番茄品质性状的遗传多样性研究

以美国和欧洲种植的11份番茄地方品种、国内部分地区1950—1980年种植过的21份常规品种和12份自育自交系为材料，对它们的主要物理特性和化学特性进行了研究。结果表明，11个被测性状在基因型间都有极显著的差异，但多数性状的广义遗传力较低。和欧美品种相比，国内品种的果型偏大、果肉偏软、果酱含量和可溶物含量偏少、番茄红素偏低。对品质特性的遗传多样性和品质改良的潜力进行了讨论。

Study on Diversity of Quality Characteristics in Tomato

Tomato lines including 11 landraces from America and Europe (A group), 21 entries from old cultivars planted in some districts of China during 1950-1980 (B group), and 12 inbred lines (C group) were used to study their diversity in physical and chemical characteristics. Experimental results showed that there were very significant differences among genotypes in 11 tested traits. However, most traits generally displayed a low wide heritability. Comparing with A group, B group had a bigger but softer fruit, lower puree and soluble solid content, less lycopene. The diversity of quality characteristic and potential of improving quality were discussed.