为探讨低温对番茄生殖生长的影响，为耐低温番茄品种选育及栽培措施提供理论依据。对9个不同基因型番茄材料分别进行了低温下的种子发芽试验、苗期耐寒性鉴定、苗期自然低温处理对后期番茄生长及坐果率和畸形果发生的影响试验。结果表明，低温使部分基因型番茄种子的发芽率降低，延长了发芽时间；不同基因型番茄材料苗期对低温反应不同，表现出较大差异；田间自然低温对番茄植株生长速度、开花、结果均造成不同程度的影响。综合分析试验结果认为，番茄材料LA3969耐低温综合能力最强，德奥特7845综合表现较好，其次是JX-701和华美168，其余材料耐低温综合能力表现一般，对照7363表现最差。

To investigate the effects of low temperatue on reproductive growth of tomatoesand to provide reference for the breeding and cultivation method of low temperature resistant tomato cultivars, 9 different genotypes of tomato materials were used in this study to conduct experiments of seeds germination under low temperature, cold tolerance identificationat seedling stage, effect of natural low temperature treatment at seedling stage on tomato growth at late stage, fruit setting rate and fruit malformation. The results showed that low temperature reduced the seed germination rate and prolonged the germination time in some tomato genotypes. Different genotypes showed different responses to low temperature at seedling stage. The natural low temperature in the field affected the growth rate, flowering and fruiting of tomato plants to varying degrees. In general, LA3969 showed the strongest comprehensive low-temperature resistance, Deaote 7845 showed a good comprehensive performance followed by JX-701and Huamei 168, other materials showed mediocre comprehensive low-temperature resistance, while the control 7363 showed the worst performance.

S641.2

国家大学生创新创业训练项目(202110740025)；河西学院第十二批大学生科技创新项目(129)。