关键词: 甜瓜, 四倍体, 诱变育种, 品种

Abstract:

‘Duotian 1’is a new tetraploid hybrid of melon. Its growth is vigorous with thicker cotyledon，bigger leaf area，and shorter internode than those of the common diploid plants. The plant set fruits on secondary and tertiary branches easily. The maturity period of fruit is 30–35 d. Its fruits are uniform in oval shape，big scar，and white rind. The white flesh is 2.5 cm thick，good quality with crisp texture，fragrant flavour，and 15.3% soluble solids content in centery. The average fruit weight is 0.47 kg. It yields about 42 t · hm^-2. Its fruit is tolerance to storage and transportation. The cultivar is resistant to stem blight and downy mildew. It is suitable for planting in protected field.

Key words: melon, tetraploid, mutation breeding, cultivar