本文搜集和整理了2001-2019年先锋公司在中国审定的玉米杂交种种的亲本自交系及系谱来源,并对亲本自交系的系谱来源绘制了每个杂种优势群的系谱图。结果表明,这19年中美国先锋公司共审定53个玉米品种,主要是黄淮海和东北两大玉米主产区。母本群种质背景主要包含B73与PHG39,基本是PHG39的衍生系。骨干自交系PH09B为基础形成了8个衍生系,包括PH6WC、PH6JM、PHJEV、PHTEF、PH11V8、PH18Y6、PH1JP8、PH12P3,这8个衍生系组配了14个玉米杂交种。父本群的种质背景包含OH07、Iodent与Lancaster种质,以OH07的种质为主。骨干自交系PHN46和PH4CN形成了9个衍生系,PH4CV、PH2N1、PH5AD,PHPM0、PH1N2D、PH11YB、PH11VR、PH12RP、PH12TB,共组配了18个审定玉米杂交种。先锋种业公司在国内的品种选育策略上立足于已有的美玉米种质基础,在国内的生态环境下选择适应性强的自交系。
英文摘要:
Parental inbred lines and their pedigree origination of approved Pioneer seed industry maize hybrids from 2001to 2019 in China were collected and sorted out. The pedigree map of each heterotic population were made. The result indicated that 53 maize hybrids of Pioneer seed industry were approved most in Huanghuai plan and Northeast China during the 19 years. The background of female population includes B73 and PHG39, most as derivative inbred lines of PHG39. The backbone inbred line PHB09 formed 8 derivative inbred lines,PH6WC, PH6JM, PHJEV, PHTEF, PH11V8, PH18Y6, PH1JP8, PH12P3. The derivative inbred lines combined 14 approved hybrids. The background of male population includes OH07, Iodent and Lancaster germplasm, priority to OH07. The backbone inbred lines PHN46 and PH4CN formed 9 derivative inbred lines, PH4CV, PH2N1, PH5AD, PHPM0, PH1N2D, PH11YB, PH11VR, PH12RP, PH12TB. These inbred lines combined 18 approved hybrids. The Pioneer seed industry selected inbred lines adaptive to Chinese ecological environment basing original germplasm background.
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