| 【Objective】The germplasm resources of chieh-qua were collected extensively and evaluated comprehensively in order to provide material basis for the innovation of germplasm and the cultivation of new chiehqua varieties.【Method】Twelve main agronomic traits of the whole growth period of chieh-qua were investigated, and the contents of vitamin C, total acid, total sugar and soluble solids were detected. The resistance to Fusarium wilt and phytophthora blight was investigated through the combination of field and artificial inoculation.【Result】Eighty-seven germplasm resources were collected, and there were significant differences in the shape, pericarp color, female flowers rate, disease resistance and nutritional quality. The average content of Vc in 20 germplasms with early maturity was 0.47 g/kg; total acidity was 1.198 g/kg; soluble total sugar content was 2.68%; ratio of sugar and acid was 2.27 and TSS content was 5.08%. Three germplasms (No. 15, No. 72 and No. 76) with strong female, high quality and strong resistance were obtained, among them, the resistance index to Fusarium wilt of No 76 was 37.67, reaching medium resistance, length was 16.5 cm, diameter was 6.3 cm, section was 1.4 cm, curcumbitate index was 2.6 and single fruit weight was 0.51 kg in. The first female node of the plant was 6.1, the branching rate in 30 nodes of the main vine was 13.6%, and the female flower rate was 73.4%.【Conclusion】We obtained 20 germplasms with early maturity, 3 germplasms with dark pericarp color, 3 germplasms with female flower rate over 70%, 13 germplasms with strong resistance to Fusarium wilt and 9 germplasms with good nutritional quality. The new variety ‘Yuebao’, which was bred with No. 76 germplasm, showed high yield, good variety, strong resistance and broad promotion prospect. |
