Evaluation on Fruit Quality of 15 Pomegranate Varieties(Lines)Based on Membership Function Method
In the study,5-year plants of 15 pomegranate varieties(lines)introduced from Shandong Province and planted in Xingyang of Henan Province were used as experimental materials to determine their main economic characters and fruit internal and external quality indicator.The membership function method of fuzzy mathematics was used to evaluate the fruit quality of each variety(line).The results showed that differ-ent degrees of variation in fruit quality were observed among the 15 pomegranate varieties(lines).The varia-tion of total acid content was high with the coefficient of variation(CV)as 101.66％,and the content changed between 2.55 mg/g and 21.64 mg/g.The plant yield per plant,fruit cracking rate,single fruit weight,total kernel weight,hundred seed weight,skin thickness,total sugar content,sugar-acid ratio,reduced ascorbic acid and lignin content were 0.74 to 8.85 kg,0.00 to 52.17％,141.65 to 509.56 g,75.68 to 283.32 g,20.95 to 41.00 g,1.81 to 6.70 mm,277.14 to 457.17 mg/g,12.80 to 178.59,321.32 to 651.70 µg/g,and 0.18 to 0.37 mg/mg,respectively,and their CV values were all greater than 10％,suggesting a large degree of varia-tion among varieties(lines).The fruit juice yield,edible rate and soluble solid content were 75.51％to 83.51％,44.86％to 68.02％,and 14.47％to 16.33％,respectively,and their CV values were less than 10％being relatively stable.According to the average membership function value,the 15 pomegranate varieties(lines)were divided into three categories.The first category including Zhuangyuanhong,Juzi Mi,Erbai,Qing-pi Tian,Gangliu,Daqingpisuan and Damaya with the membership function value ≥0.6,which had excellent quality.Five varieties including Taishanhong,Dahongpitian,Shuanghongbaoshi,Mengyanghong and Fayahong had the membership function value ranging from 0.5 to 0.6,so they were graded as varieties(lines)with me-dium fruit quality.The membership function value of Xiehuatian,Mudan Pomegranate and Qingpisuan were less than 0.5,so they had poor quality.In conclusion,the fruit quality of the 15 pomegranate varieties(lines)showed different degrees of variation,and according to the fruit quality from high to low,they were sequenced as Zhuangyuanhong,Juzi Mi,Erbai,Qingpi Tian,Gangliu,Daqingpisuan,Damaya,Taishanhong,Dahong-pitian,Shuanghongbaoshi,Mengyanghong,Fayahong,Xiehuatian,Mudan Pomegranate and Qingpisuan.These results could provide references for selection of special pomegranate varieties.
PomegranateFruit qualityCoefficient of variationMembership function evaluation method
万方数据
维普
