广西林业科学2023，Vol.52Issue(6)：687-693,7.DOI:10.19692/j.issn.1006-1126.20230602
不同供磷水平对香花油茶幼苗生理和叶绿素荧光特性的影响
Effects of Different Phosphorus Supply Levels on Physiological and Chlorophyll Fluorescence Characteristics of Camellia osmantha Seedlings
摘要
Abstract
In order to provide reference for selection and management of Camellia osmantha,taking 2-year-old C.osmantha'Yilu'seedlings as test materials,and four different phosphorus supply levels were set up in pot experiment(CK:0 mg/kg,P1:4 mg/kg,P2:8 mg/kg and P3:16 mg/kg)to study effects of different phosphorus supply levels on physiological and chlorophyll fluorescence characteristics of C.osmantha seedlings.Results showed that when phosphorus supply level was 8 mg/kg,contents of soluble sugars,soluble proteins and malo-ndialdehyde in leaves of C.osmantha seedlings were the lowest,activities of superoxide dismutase,catalase and peroxidase were relatively high,initial fluorescence,maximum fluorescence,variable fluorescence,photo-chemical burst coefficient,electron transfer rate and actual photochemical quantum efficiency were maximum,and non-photochemical burst coefficient was relatively low.Comprehensive analysis of membership function showed that adaptive ability of C.osmantha seedlings under different phosphorus supply levels was in order of P2 level>P1 level>P3 level>CK.8 mg/kg phosphorus supply could satisfy photosynthesis and physiological reactions of C.osmantha seedlings,which was more conducive to growth and development of C.osmantha seedlings.关键词
供磷水平/生理特性/叶绿素荧光/香花油茶Key words
phosphorus supply level/physiological characteristic/chlorophyll fluorescence/Camellia osmantha分类
林学引用本文复制引用
余振东,吕琪,马锦林,陈昱宇,谢伟东,莫维维,刘凯..不同供磷水平对香花油茶幼苗生理和叶绿素荧光特性的影响[J].广西林业科学,2023,52(6):687-693,7.基金项目
广西创新驱动发展专项资金项目(桂科AA20302021-4) （桂科AA20302021-4）
广西重点研发计划项目(桂科AB18294042) （桂科AB18294042）
