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【目的】利用solanum pennellii渐渗系群体(Introgression Lines,ILs)对番茄果实耐压力及主要果实性状进行测试,初步分析彼此之间的相关性。【方法】在各渐渗系材料达到始熟期15 d后,对果实各主要性状进行测定,利用Dunnett测验和Pearson关联分析,分别进行方差分析和果实性状间的相关性分析。【结果】通过各独立试验间的相关性分析,证实用果实耐压力来评价果实硬度的方法是可行的,且符合手工挤压测试时果实承受的压力情况。各性状间的相关性分析初步表明,果实耐压力(CRF)共计与7个性状存在相关性,与可溶性固形物含量(SSC)存在显著负相关(r=-0.225*),与单果重(FW)、果肉厚(PT)、果型指数(FSI)、果实纵径(FLD)和果实横径(FTD)5个果实性状存在极显著正相关,相关系数介于r=0.337**~r=0.667**,与1个性状,即用硬度计测试的果实硬度(FIR)存在显著相关,相关系数为r=0.227*。其它性状间彼此存在不同程度的相关性。【结论】系统完善了番茄果实耐压力与其它主要果实性状间的相关性,为番茄果实硬度调控机制的进一步解析和遗传改良奠定一定的基础。
【Objective】 The objective of this study was to test the stress tolerance and the main fruit traits of tomato fruits by using Introgression Lines (ILs) from solanum pennellii, and to analyze the correlation between them. 【Method】 The main characters of fruits were determined 15 d after the initial stage of infiltration system was reached. Dunnett test and Pearson correlation analysis were used to analyze the correlation between variance analysis and fruit traits respectively. 【Result】 Through the correlation analysis between independent experiments, it is feasible to confirm the fruit firmness by stress tolerance of fruit, and it is in accordance with the pressure of fruit under manual extrusion test. Correlation analysis of the traits showed that there was a significant correlation between stress tolerance (CRF) and seven traits, negatively correlated with soluble solid content (SSC) (r = -0.225 *), There were significant positive correlations among five fruit traits such as PT, FSI, FLD and FTD. The correlation coefficients ranged from r = 0.337 ** r = 0.667 **, a significant correlation was found with one trait, the fruit firmness (FIR) measured with a durometer, with a correlation coefficient of r = 0.227 *. Other traits have different degrees of correlation with each other. 【Conclusion】 The correlation between stress tolerance of tomato fruit and other major fruit traits was systematically improved, which laid a foundation for further analysis and genetic improvement of tomato fruit hardness regulation mechanism.