关键词:小麦; 白粉菌; 抗病基因; Pm2; 分子标记 Chromosomal Localization of the Gene for Resistance to Powdery Mildew in the Wheat Cultivar Wennong 14 SONG Wei1,2,**, SUN Hui-Gai1,2,**, SUN Yan-Ling2, ZHAO Zi-Hui1,2, WANG Xiao-Ming2, WU Xiao-Fei2, LI Hong-Jie2,* 1College of Life Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China
2 National Key Facility for Crop Gene Resources and Genetic Improvement / Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Fund: AbstractWennong 14 is a facultative wheat cultivar commercialized in Shandong province and the neighbouring provinces in the northern part of Yellow and Huai River Valleys Facultative Wheat Zone in China. In this study, an array ofBlumeria graminis f. sp.tritici (Bgt) isolates was used to test the resistance of Wennong 14 to powdery mildew at both seedling and adult stages. Among the 52Bgt isolates tested at the seedling stage, Wennong 14 was resistant to 43 and susceptible to 9 isolates. The virulence pattern of theseBgt isolates on Wennong 14 was similar to that of the known powdery mildew resistance genePm2, but the reactions of Wennong 14 to 11Bgt isolates differed from those of Ulka/8*Cc carryingPm2. Additionally, Wennong 14 was different from Tabasco carryingPm46 in the reaction to three of 26 isolates examined. Wennong 14 was highly resistant to a mixture ofBgt isolates at the adult stage. Using the segregation populations of F2 and F2:3 developed from the cross of Wennong 14 × Han 4564, genetic analysis demonstrated that the resistance againstBgt isolate E09 in Wennong 14 was controlled by a single dominant gene, designatedPmW14. Based on the results of molecular analysis,PmW14 was linked to markersXcfd8,Xcfd81, andSCAR203, with genetic distances of 7.5, 1.8, and 7.7 cM, respectively. These markers were previously localized on wheat chromosome 5DS in the region of 5DS-1-0-0.63 and linked to genePm2, therefore,PmW14 was most likely located on this locus and to be either the same as or an allele ofPm2.
Keyword:Wheat; Blumeria graminis f. sp.tritici; Resistance gene; Pm2; Molecular marker Show Figures Show Figures
表1 采用苗期活体鉴定比较汶农14与Ulka/8*Cc ( Pm2)对白粉菌菌株的反应型 Table 1 Comparison of reaction patterns to Blumeria graminis f. sp. tritici isolates between Wennong 14 and Ulka/8*Cc ( Pm2) using in vivo seedling test
菌株 Isolate
来源 Source
汶农14 Wennong 14
Ulka/8*Cc ( Pm2)
邯4564 Han 4564
Bg1
河北石家庄 Shijiazhuang, Hebei
1
0;
3
Bg2
河南郑州 Zhengzhou, Henan
0;
0;
3
Bg4
湖北武汉 Wuhan, Hubei
0
0;
3
Bg5
云南昆明 Kunming, Yunnan
0
0
3
Bg12
北京 Beijing
0;
0
3
Bg24
河南开封 Kaifeng, Henan
0
0
3
Bg30
山东崮山 Gushan, Shandong
0;
0;
3
Bg32
江苏南京 Nanjing, Jiangsu
0
0
3
Bg36
河北邯郸 Handan, Hebei
0;
0;
3
Bg37
北京 Beijing
3
3
3
Bg38
北京 Beijing
3
0
3
Bg45
山东淄博 Zibo, Shandong
0
0
3
Bg56
河北徐水 Xushui, Hebei
1
4
3
Bg57
河北邢台 Xingtai, Hebei
0
3
3
Bg64
河北定州 Dingzhou, Hebei
0
0
3
Bg65
河南荥阳 Xingyang, Henan
0
0;
3
Bg66
山西榆次 Yuci, Shanxi
0
0;
3
E03
北京 Beijing
0
0;
3
E09
北京 Beijing
0;
0
3
E11
—
3
0;
3
E16
北京 Beijing
0
0
3
E18
贵州 Guizhou
0;
3
3
E20
—
0
0
3
E21
—
0;
0
3
E22
云南 Yunnan
0;
0
3
E23
北京 Beijing
0
0
3
