PP_(333)浸根处理对榆叶梅幼苗生长及叶绿荧光参数的影响  

Effects of PP_(333)on Seedling Growth and Chlorophyll Fluorescence Parameters of Prunus triloba

作　　者：覃嘉佳[1] 张继红[2] 罗素梅 贾万梅 魏绪英[5] QIN Jiajia;ZHANG Jihong;LUO Sumei;JIA Wanmei;WEI Xuying(Department of Landscape Engineering,Jiangxi Biotech Vocational College,Nanchang,Jiangxi 330200;Institute of Landscape Planning and Design,Jiangxi Academy of Forestry,Nanchang,Jiangxi 330013;Ganzhou Vegetable and Flower Research Institute,Gannan Academy of Sciences,Ganzhou,Jiangxi 341413;Jiangxi Provincial Center of Forestrelated Ecological Project Construction,Jiangxi Provincial Department of Forestry,Nanchang,Jiangxi 330000;Art College,Jiangxi University of Finance and Economics,Nanchang,Jiangxi 330320)

机构地区：[1]江西生物科技职业学院园林工程系,江西南昌330200 [2]江西省林业科学院园林规划设计研究所,江西南昌330013 [3]赣南科学院赣州市蔬菜花卉研究所,江西赣州341413 [4]江西省林业局江西省林业生态工程建设中心,江西南昌330000 [5]江西财经大学艺术学院,江西南昌330320

出　　处：《北方园艺》2023年第6期47-54,共8页Northern Horticulture

基　　金：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)。

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PP_(333)(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PP_(333)浓度。结果表明:PP_(333)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;PP_(333)溶液增加了榆叶梅幼苗叶片叶绿素含量。随着PP_(333)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%;PP_(333)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)。Taking one-year-old Prunus triloba seedlings as experimental materials,single factor analysis was used to study the effects of PP_(333)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 PP_(333)concentration for the growth of Prunus triloba seedlings.The results showed that PP_(333)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 PP_(333)increased the chlorophyll content in leaves of Prunus triloba seedlings.As the concentration of PP_(333)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 PP_(333)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.

关 键 词：生长指标 叶绿素含量 叶绿素荧光参数 PP_(333)溶液 榆叶梅 

分 类 号：S685.99[农业科学—观赏园艺]