耐寒大果型番茄品种优质、高产、抗病性综合评价OA

To screen out tomato varieties suitable for overwintering cultivation in greenhouses in Yanqing district with high quality,high yield,and disease resistance,seven large-fruited tomato varieties(with Ginuobili as the control)were selected.The botanical traits,yield,fruit quality,and disease resistance of each variety were systematically compared and analyzed,and a comprehensive evaluation was conducted using principal component analysis.The results showed that in terms of growth period,Qinchuan 8733 had the shortest duration(155 d),while Ginuobili(CK)had the longest(169 d).XL-1043 exhibited the strongest growth vigor.In terms of yield,Jinpeng 101 had the highest yield,reaching 9 433 kg per 667 m2,which was a significant increase of 23.2％compared to CK,while XL-1043 had the lowest yield,a significant decrease of 41.1％compared to CK.Regarding fruit quality,Shengxia 1168,Qinchuan 8733,and XL-1043 showed outstanding comprehensive performance in key nutritional indicators such as soluble solids content,vitamin C content,and lycopene content.Shengxia 1168 had the highest lycopene content(60.004 mg/kg),and Jinpeng 101 had the largest single fruit weight(249.6 g).In terms of disease resistance,Jinpeng 101 showed immunity to both leaf mold and powdery mildew,exhibiting the best comprehensive disease resistance.Principal component analysis extracted four principal components with a cumulative contribution rate of 92.830％,effectively reflecting the comprehensive performance of the varieties.The comprehensive evaluation ranked the varieties as follows:Shengxia 1168＞Jinpeng 101＞Qinchuan 8733＞XL-1043＞XL-10139＞Chunfu 25＞Ginobili(CK).In conclusion,Shengxia 1168 had the best comprehensive performance,while Jinpeng 101 had outstanding yield and strong disease resistance,making it suitable for large-scale promotion.Qinchuan 8733 had excellent quality,suitable for the high-quality fresh fruit market.All three varieties had high application and promotion value.