Dynamic changes of nutrient content in herbaceous peony seed

查看全文 作　　者：Qimo [1]Qi;Yu [1]Li;Fanzhi [1]Meng;Guangping [2]Xing;Jilei [2]Zhou;Xianfeng [1]Guo

机构地区：[1]Forestry College,Shandong Agricultural University,Shandong Provincial Research Center of Demonstration Engineering Technology for Urban and Rural Landscape,Taian,China;[2]Forest Seedling and Flower Station in Shandong Province,Jinan,China

出　　处：《Oil Crop Science》索引2020年第5卷第2期,共6页

基　　金：financially supported by the Agricultural Major Applied Technology Innovation Project of Shandong Province;China(No.2016-36)。 摘　　要：Herbaceous peony is a promising oilseed crop.‘Hangshao’and‘Fenghuang Niepan’are two cultivars with high yield and oil content In this study,seed reserved nutrient of these two genotypes were investigated during seed development process.Results showed that‘Hangshao’and‘Fenghuang Niepan’matured approximately 85 d after flowering(DAF).The development p rocess could be divided into four stages:seed formation and enlargement stage(S1),seed inclusion and enrichment stage(S2),crude fat rapid accumulation stage(S3)and dehydration and color transition stage(S4).During this process,100-seed fresh weight(HFW)and 100-seed dry weight(HDW)increased,whereas water content(WC)decreased.HFW,HDW and WC for‘Hangshao’seed at 85 DAF were28.56 g,20.78 g and 37.50%respectively,whereas those for‘Fenghuang Niepan’seed were 27.2 g,19.78 g,and30.85%respectively.In terms of the primary metabolites measuring,soluble protein content was consistently low(only 2.24%-3.15%),while starch content was relatively high(5.60%-24.81%).They displayed a trend of gradual increasing in early stage,followed by rapid decline.Crude fat tended to accumulate continuously with a linear upward trend starting at 40 DAF,and its maximum level was reached at 85 DAF(27.57%for‘Hangshao’and29.57%for‘Fenghuang Niepan’).For the secondary metabolites determination,total phenols content was relatively steady,maintaining at 107.7-129.9 mg/g for both cultivars,while total flavonoids content varied within25.33-65.33 mg/g for‘Hangshao’and 24.33-52.37 mg/g for Tenghuang Niepan’.The maximum level for both cultivars occurred at 55 DAF.Furthermore,crude fat content was found to be highly correlated with WC by correlation analysis and linear regression model definition(P≤0.01 and r=0.954).Thus,WC was recommended for evaluating crude fat in peony seed.These findings could provide scientific reference for high-yielding production practice for oleaginous peony plant. 关键词：Crude fat FLAVONOIDS Paeonia lactiflora PHENOLS Protein Seed development STARCH

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Dynamic changes of nutrient content in herbaceous peony seed

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