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Journal of Tea Science ›› 2016, Vol. 36 ›› Issue (4): 432-439.doi: 10.13305/j.cnki.jts.2016.04.012

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QTL Analysis for Anthracnose Resistance in Tea Plant (Camellia sinensis)

XU Liyi1,2, TAN Liqiang1,2, WANG Liyuan2, QI Guinian1,*, CHENG Hao2, WEI Kang2   

  1. 1. College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China;
    2. National Center for Tea Improvement, Tea Research Institute of the Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou 310008, China
  • Received:2016-01-19 Published:2019-08-26

Abstract: In order to provide a basis for breeding tea plants with anthracnose resistance, 170 F1 plants, derived from LJ43♀×BHZ♂, were used to constructed a linkage map by SSR markers. Field observation and indoor test were carried out in 2014. The data of phenotypic characters were used for QTL mapping and analysis by the method of MQM mapping. A pathogen was isolated from a diseased leaf of the F1 plants, and its gene sequence of ITS had 99% similarity with Colletotrichum sp. based on NCBI BLAST. The plants grown in open field were more easy to be infected by the pathogen than those grown in rooms. Eight QTLs were detected in six different linkage groups by QTL analysis. The LOD and PVE of individual QTLs ranged from 2.53 to 6.80 and 5.6% to 13.8%, respectively. A main QTL with LOD 6.80 and PVE 13.8% was detected in LG10.

Key words: anthracnose resistance, QTL mapping, tea plant, SSR linkage map

CLC Number: