QTL Mapping for TuMV Resistance in Chinese Cabbage [Brassica campestris L. ssp. pekinensis (Lour. ) O lssom]

ACTA HORTICULTURAE SINICA ›› 2009, Vol. 36 ›› Issue (5): 731-736.

• 研究简报 • Previous Articles Next Articles

QTL Mapping for TuMV Resistance in Chinese Cabbage [Brassica campestris L. ssp. pekinensis (Lour. ) O lssom]

ZHANG Xiao-wei^1,2,YUAN Yu-xiang^2,3,WANG Xiao-wu³,SUN Ri-fei³,WU Jian³, XIE Cong-hua^1*,JIANG Wu-sheng²,and YAO Qiu-ju²

(¹College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China; ²Institute of Horticulture,Henan Academ y of Agricultural Sciences, Zhengzhou 450002, China; ³Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China )

Received:2008-10-25 Revised:2009-04-24 Online:2009-05-25 Published:2009-05-25
Contact: XIE Cong-hua1

Abstract

Abstract: One hundred and eighty-three doubled hap loid (DH) lines derived from the cross of two Chinese cabbage [Brassica campestris L. ssp. pekinensis (Lour. ) Olssom ] DH lines, Y177212 (TuMV-susceptible) and Y195293 ( TuMV-resistant) , were used to map quantitative trait loci (QTL) related to TuMV resistance. TuMV resistance was evaluated for young seedlings by inoculating true leaves with TuMV-C₄ strain.Based on the reported genetic map with 287 loci, 3 QTLs were detected for TuMV resistance, localizing on linkage group s R03, R04 and R06, respectively. The most significant of the identified QTL locates on R04,named Tu-2, exp laining 21.9% of the phenotyp ic variance. The other two QTL s mapped on R03 and R06, explaining 10.5% and 14.5% of the phenotyp ic variance, respectively. The three QTL s together exp lained
40.0% of the TuMV resistance variance.

Key words: Chinese cabbage, Turnip mosaic virus (TuMV), QTL mapp ing, DH population

CLC Number:

S 634.1

ZHANG Xiao-wei;YUAN Yu-xiang;WANG Xiao-wu;SUN Ri-fei;WU Jian;XIE Cong-hua;JIANG Wu-sheng;and YAO Qiu-ju. QTL Mapping for TuMV Resistance in Chinese Cabbage [Brassica campestris L. ssp. pekinensis (Lour. ) O lssom][J]. ACTA HORTICULTURAE SINICA, 2009, 36(5): 731-736.

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QTL Mapping for TuMV Resistance in Chinese Cabbage [Brassica campestris L. ssp. pekinensis (Lour. ) O lssom]

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