表1 采用苗期活体鉴定比较汶农14与Ulka/8*Cc ( Pm2)对白粉菌菌株的反应型 Table 1 Comparison of reaction patterns to Blumeria graminis f. sp. tritici isolates between Wennong 14 and Ulka/8*Cc ( Pm2) using in vivo seedling test
表2 采用离体叶段鉴定比较汶农14与Ulka/8*Cc ( Pm2)、Tabasco ( Pm46)和中作9504 (感病对照)对白粉菌菌株的反应型 Table 2 Comparison of reaction patterns to Blumeria graminis f. sp. tritici isolates between Wennong 14 and control genotypes Ulka/8*Cc ( Pm2), Tabasco ( Pm46), and Zhongzuo 9504 (susceptible) using detached leaf-segment test
菌株 Isolate
来源 Source
汶农14 Wennong 14
Ulka/8*Cc ( Pm2)
Tabasco ( Pm46)
中作9504 Zhongzuo 9504
Bg44-4
山东沾化 Zhanhua, Shandong
3
0
3
4
Bg44-5
山东沾化 Zhanhua, Shandong
3
4
3
4
Bg44-6
山东沾化 Zhanhua, Shandong
3
3
3
4
Bg57-5
河北邢台 Xingtai, Hebei
0
0
0
4
Bg68-3
北京 Beijing
0
0
0
4
Bg69-2
河北磁县 Cixian, Hebei
0
0
0
4
Bg69-3
河北磁县 Cixian, Hebei
0
0
0
4
Bg71-2
河北沙河 Shahe, Hebei
0
0
0
4
Bg77-2
河南西华 Xihua, Henan
1
3
1
4
Bg72
河北石家庄 Shijiazhuang, Hebei
0
0
0
4
Bg73-3
河北元氏 Yuanshi, Hebei
0
0
0
4
Bg74-2
河北涿州 Zhuozhou, Hebei
0
0
0
4
Bg75-3
河南浚县 Xunxian, Henan
0
0
0
4
Bg76-3
河南兰考 Lankao, Henan
0
0
0
4
Bg78-2
河南新乡 Xinxiang, Henan
0
1
0
4
Bg78-3
河南新乡 Xinxiang, Henan
0
0
0
4
Bg79-1
山东济宁 Jining, Shandong
3
4
3
4
Bg79-2
山东济宁 Jining, Shandong
3
0
0
4
Bg79-3
山东济宁 Jining, Shandong
3
0
0
4
Bg80-3
山东莒县 Juxian, Shandong
0
0
1
4
Bg81-3
山东平邑 Pingyi, Shandong
0
0
0
4
Bg83-2
山东文登 Wendeng, Shandong
0
3
3
4
Bg84-3
山东郓城 Yuncheng, Shandong
0
3
0
4
Bg85-2
山东招远 Zhaoyuan, Shandong
0
0
0
4
Bg86-1
江苏扬州 Yangzhou, Jiangsu
0
0
0
4
Bg86-2
江苏扬州 Yangzhou, Jiangsu
0
0
2
4
表2 采用离体叶段鉴定比较汶农14与Ulka/8*Cc ( Pm2)、Tabasco ( Pm46)和中作9504 (感病对照)对白粉菌菌株的反应型 Table 2 Comparison of reaction patterns to Blumeria graminis f. sp. tritici isolates between Wennong 14 and control genotypes Ulka/8*Cc ( Pm2), Tabasco ( Pm46), and Zhongzuo 9504 (susceptible) using detached leaf-segment test
表3 汶农14、邯4564、F2和F2:3代家系对白粉菌E09菌株的抗性遗传分析 Table 3 Inheritance analysis using Wennong 14, Han 4564, F2, and F2:3 lines for reactions to Blumeria graminis f. sp. tritici isolate E09
表3 汶农14、邯4564、F2和F2:3代家系对白粉菌E09菌株的抗性遗传分析 Table 3 Inheritance analysis using Wennong 14, Han 4564, F2, and F2:3 lines for reactions to Blumeria graminis f. sp. tritici isolate E09
表4 Table 4 表4(Table 4)
表4 分子标记在汶农14×邯4564 F2群体分离情况及其与 PmW14的遗传距离 Table 4 Segregation ratio of molecular markers linked to powdery resistance gene PmW14 in Wennong 14 × Han 4564 F2 population
标记 Marker
带型 Banding pattern
χ2
P值 P-value
与 PmW14的遗传距离 Genetic distance from PmW14(cM)
A
H
B
Xcfd8
73
117
69
2.5367 (1:2:1)
0.2813
7.5
Xcfd81
68
127
64
0.2201 (1:2:1)
0.8958
1.8
SCAR203
197
62
0.1557 (3:1)
0.6931
7.7
各标记均检测259个单株。A: 带型与汶农14相同; B: 带型与邯4564相同; H: 杂合带型。χ20.05, 1 = 3.84; χ20.05, 2 = 5.99。 A total of 259 individuals were tested on each locus. A: banding pattern same as Wennong 14; B: banding pattern same as Han 4564; H: heterozygous banding pattern. χ20.05, 1 = 3.84; χ20.05, 2 = 5.99.
表4 分子标记在汶农14×邯4564 F2群体分离情况及其与 PmW14的遗传距离 Table 4 Segregation ratio of molecular markers linked to powdery resistance gene PmW14 in Wennong 14 × Han 4564 F2 population
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