Abstract:
【Objective】 To comprehensively evaluate the high generation inbred lines of cherry tomato and screen the high quality and multi-resistant parental materials in the hope of providing germplasm resources for cherry tomato breeding.
【Methods】 42 high generation inbred lines of cherry tomato were used as materials to analyze and evaluate 12 traits (fruit transverse diameter, fruit longitudinal length, flesh thickness, fruit weight per fruit, soluble solid content, total acid content, solid acid ratio, soluble sugar content, fructose content, sucrose content, malic acid content, vitamin C content) by factor analysis. The resistance genes were detected by PARMS method.
【Results】 The top three in the overall ranking were No. 599, No. 596 and No. 601. The three fruits had good shape, high soluble solid content, high soluble sugar, fructose and vitamin C content, and poor resistance, so they could be used as high-quality cherry tomato parent resources. No. 580 ranked 4th overall, with good quality and 5 resistance genes, which could be used as high-quality multi-resistance cherry tomato parental resources. The overall quality ranking of No. 531 was 24, but it had more resistance genes and contained 6 pure resistance genes, which could be used for breeding resistant cherry tomato.
【Conclusion】 Three high-quality cherry tomatoes, one high-quality disease-resistant cherry tomato material and one disease-resistant cherry tomato are selected, which can be used as parent resources for cultivating cherry tomatoes with different characteristics.