| 摘要: |
| 【目的】筛选适合陕北地区基质栽培的高品质樱桃番茄品种，解决该地区适宜基质栽培的樱桃番茄品种缺乏的问题。【方法】以15个樱桃番茄品种为试材，测定各品种果实的横径、纵径、果形指数、硬度、单果质量、单株产量、糖酸比及可溶性固形物、还原糖、可滴定酸、维生素C、番茄红素、可溶性总糖含量等13项指标，比较各品种间上述指标的差异，并对各指标的相关性进行Pearson分析，运用主成分分析法、模糊隶属函数综合评价法，对樱桃番茄各产量和品质指标进行评价，从中筛选出适合陕北地区基质栽培的樱桃番茄品种。【结果】不同樱桃番茄品种间各指标均存在显著差异，变异系数为13.60%~54.15%。可溶性固形物含量与可溶性总糖、还原糖含量呈极显著正相关，与果实纵径、横径呈极显著负相关；维生素C含量与番茄红素、可滴定酸含量呈极显著正相关；可滴定酸含量与糖酸比、果实纵径、果形指数呈极显著负相关；单果质量与果实硬度呈显著正相关，与可溶性固形物含量、糖酸比呈极显著负相关；单株产量与可滴定酸含量呈显著正相关。利用主成分分析法提取出4个主成分，其累积方差贡献率达83.408%，其中影响樱桃番茄综合品质的因子分别为质量因子（单果质量、单株产量）、果形因子（纵径、果形指数）、营养因子（维生素C和番茄红素含量）和口感因子（可滴定酸含量）。运用主成分分析法筛选出排名前5的品种为黄金贝（0.662）、浙樱粉1号（0.526）、红玉（0.483）、粉贝贝（0.374）和粉佳人（0.334）；运用模糊隶属函数综合评价法筛选出综合排名前5的品种为红玉（0.638）、粉佳人（0.587）、紫贝贝（0.551）、浙樱粉1号（0.539）和黄金贝（0.504）。主成分分析和模糊隶属函数综合评价结果基本一致。【结论】黄金贝、粉佳人、浙樱粉1号、红玉等4个樱桃番茄品种的综合品质优于其他品种，适于陕北地区基质栽培。 |
| 关键词: 樱桃番茄 品种筛选 主成分分析 模糊隶属函数综合评价 设施园艺 陕北地区 |
| DOI： |
| 分类号: |
| 基金项目:陕西省农业科技创新转化项目（NYKJ-2019-YL02,NYKJ-2020-YL-09）；西北农林科技大学试验示范站（基地）科技创新与成果转化项目（TGZX2019-23）；西安市科技计划项目（201806113YF01NC09（3）） |
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| Selection of cherry tomato cultivars suitable for substrate cultivation in northern Shaanxi |
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ZHAO Yuhong,SUN Tao,ZHU Keyu,et al
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| Abstract: |
| 【Objective】High quality cherry tomato cultivars suitable for substrate cultivation in northern Shaanxi were screened to solve the problem of lacking suitable cultivars.【Method】A total of 15 cultivars of cherry tomatoes were selected and 13 indexes including transverse diameter,longitudinal diameter,fruit shape index,hardness,single fruit weight, yield per plant,sugar acid ratio and soluble solids,reducing sugar,titratable acid,vitamin C,lycopene and soluble total sugar content were measured.The differences between indexes were compared and evaluated based on Pearson correlation analysis,principal component analysis (PCA) and fuzzy comprehensive evaluation method of membership grade function.Then,cultivars suitable for substrate cultivation in northern Shaanxi were suggested.【Result】There were significant differences among different cherry tomato cultivars,and the coefficients of variation were 13.60%-54.15%.The content of soluble solids was significantly positively correlated with contents of soluble total sugars and reducing sugars,and negatively correlated with longitudinal diameter and transverse diameters of fruits.The content of vitamin C was positively correlated with contents of lycopene and titratable acid.The titratable acid content was negatively correlated with sugar acid ratio,fruit longitudinal diameter and fruit shape index.The single fruit weight was positively correlated with fruit hardness,and negatively correlated with soluble solid content and sugar acid ratio.The yield per plant was positively correlated with the titratable acid content.PCA obtained four principal components with cumulative variance contribution rate of 83.408%,and factors affecting comprehensive quality of cherry tomato were weight factors (single fruit weight and per plant yield),fruit shape factors (longitudinal diameter and fruit shape index), nutrition factors (vitamin C and lycopene content) and taste factor (titrable acid content).The top 5 cultivars by PCA were Huangjinbei (0.662),Zheyingfen No.1 (0.526),Hongyu(0.483),Fenbeibei(0.374) and Fenjiaren(0.334).The top 5 cultivars by fuzzy membership function comprehensive evaluation method were Hongyu(0.638),Fenjiaren(0.587),Zibeibei(0.551),Zheyingfen No.1(0.539) and Huangjinbei(0.504).The results of PCA and fuzzy membership function were basically consistent.【Conclusion】Huangjinbei,Fenjiaren,Zheyingfen No.1 and Hongyu had better comprehensive quality than other cultivars and were suitable for substrate cultivation in northern Shaanxi. |
| Key words: cherry tomatoes cultivars screening principal component analysis comprehensive evaluation of fuzzy membership function protected horticulture northern Shaanxi |
