中文摘要：

选择来源于不同地区的8个不同番茄品种为试验材料,通过盆栽试验,在大棚内模拟昆明地区臭氧衰减20%时的紫外辐射强度（5 k J/m2）,研究不同番茄品种生长和生理特征对UV-B辐射增强响应的差异。结果表明：（1）不同品种番茄株高、根长和生物量均随UV-B辐射增强而下降,其中‘台湾圣女’（TS）生物量下降60.90%,‘樱桃小番茄’（YT）生物量下降最少,为14.23%。（2）UV-B辐射下,不同品种番茄叶片光合色素均有所降低,超级大明星番茄的叶绿素a,b和类胡萝卜素分别降低62.13%;71.24%和66.52%;叶片丙二醛含量均有所上升,其中‘中蔬四号’番茄的叶片丙二醛含量上升747.47%。（3）不同品种番茄果实可溶糖含量和产量分别下降4.03%～37.80%和4.03%～37.80%;除‘雄霸天下’番茄果实有机酸含量下降外,其他各品种番茄果实中的有机酸含量上升12.93%～301.67%。（4）UV-B辐射下,不同品种番茄的综合响应指数为-55.46～242.00,各品种依次为：‘天泽上海908F1’（TZS）〉‘天泽毛粉802’（TZM）〉‘超级大明星’（CJ）〉‘台湾圣女’（TS）〉‘樱桃小番茄’（YT）〉‘中蔬四号’（ZS）〉‘天皇明星’（TH）〉‘雄霸天下’（XB）。总之,UV-B辐射会降低番茄产量和品质,‘天泽上海908F1’番茄对UV-B辐射的抗性最强,‘雄霸天下’番茄最敏感。

英文摘要：

Eight cultivars of tomatoes from different habitat were chosen as experimental material. Pot experiments were conducted to simulate enhanced UV-B radiation under ozone declined 20% in the green house in order to study the different responses of growth and physiological properties of eight cul- tivars of tomatoes to enhanced UV-B radiation （ 5 kJ/m2 ）. The results showed that ： （ 1 ） the plant height, root length and biomass of tomatoes decreased under enhanced UV-B radiation. The biomass of Lycopersicon esculentum＇ Taiwanshengnv＇ （TS） and L. esculentum var. cerasiforme （YT） decreased by 60. 90% and 14.93%. （2） Under enhanced UV-B radiation, the contents of pigments decreased. The contents of chlorophyll a, chlorophyll b and carotenoid in leaves of L. esculentum ＇ Chaojidam- ingxing＇ （CJ） decreased by 62. 13%, 71.24% and 66. 52%, respectively. The contents of malondialdehyde （MDA） in leaves of different tomato varieties increased, especially L. esculentum ＇Zhong- shu IV＇ （ZS） increased by 747.47%. （3） The contents of soluble sugar and total fruit yield of to- matoes decreased by 4. 03% ～ 37.80% and 4. 03% - 37.80%. The contents of organic acids in fruits of tomato increased by 12.93% ～ 301.67% , except for L. esculentum ＇ Xiongbatianxia＇ （ XB ） （4） The comprehensive response index of tomatoes to enhanced UV-B radiation was -55.46-- 242. 00 with sequence： ＇Tianzeshanghai 908F1＇ （TZS） 〉 ＇Tianzemaofen 802＇ （TZM） 〉 ＇ Chaojidamingx- in＇ （ C J） 〉 ＇ Taiwanshengnv＇ （TS） 〉 ＇ Yingtaoxiaofanqie＇ （YT） 〉 ＇ Zhongsusihao IV＇ （ZS） 〉 ＇ Tianhuangmingxin＇ （TH） 〉 ＇ Xiongbatianxia＇ （XB）. In general, yield and quality of tomatoes de- crease under enhanced UV-B radiation. Tomato ＇ Tianzeshanghai 908F1 ＇ is the most tolerant variety and tomato ＇ Xiongbatianxia＇ is the most sensitive one.