onstruction of AFLP Genetic Linkage Map and Analysis of QTLs Related to Fruit Traits in Pear

ACTA HORTICULTURAE SINICA ›› 2011, Vol. 38 ›› Issue (10): 1991-1998.

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onstruction of AFLP Genetic Linkage Map and Analysis of QTLs Related to Fruit Traits in Pear

ZHANG Rui-ping1，WU Jun1， LI Xiu-gen2,*，YANG Jian2，WANG Long2，WANG Su-ke2，and ZHANG Shao-ling1,*

（1Center of Engineering and Technology Research，Nanjing Agricultural University，Nanjing 210095，China；2Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences，Zhengzhou 450009，China）

Received:2011-05-30 Revised:2011-10-09 Online:2011-10-25 Published:2011-10-25
Contact: LI Xiu-gen2,*，ZHANG Shao-ling1,*

Abstract

Abstract: A genetic linkage map of Pyrus（2n = 34）was constructed by 209 AFLP markers which were distributed on 17 linkage groups and spanned 1 506.3 cM in genome with an average distance of 7.21 cM between markers. The map was based on a population（n = 97）derived from a cross of ‘Bayuehong’×‘Dangshansuli’. By using interval mapping method，the QTLs for five fruit traits of pear were detected，including 1 QTL for soluble solids content on LG1，3 QTLs for fruit weight on LG6，LG7 and LG11，1 QTL for aspect ratio on LG7，2 QTLs for fruit weight on LG6 and LG7，and 2 QTLs for fruit stalk length on LG1 and LG8. The phenotypic variations explained by each QTL ranged from 11.4% to 36.4%，and their LOD values varied from 2.50 to 4.14.

Key words: Pyrus, AFLP, linkage map, QTL, fruit traits

CLC Number:

S 661.2

ZHANG Rui-ping;WU Jun;LI Xiu-gen;YANG Jian;WANG Long;WANG Su-ke;and ZHANG Shao-ling;. onstruction of AFLP Genetic Linkage Map and Analysis of QTLs Related to Fruit Traits in Pear [J]. ACTA HORTICULTURAE SINICA, 2011, 38(10): 1991-1998.

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onstruction of AFLP Genetic Linkage Map and Analysis of QTLs Related to Fruit Traits in Pear

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