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Comparison of disease resistance of maize varieties from the 1950s to the 2000s in China

文献类型： 外文期刊

作者： Sun, Qi 1 ; Zhang, Degui 1 ; Li, Xinhai 1 ; Jin, Qiming 3 ; Guo, Xinping 4 ; Weng, Jianfeng 1 ; Ci, Xiaoke 1 ; Hao, Zhuan 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Dept Crop Genet & Breeding, Beijing 10081, Peoples R China

2.Shandong Acad Agr Sci, Maize Inst, Jinan 250100, Shandong, Peoples R China

3.Jilin Acad Agr Sci, Changchun 130124, Jilin, Peoples R China

4.Jining Acad Agr Sci, Jining 272131, Shandong, Peoples R China

关键词： maize (Zea mays L);variety;disease resistance;era

期刊名称：MAYDICA （ 影响因子：0.542； 五年影响因子：0.605 ）

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收录情况： SCI

摘要： The objective of this investigation was to analyze trends in diseases resistance along with genetic gain. Experimental materials consisted of maize varieties seiected from each decade beginning with the 1950s. These varieties were evaluated for resistance to maize dwarf mosaic virus (MDMV), maize rough dwarf virus (MRDV), common smut disease (CSD) and head smut disease (HSD) in several different locations. Artificial inoculation was adopted for infection with MDMV and HSD, whereas natural infection was used for infection MRDV and CSD. Results indicated that resistance of the newer varieties to MDMV, CSD, and HSD was greater than that of older varieties, but the correlation to decades was not significant. To date, no variety tested in China has shownresistance to MRDV, which is likely due to a lack of maize germplasm resources resistant to MRDV in China. So the next goal will be to import new germplasm resources and select resistant germplasm as the basis of breeding resistant varieties.

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