林业科学2025，Vol.61Issue(10)：26-37,12.DOI:10.11707/j.1001-7488.LYKX20240633
不同花型牡丹成花过程中表型及理化指标动态变化
Dynamic Changes in Phenotype and Physicochemical Indexes during the Flowering Process of Tree Peony with Different Flower Types
摘要
Abstract
[Objective]This study aims to explore the dynamic changes in morphology and physicochemical indexes during the flowering process of tree peony with different flower types,so as to provide a theoretical basis for the regulation of flower types and cultivation management of tree peony in the future.[Method]The flower buds(flowers)of 13 different developmental stages in the flowering process of the single-petal cultivar Paeonia ostii'Fengdan'and the chrysanthemum cultivar P.suffruticosa'Lianhe'were used as experimental materials.The dynamic changes in the external morphology and the relevant important physiological and biochemical indexes[indole acetic acid(IAA),gibberellin acid(GA3),abscisic acid(ABA),zeatin riboside(ZR),soluble sugar,soluble protein,superoxide dismutase(SOD),peroxidase(POD)]were determined through observation and measurements.[Result]The flower buds(flowers)of P.ostii'Fengdan'and P.suffruticosa'Lianhe'showed different degrees of growth in width and height from the overwintering bulb stage to the full blooming stage.Both of them began to grow rapidly at the big-bell stage and the small-bell stage,respectively,and reached their peak at the full blooming stage.From the initial flowering stage to the full blooming stage,the ZR content of P.ostii'Fengdan'increased,while ZR content of P.suffruticosa'Lianhe'continued to decrease.The change trends of soluble sugar and soluble protein contents of P.ostii'Fengdan'and P.suffruticosa'Lianhe'were consistent,but the content of soluble sugar and soluble protein of P.ostii'Fengdan'was always higher than that of P.suffruticosa'Lianhe'from the color-exposure stage.Both P.ostii'Fengdan'and P.suffruticosa'Lianhe'showed an increasing trend in SOD content during the blooming stage compared to the previous stage.As the developmental stage continued,the SOD content of P.ostii'Fengdan'showed a tendency to first increase and then decrease,while P.suffruticosa'Lianhe'showed a tendency to first decrease and then increase.The change trend of POD content in flower buds(flowers)of P.ostii'Fengdan'and P.suffruticosa'Lianhe'at different development stages was basically the same,but there were slight differences in the magnitude of variation.[Conclusion]The rapid growth stage of P.ostii'Fengdan'is from the big-bell stage to the full blooming stage,and the fastest growth stage of P.suffruticosa'Lianhe'is from the small-bell stage to the full blooming stage.High levels of IAA and low levels of ABA and GA3 can promote the flowering of P.ostii'Fengdan'and P.suffruticosa'Lianhe'flowers.High levels of ABA/IAA,ABA/GA3 and low levels of ZR/IAA,ZR/GA3 may be more conducive to breaking dormancy of tree peony buds.There may be greater fluctuations in various hormones during budding stage and the circular peach stage.The stage of highest content of nutrients and antioxidant enzymes in buds of P.ostii'Fengdan'and P.suffruticosa'Lianhe'is the stage of budding stage.The small-bell stage is the key stage for differentiation of different varieties of peonies towards different flower types.关键词
牡丹/花型/内源激素/营养物质/抗氧化酶Key words
tree peony/flower type/endogenous hormones/nutrients/antioxidant enzymes分类
林学引用本文复制引用
王朵朵,魏冬峰,郭琪,李昱莹,杨雪婷,牛童非,张楠楠,侯小改..不同花型牡丹成花过程中表型及理化指标动态变化[J].林业科学,2025,61(10):26-37,12.基金项目
国家自然科学基金区域创新发展联合基金重点项目(U23A20211) （U23A20211）
河南省青年人才托举工程研究项目(2024HYTP005). （2024HYTP005）
