以33份黄瓜核心种质为试材，通过苗期接种和成株期自然发病，调查黄瓜种质的生态类型、性型、瓜皮色、瓜形、瓜刺色、瓜瘤大小、瓜刺瘤稀密及枯萎病病情指数，分析了不同黄瓜种质对枯萎病的抗性及抗性分布频率。结果表明，在供试的33份黄瓜种质中，高抗种质3份，占9.09%；抗病种质占33.33%，中抗种质占21.21%；感病种质占30.30%，高感种质占6.06%。具有欧洲温室型亲缘关系的种质较华南型种质抗枯萎病，强雌黄瓜较雌雄黄瓜抗枯萎病，皮色较绿的黄瓜对枯萎病抗性较强，无瘤黄瓜较中瘤和大瘤黄瓜抗枯萎病，瓜刺瘤密种质较刺瘤稀的抗枯萎病。利用其中6份黄瓜自交系配制6份杂交1代，通过苗期和成株期抗性鉴定，表明黄瓜枯萎病抗性为数量性状遗传，抗性为显性基因控制，抗病与感病亲本的杂交1代抗病性介于双亲抗性均值与强抗病亲本之间，抗病性表现出中亲优势，没有发现超亲优势。

With 33 cucumber core germplasms used as experimental materials， through inoculation at the seedling stage and the natural incidence at the adult stage， the ecological types， sexual type， rind color， fruit shape， thorn color， tumor size， thorn and tumor density and disease index of Fusarium wilt were investigated， and the resistance of different cucumber germplasm to Fusarium wilt and resistance distribution frequency were analyzed. The results indicated that among 33 germplasms， there were 3 high resistant germplasms， accounting for 9.09%， and germplasms which are resistant， moderate resistant susceptible and high susceptible accounted for 33.33%， 21.21%， 30.30%， and 6.06% respectively. European greenhouse cucumbers are more resistant than South China cucumbers. Strong female cucumbers are more resistant than monoecious cucumbers. Green rind cucumbers are more resistant than light green rind cucumbers. No tumor cucumbers are more resistant than medium-sized and big tumor cucumbers. The cucumbers of dense thorn and tumor are more resistant than scarce thorn and tumor. By using six cucumber inbred lines， six F1 hybrids were produced to research the genetic regularity and expression form of Fusarium wilt of cucumber. Through resistance identification at the seedling stage and the adult stage， we can make a conclusion that the Fusarium wilt resistance of cucumber belonged to quantity heredity controlled by dominant genes. Resistance of F1 hybrids is between mid-parent value and high-parent value. Resistance is mid-parent heterosis， no heterobeltiosis expressed.

S436.421.1

甘肃省农业科学院中青年基金(2016GAAS45)；国家大宗蔬菜产业技术体系兰州综合试验站(CARS-23-G-19)；农业部西北地区蔬菜科学观测实验站资助项目(2015-A2621-620321-G1203-066)。