适宜秋大棚种植的抗病、耐裂、高产番茄品种适应性评价OA

To screen disease-resistant,crack-tolerant and high-yield tomato varieties suitable for autumn greenhouse cultivation in the suburbs of Beijing,and address the production problems such as frequent fruit cracking,viral diseases and poor fruit flavor of local autumn-stubble tomatoes,a field experiment was conducted with 6 tomato varieties(taking'Tianfeng No.2'as the control).The growth period,growth indexes,fruit traits,disease resistance and yield-related parameters of each variety were determined,and a comprehensive adaptability evaluation was carried out by principal component analysis and membership function method.The results showed that'Jinuobili'had the highest plant height(176.4 cm),and its single fruit weight(207.6 g),yield per 667 m2(8 125.0 kg)and commercial fruit yield(5 958.4 kg)all showed outstanding performance.'Danxia'had a soluble solid content of 6.3％and a fruit cracking rate of only 29.2％.In terms of disease resistance,'Jinuobili'and'Danxia'were resistant to leaf curl disease,and immune to tomato yellow leaf curl virus disease and root-knot nematode disease.Principal component analysis and comprehensive evaluation indicated that'Danxia'(comprehensive evaluation value D=1.773)and'Jinuobili'(D=1.762)had the best comprehensive performance.In conclusion,'Danxia'and'Jinuobili'possess the characteristics of disease resistance,crack tolerance,high yield and good quality,which can serve as the preferred materials for the renewal of main tomato varieties in autumn greenhouses in the suburbs of Beijing and are suitable for further demonstration and promotion.