| Summary: | 碩士 === 國立屏東科技大學 === 農園生產系所 === 98 === Eggplant (Solanum melongena L.) is one of the important vegetables in the word. In the cultivation the most severe soil-borne diseases affecting eggplant are fungal wilts, bacterial wilts and root-knot nematodes. Several eggplant related species have been reported to be a source of resistance to several pests and diseases. The wild species S. torvum has been evaluated as a valuable source for resistance to soil borne diseases as well as other biotic and abiotic factors. The objective of this study is to determine the crossability relationship between eggplant (S. melongena) and S. torvum. Hand pollination was performed and fertilization event and the characteristics of interspecific hybrids were investigated. The eggplant cultivars ‘Purple Bride’ and ‘Pai Chieh’ were used as the female parent and S. torvum used as the male parent. In pollination studies, the interspecific compatibility was not only due to different cultivars but also individual combinations.
A total of 21 seedling were obtained after interspecific hybridization, in the combinations ‘Purple Bride’× S. torvum and ‘Pai Chieh’ × S. torvum. Among the 5 seedlings, which were obtained from the combinations P1xT A-2, P24xT B-1, W10xT C-1, W10xT D-1 and W10xT G-2, are more similar to S. torvum in leaf margin, inflorescence type and spin positions. However, the lavender flowers of these seedlings resembled to S. melongena. The pollen stainability of the parent S. melongena ‘Purple Bride’, ‘Pai Chieh’ and S. torvum were above 98％. Pollen viability of the hybrids of P1×T A-2, P24xT B-1, W10xT C-1, W10xT D-1 and W10xT G-2 were between 0％~9.8％. In the GOT isozymes analysis, the hybrids of P1×T A-2, P24xT B-1, W10xT C-1, W10xT D-1and W10xT G-2 possessed parent-specific bands.
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