菜心种质资源营养品质的综合分析李桂花,郭巨先,罗文龙,骆善伟,符梅*(广东省农业科学院蔬菜研究所/广东省蔬菜新技术研究重点实验室,广东广州510640)摘要[目的]对收集到的15个菜心品种维生素C、可溶性固形物、还原糖、蛋白质和粗纤维进行分析和评价,以期筛选出优质品种在生产上推广应用。[方法]采用2,6-二氯靛酚滴定法、折射仪读数法、比色法、紫外吸收法和酸碱洗涤法分别对15个菜心品种的维生素C、可溶性固形物、还原糖、蛋白质和粗纤维5个品质指标进行测定和综合评价。[结果]15个菜心品种间的营养品质成分均有显著差异(P<0.05),变异系数为12.86%~47.36%。利用隶属函数法评价菜心的综合品质,较优质品种为白菜薹、粤薹3号菜薹、青心薹、粤薹5号菜薹、粤薹2号菜薹,利用系统聚类分析法,按照品质优劣划分为4个类群,优劣顺序为Ⅲ>Ⅳ>Ⅰ>Ⅱ。[结论]该研究结果可以为菜心品质评价提供参考,为生产上推广优质新品种奠定基础。关键词菜心;营养品质;聚类分析中图分类号TS201.6文献标识码A文章编号0517-6611(2023)07-0041-05doi:10.3969/j.issn.0517-6611.2023.07.011开放科学(资源服务)标识码(OSID):ComprehensiveAnalysisoftheNutritionalQualityofFloweringChineseCabbageLIGui-hua,GUOJu-xian,LUOWen-longetal(VegetableResearchInstitute,GuangdongAcademyofAgriculturalSciences/Guang-dongKeyLaboratoryforNewTechnologyResearchofVegetables,Guangzhou,Guangdong510640)Abstract[Objective]Toselecthighqualitycultivarsintheproduction,thevitaminCcontent,solublesolidcontent,reducingsugarcon-tent,proteincontentandcrudefibercontentof15differentcultivarsoffloweringChinesecabbagewereanalyzedandevaluated.[Method]2,6-dichlorophenoltitration,colorimetricmethod,refractometerreadingmethod,enzymatichydrolysismethod,andacid-basewashingmethodwasusedtotestthecontentofvitaminC,solublesolidcontent,reducingsugar,starch,proteinanddietaryfiber.[Result]Theresultsshowedthatthereweresignificantdifferencesinthecontentsofvariousnutrientcomponentsofthe15cultivarsoffloweringChinesecabbage(P<0.05),andthecoefficientofvariationrangedfrom12.86%to47.36%.Accordingtothecomprehensivescoresbytheaveragemembershipfunctionmeth-od,thetopfivev...