【摘要】 试验选用14个番茄品种进行种子萌发期、幼苗期耐盐性评价。对种子萌发期的相对发芽势和相对发芽率进行聚类分析,14个番茄品种分为耐盐性强的品种5个和耐盐性弱的品种9个;对幼苗期的盐害指数、相对电导率、相对茎粗、相对茎叶干质量、相对根干质量5项指标进行聚类分析,14个番茄品种分为耐盐性强的品种4个和耐盐性弱的品种10个。结果表明:14个番茄品种两个发育阶段的耐盐性不完全一致。更多还原

【Abstract】 Salt tolerance of 14 tomato(Lycopersicon exculentum Mill.)genotypes at seed germination stage and seedling growth stage were evaluated in this experiment.During germination stage,clustering analysis was conducted on relative germination trend and relative germination percentage of tomato seed,and 14 tomato genotypes were divided into two groups.The first group of 5 tomato genotypes held high tolerance to salt stress,while the other 9 were moderate tolerant.During seedling growth period,clustering analysis was conducted on salt stress for five indicators including salt injury index,relative electric conductivity of leaf,relative stem diameter,relative dry weight of stem and leaf,relative dry weight of root.Among the 14 tomato genotypes,4 had strong salt-tolerance and 10 had weak salt-tolerance.The results showed the salt-tolerance of two tomato growth stages(seed germination stage and seedling growth stage)were not exactly coherence.更多还原