Characteristics of Hybrid Individuals Resulting from the Hybridization of Cucurbita maxima and Cucurbita moschata

초록

Interspecific hybridization between Cucurbita maxima and C. moschata was conducted to improve fruit quality, storability, and agronomic performance. This study evaluated mor- phological and physicochemical traits of selected F1 hybrid progenies, including fruit weight, length, diameter, flesh thickness, total soluble solids (TSS), and color parameters (L*, a*, b*). Significant variation was observed among combinations. The 15-19-7S × 3-8-2 cross produced the largest fruits (1.97 kg), while 3-3-1 × 15-11-2S showed compact morphology and stable internal structure. Notably, 15-21-2S × 5-1-1 exhibited the highest TSS (16.28 캛rix) and vivid yellow coloration, indicating high carotenoid content. Among tested genotypes, 3-3-1 × 15-11-2S was most suitable for general market needs due to balanced size and quality, while 15-21-2S × 5-1-1 showed enhanced sweetness and functional properties. Fruit set limitation in interspecific hybrids was alleviated using 2,4-D at 50－500 ppm. These findings suggest the potential of interspecific hybridization for developing high-quality winter squash cultivars with enhanced consumer traits and breeding utility.

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