先锋公司在我国审定玉米杂交种亲本自交系的系谱分析

研究和整理2001～2019年先锋公司在我国审定的玉米杂交种的亲本自交系及其系谱,绘制SS和NSS不同类群种质系谱图。结果表明,美国先锋公司共审定53个玉米杂交种,主要集中在以山东、河南为主的黄淮海夏玉米区和以吉林为主的东北春玉米区。SS群种质主要是B73与PHG39背景,其中,骨干自交系PH09B及其衍生系PH890基础形成了8个衍生系,包括PH6WC、PH6JM、PHJEV、PHTEF、PH11V8、PH18Y6、PH1JP8和PH12P3,这8个衍生系组配了14个玉米杂交种;NSS群的种质主要是OH07、Iodent与Lancaster为背景,以OH07种质为主,其中,骨干自交系PHA9B、PHN46和PH4CN形成了9个衍生系,包括PH4CV、PH2N1、PH5AD,PHPM0、PH1N2D、PH11YB、PH11VR、PH12RP和PH12TB,共组配了18个审定玉米杂交种。

Pedigree Analysis on Parental Inbred Lines of Chinese Approved Maize Hybrids Released by Pioneer Corporation

Parental inbred lines of pedigree information of maize hybrids released by Pioneer Corporation in China from 2001 to 2019 were collected and sorted out. The pedigree map of parental inbred lines was drawn including SS and NSS populations. The results indicated that 53 maize hybrids from Pioneer Corporation were most released in Huanghuai plan summer maize region focused on Shandong and Henan province and Northeast spring maize region focused on Jilin province during the past 19 years. The background of SS population includes B73 and PHG39, the most as derivative inbred lines of PHG39.Basing backbone line PH09B and its derivative line PH890, eight inbred lines, PH6WC, PH6JM, PHJEV, PHTEF, PH11V8, PH18Y6, PH1JP8, PH12P3 were originated. These inbred lines combined 14 released hybrids. The background of NSS 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.