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首页> 外文期刊>HortScience >Inheritance of Resistance to Phytophthora Crown Rot in Cucurbita pepo
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Inheritance of Resistance to Phytophthora Crown Rot in Cucurbita pepo

机译：苏达察辣椒抗植物抗植物的遗传

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摘要

Phytophthora crown rot, caused by Phytophthora capsici Leonian, is a devastating disease in commercial squash (Cucurbita pepo L.) production across the United States. Current management practices rely heavily on the use of chemical fungicides, but existence of fungicide-resistant pathogen populations has rendered many chemicals ineffective. Host resistance is the best strategy for managing this disease; however, no commercial cultivars resistant to the pathogen are currently available. Resistance to Phytophthora crown rot in PI 181761 (C. pepo) is an important genetic resource for squash breeders worldwide; however, the underlying genetic basis of resistance in PI 186761 that would allow designing of sound breeding strategies is currently unknown. The goal of the current study was to determine the inheritance of resistance in breeding line #186761-36P, a resistant selection of PI 181761, using phenotypic data from F-1, F-2, and backcross populations derived from a cross between #181761-36P and a susceptible acorn-type cultivar, Table Queen. The results indicated that resistance in #181761-36P is controlled by three dominant genes (R4, R5, and R6). Introgression of these genes into susceptible cultivar groups of C. pepo will provide an important tool in the integrated management of Phytophthora crown rot.
机译：由植物北康氏康氏菌菌引起的植物植物腐败是在美国的商业南瓜（Cucurbita Pepo L.）生产的毁灭性疾病。目前的管理实践严重依赖于化学杀菌剂的使用，但耐杀菌剂的病原体种群的存在使许多化学品无效。宿主是管理这种疾病的最佳策略;但是，目前没有对病原体的耐抗性的商业品种。 PI 181761（C.Pepo）在PI 181761（C.Pepo）的抗性抗植物腐蚀是全球壁球育种者的重要遗传资源;然而，PI 186761中抵抗的潜在遗传基础，允许设计声音育种策略是未知的。目前的研究的目标是确定养殖线抵抗的遗传＃186761-36p，抗性选择pi 181761，使用来自f-1，f-2的表型数据，以及从＃181761之间的交叉的回复群体。 -36p和敏感的橡子型品种，表王。结果表明，抗性在＃181761-36p中由三个优势基因（R4，R5和R6）控制。这些基因的迟滞到敏感品种C.Pepo的敏感群体将为植物植物植物腐蚀的综合管理提供重要的工具。

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