et al.Effects of PP333 on Seedling Growth and Chlorophyll Fluorescence Parameters of Prunus triloba[J].Northern Horticulture,2023,(06):47-54.[doi:10.11937/bfyy.20223375]
PP333浸根处理对榆叶梅幼苗生长及叶绿荧光参数的影响
- Title:
- Effects of PP333 on Seedling Growth and Chlorophyll Fluorescence Parameters of Prunus triloba
- Keywords:
- growth index; chlorophyll content; chlorophyll fluorescence parameter; PP333; Prunus triloba
- 文献标志码:
- A
- 摘要:
- 以一年生榆叶梅（Prunus triloba）幼苗为试材，采用单因素分析方法，研究了不同浓度PP333（0（CK）、50、100、150、200 mg?L-1）对榆叶梅幼苗生长指标、叶绿素含量及叶绿素荧光指标的影响，以期筛选出对榆叶梅幼苗生长最有利的PP333浓度。结果表明：PP333能有效地降低榆叶梅株高，增加榆叶梅基径，且在浓度为150 mg?L-1处理下效果最佳；PP333溶液增加了榆叶梅幼苗叶片叶绿素含量。随着PP333溶液浓度增加，叶绿素含量呈先增加后减小的变化趋势。其中，叶绿素a（Chl a）、叶绿素b（Chl b）、叶绿素总量（Chl t）较CK分别增加了20.58%~38.81%、16.28%~95.27%、24.64%~54.99%；PP333溶液有利于榆叶梅幼苗叶片电子传递效率（ETR）、实际光化学量子效率（ΦPSⅡ）、光化学淬灭系数（qP）和最大光化学效率（Fv/Fm）增加，非光化学淬灭系数（qN）降低；相关分析表明，Chl a、Chl b和Chl t与叶绿素荧光参数ETR、ΦPSⅡ、qP和基径呈显著正相关,与qN、株高呈显著负相关。综合分析表明适合榆叶梅生长发育的最佳浓度为150 mg?L-1。
- Abstract:
- Taking one-year-old Prunus triloba seedlings as experimental materials，single factor analysis was used to study the effects of PP333 on growth index，chlorophyll content and chlorophyll fluorescence parameters of Prunus triloba seedlings at different concentrations(0(CK)，50，100，150,200 mg?L-1),in order to select the most favorable PP333 concentration for the growth of Prunus triloba seedlings.The results showed that PP333 could effectively reduce the height and increase the basal diameter of Prunus triloba seedlings，and the best effect was achieved at a concentration of 150 mg?L-1.The PP333 increased the chlorophyll content in leaves of Prunus triloba seedlings.As the concentration of PP333 increased，chlorophyll content showed a trend of increasing and then decreasing.Among them，compared with CK，chlorophyll a (Chl a)，chlorophyll b (Chl b) and total chlorophyll (Chl t) increased by 20.58%-38.81%，16.28%-95.27% and 24.64%-54.99%，respectively.The PP333 solution was beneficial for the increase of electron transport rate (ETR)，actual photochemical efficiency (ΦPSⅡ)，photochemical quenching (qP) and maximum photochemical efficiency (Fv/Fm) and the decrease of non-photochemical quenching (qN) in leaves of Prunus triloba seedlings.Correlation analysis showed that Chl a，Chl b and Chl t were positively correlated with ETR，ΦPSⅡ，qP and basal diameter，and negatively correlated with qN and plant height.The comprehensive analysis showed that 150 mg?L-1 was the best concentration suitable for the growth and development of Prunus triloba seedlings.
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备注/Memo
第一作者简介：覃嘉佳（1983-），女，硕士，副教授，现主要从事休闲农业与植物栽培技术及园林设计等研究工作。E-mail：qinjiajia88888888@126.com.责任作者：魏绪英（1974-），女，博士，副教授，现主要从事风景园林历史理论及园林规划设计与城市绿地系统规划等研究工作。E-mail：1738991352@qq.com.基金项目：江西省现代农业产业技术体系建设专项资金资助项目（JXARS-15-规划设计）；2019年度江西省教育厅科学技术研究资助项目（GJJ191394）。收稿日期：2022-08-17