Comprehensive Evaluation of Twelve Apple Varieties Based on Nineteen Quality Indexes
To study the changes of post harvest quality of different apple varieties in different producing areas,and screen out apple varieties with good quality,12 apple varieties were used as materials to determine 19 qual-ity indexes(hardness,soluble solids,titratable acid,vitamin C,respiratory strength,ethylene release,rup-ture force,rupture displacement,rupture work,yield force,yield work,yield displacement,flesh hardness,flesh work,L*value,b*value,c*value,h*value).The principal component analysis was used for compre-hensive evaluation.Results showed the significant differences in each index among different varieties.The fruit hardness and soluble solid content of Ruixianghong were significantly higher than those of other varieties.The contents of titratable acid and vitamin C in Guoguang apple were the highest.The respiration intensity of Hua-hong fruit was the highest.There was no significant difference in ethylene release between Ruiyang and Hua-yue,which were significantly higher than other varieties.Among the puncture parameters,the rupture dis-placement,rupture work and flesh work of Guoguang apple were the largest.Ruixianghong apple had the highest breaking force,yield strength,yield work and flesh hardness,and Huaqing had the highest yield dis-placement.In the color difference data,the L*value of Guoguang apple was the largest,the a*value of Ruix-ianghong apple was the largest,and the b*,c*,h*values of Ruixue apple were the largest.The hardness had significant positive correlation with soluble solids,rupture power,rupture work,yield power,yield work,flesh hardness and flesh work,and significantly negative correlation with ethylene release.Yield work was positively correlated with flesh hardness and flesh work.There was an extremely significant positive correla-tion between flesh hardness and flesh work.L*value was positively correlated with b*value and h*value,and negatively correlated with a*value.a*value was negatively correlated with b*value and h*value,and b*value was positively correlated with c*value and h*value.Order of the comprehensive score of principal component analysis was Guoguang(0.83)＞Jonagarin(0.33)＞Golden Crown(0.32)＞Ruixue(0.27)＞Huayue(0.24)＞Huahong(0.10.10)＞Ruixiang Hong(0.04)＞Dounan(-0.20)＞Venus Gold(-0.31)＞Hanfu(-0.34)＞Ruiyang(-0.41)＞Huaqing(-0.86).According to the comprehensive score,the top five apples are Guoguang,Jonah King,golden crown,Ruixue and Huayue,indicating that per-formance of the quality of these five apple varieties is better in the test year.
万方数据
维普
