摘要
为评价不同品种(系)油梨果实品质差异,以富尔特、桂研10号、GYL-1、GYL-2、GYL-3为试验材料,测定其单果重、果实横径、果实纵径、果形指数、可食率、含水量、可溶性固形物含量、可滴定酸含量、可溶性蛋白含量、固酸比、维生素C含量和粗脂肪含量共12个品质指标,利用模糊数学隶属函数、相关性分析、主成分分析和聚类分析,客观、准确地分析油梨果实品质的差异。结果表明:(1)不同品种(系)油梨果实品质性状差异明显,变异系数在4.39%~40.68%之间,以粗脂肪含量的变异程度最大,含水量变异程度最小。(2)通过隶属函数值分析,不同油梨品种果实品质优劣依次表现为GYL-2>富尔特>桂研10号>GYL-1>GYL-4。(3)主成分分析表明,前4个主成分的累积贡献率达到100%,决定第1主成分的主要为可滴定酸含量、含水量、可溶性蛋白含量和可溶性固形物含量;决定第2主成分的主要为粗脂肪含量、维生素C含量、固酸比和可食率;果形指数和果实纵径对第3主成分的贡献率最大;第4主成分主要反映指标维生素C含量;根据主成分分析的综合分值,不同品种(系)排名为GYL-2>富尔特>桂研10号>GYL-1>GYL-4。(4)聚类分析结果显示,5个油梨品种(系)被分成3类,其中GYL-2、富尔特、桂研10号的果实品质优于GYL-1和GYL-4。综上,隶属函数法、主成分分析和聚类分析结果基本一致,即品种GYL-2果实品质最好,富尔特次之,GYL-4最差。研究结果揭示了5个油梨品种(系)果实品质的差异,建立了一套适合油梨果实品质评价的方法,为贵州油梨产业可持续发展奠定理论基础。
In order to evaluate the difference of fruit quality of different varieties(lines)of avocado,Fuerte,Guiyan 10,GYL-1,GYL-2 and GYL-3 were used as test materials to determine 12 quality indexes,including single fruit weight,fruit width,fruit length,edible rate,water content,soluble solid content,titratable acid content,soluble protein content,vitamin C content and crude fat content.Principal component analysis and cluster analysis were used to objectively and accurately analyze the differences of avocado fruit quality.The results showed that:(1)the quality characteristics of different varieties(lines)were significantly different,the coefficients of variation were 4.39%~40.68%,the variation of crude fat content was the largest,and the variation of water content was the smallest.(2)The quality of avocado was GYL-2>Fuerte>Guiyan 10>GYL-1>GYL-4 by membership function value analysis;(3)The principal component analysis showed that the first four main components were extracted and the cumulative contribution rate was 100%.The first principal component was determined by titratable acid content,water content,soluble protein content and soluble solid content.The second principal component was determined by crude fat content,vitamin C content,solid acid ratio and edible rate.The third principal component was determined by fruit shape index and fruit width.And the fourth principal component was determined by vitamin C content.According to the results of cluster analysis,five varieties(lines)of avocado were divided into three groups,among which the fruit quality of group one including GYL-2,Fuerte and Guiyan 10 was better than that of GYL-1 and GYL-4 groups.To sum up,the results of membership function,principal component analysis and cluster analysis were basically the same,that is,the quality of GYL-2 was the best,that of Fuerte was the second,and that of GYL-4 was the worst.The present research revealed the differences of fruit quality among five varieties(lines)of avocado,and established a set of suitable methods for evaluat
作者
罗立娜
韩树全
王代谷
李茂富
马蔚红
张正学
刘小翠
LUO Lina;HAN Shuquan;WANG Daigu;LI Maofu;MA Weihong;ZHANG Zhengxue;LIU Xiaocui(Institute of Subtropical Crops,Guizhou Academy of Agricultural Sciences,Guizhou Xingyi 562400,China;College of Tropical Agriculture and Forestry,Hainan University,Haikou 570228,China;Haikou Experimental Station,Chinese Academy of Tropical Agricultural Sciences,Haikou 570102,China)
出处
《中国农业科技导报》
CAS
CSCD
北大核心
2021年第3期105-113,共9页
Journal of Agricultural Science and Technology
基金
黔科合支撑项目([2019]2268号)
黔农科院青年基金项目([2018]32号)
农业农村部农业技术试验示范与服务支持项目(SMH2019-2021)。
关键词
油梨
品质性状
主成分分析
差异分析
avocado
quality trait
principal component analysis
difference analysis
