[Analysis of major QTL for Fusarium head blight resistance on the short arm of chromosome 3B in wheat].
Three recombinant inbred populations, Ning894037/Alondra, Wangshuibai/Alondra and Sumai3/Alondra, were analyzed for QTLs associated with Fusarium head blight resistance by interval mapping and composite interval mapping in this study. The result showed that the major QTLs were detected on the short arm of chromosome 3B of all three resistant parents using the data of FHB resistance evaluated in greenhouse or field. They were located in the interval of 5.0 cM between BARC133 and Xgwm493 in Ning894037, 11.5 cM between BARC147 and Xgwm493 in Wangshuibai, and 13.0 cM between Xgwm533a and Xgwm493 in Sumai3, explaining 42.8%, 15.1% and 10.6% of the phenotypic variance for Type II resistance (spread within the spike), respectively. Some of the SSR markers linking to the major QTLs tightly can be used directly in marker-assisted breeding to improve FHB resistance in wheat.
Zhou
Miao-Ping
MP
Institute of Agrobiological Genetics and Physiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
Ren
Li-Juan
LJ
Zhang
Xu
X
Scholten
Olga E
OE
Shen
Xiao-Rong
XR
Bai
Gui-Hua
GH
Ma
Hong-Xiang
HX
Lu
Wei-Zhong
WZ
D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000235:genetics*; D018744:DNA, Plant / Q000235:genetics; D005670:Fusarium / Q000254:growth & development*; D007113:Immunity, Innate / Q000235:genetics; D018895:Microsatellite Repeats; D021141:Nucleic Acid Amplification Techniques; D010935:Plant Diseases / Q000235:genetics* / Q000382:microbiology; D040641:Quantitative Trait Loci; D014908:Triticum / Q000235:genetics* / Q000382:microbiology
D018744:DNA, Plant