Exploration of Foreign Maize Inbred Lines with Broad Spectrum Resistance to Northern Corn Leaf Blight and Preliminary Identification of Resistance Genes
XIAOMing-Gang1,2,, SONGFeng-Jing3, SUNBing2, ZUOXin4, ZHAOGuang-Shan5, XINAi-Hua2, LIZhu-Gang2,*, 1 Postdoctoral Programme, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, Heilongjiang, China2 Heilongjiang Province Cold Region Crop Physiology and Ecology Laboratory / Key Laboratory of Crop Molecular Design and Germplasm Innovation in Heilongjiang Province Tillage and Cultivation Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, Heilongjiang, China3 Qingdao Academy of Agricultural Science, Qingdao 266109, Shandong, China4 Ruaral Energy Sources Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, Heilongjiang, China5 Agricultural Technology Extension Station of Jiamusi City, Jiamusi 154002, Heilongjiang, China 通讯作者:* 通信作者(Corresponding author): 李柱刚, E-mail: lizhugang@163.com* 通信作者(Corresponding author): 李柱刚, E-mail: lizhugang@163.com 收稿日期:2017-08-30 接受日期:2018-01-8 网络出版日期:2018-01-30 版权声明:2018作物学报编辑部作物学报编辑部 基金资助:本研究由黑龙江省博士后基金项目(LB-Z14186)资助 作者简介: -->xiaoyang8076@163.com
关键词:玉米自交系;大斑病;抗性评价;遗传分析 Abstract From 2014 to 2016, forty-three maize inbred lines introduced from the United States, France, Russia and Germany, were identified and evaluated for resistance to northern corn leaf blight (NCLB). The results showed that seven, one and six maize inbreds were highly resistant, resistant or moderately resistant to NCLB, accounting for 32.6%. Exserohilum turcicum was used to test the F2 populations for analyzing the inheritance of NCLB resistance in the seven highly resistance maize inbred lines. Genetic analysis suggested that A04, F02, F05, and R01 of these inbred lines probably carried a single dominant gene conferring their resistance to NCLB. The reaction patterns to isolates 0, 1, 2, N, and 123N of E. turcicum showed that new genes resistance to NCLB were most likely present in A04, F02, F05, and R01. The results provided useful information on the introduction of maize germplasms and genetic improvement for resistance to NCLB.
遗传分析表明, 自交系A04、F02、F05和R01对玉米大斑病的抗性均受1对显性单基因控制。因此, 利用当前优势小种0和1号、2号生理小种、N号生理小种及强致病力小种123N对A04、F02、F05和R01进行了抗谱分析。生理小种0、1、2、N及123N对A04、F02、F05和R01均无毒性, 而强致病力小种123N对Ht1、Ht2、Ht3和HtN均有毒性, A04、F02、F05和R01对4个生理小种的反应型均不同于Ht1、Ht2、Ht3和HtN的反应型(表3)。说明自交系A04、F02、F05和R01对大斑病的抗性不同于已定位的抗大斑病基因Ht1、Ht2、Ht3和HtN, 可能携带新的抗病基因。 Table 3 表3 表34份玉米自交系对0、1、2、N和123N的反应型 Table 3Infection types in the four foreign inbred lines to isolates 0, 1, 2, N, and 123N of northern corn leaf blight
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