Mapping and Analysis of QTL Related to Leaf Color in Chinese Cabbage( Brassica rapa L. ssp. pekinensis)

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (1): 99-104.

Mapping and Analysis of QTL Related to Leaf Color in Chinese Cabbage( Brassica rapa L. ssp. pekinensis)

XU Dong-hui^1,2;SUN Ri-fei¹;ZHANG Yan-guo¹;YUAN Yu-xiang^1,2,3;KANG Jun-gen⁴;WU Jian¹;ZHANG Hui^1,2;SONG Xiao-fei⁵;LI Xiao-nan^1,2;SONG Yi-mo⁶;WANG Xiao-wu^1*

( ¹ Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; ² The Graduate School ofChinese Academy of Agricultural Sciences, Beijing 100081, China; ³ Institute of Biotechnology, Henan Academy of AgriculturalSciences, Zhengzhou 450002, China; ⁴ Institute of Vegetables, Shanxi Academ y of Agricultural Sciences, Taiyuan 030031, China;⁵College of Horticulture, Hebei AgriculturalUniversity, Baoding, Hebei 071001, China; 6College of L ife sciences, CapitalN orm alUniversity, Beijing 100037, China )

Received:1900-01-01 Revised:1900-01-01 Online:2007-02-25 Published:2007-02-25

Abstract

Abstract: A Chinese cabbage (Brassica rapa L. ssp. pekinensis) double-hap loid (DH) population with a
reported AFLP genetic map was emp loyed to map quantitative trait loci (QTL ) related to leaf color by using
MAPQTL 410 package. Tristimulus colorimeter, leafy p igment determination and ocularmeasurementwere used
to measure the traits related to leaf color. A total of 18 QTL were detected on 7 linkage group s, 9, 8 and 1 QTL
were detected by 3 methods, respectively. These QTL individually exp lained 5.5% to 15.6% of the phenotyp ic
variation, and there were unequal gene effects on the traits related to leaf color. These mapped QTL could be
used to develop a marker assisted selection program for leaf color in Brassica rapa vegetable varieties

Key words: Chinese cabbage, Leaf color, QTL, Linkage group

XU Dong-hui;SUN Ri-fei;ZHANG Yan-guo;YUAN Yu-xiang;;KANG Jun-gen;WU Jian;ZHANG Hui;SONG Xiao-fei;LI Xiao-nan;SONG Yi-mo;WANG Xiao-wu. Mapping and Analysis of QTL Related to Leaf Color in Chinese Cabbage( Brassica rapa L. ssp. pekinensis)[J]. ACTA HORTICULTURAE SINICA, 2007, 34(1): 99-104.

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Mapping and Analysis of QTL Related to Leaf Color in Chinese Cabbage( Brassica rapa L. ssp. pekinensis)

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