QTL mapping of citrus freeze tolerance

Publication Overview
TitleQTL mapping of citrus freeze tolerance
AuthorsHong Q, Ma X, Gong G, Peng Z, He Y
TypeJournal Article
Journal NameActa horticulturae
Issue1065
Year2015
Page(s)467-474
CitationHong Q, Ma X, Gong G, Peng Z, He Y. QTL mapping of citrus freeze tolerance. Acta horticulturae. 2015; (1065)467-474.

Abstract

Freeze limits the cultivated area of citrus. Periodical freeze events in some producing areas caused severe damages and low temperature during extreme climate change often affected the citrus global production in recent years. To develop and cultivate freeze tolerant cultivars is the most effective way to avoid damages caused by freeze. Cold tolerance is considered a quantitative trait in plants. In this research, QTL mapping was used to find loci and molecular markers putatively related with freeze tolerance in citrus. A new linkage map was established by combining the segregating data of markers in a published map and SSR markers newly developed from citrus EST and Clementine BAC-end sequences. New map integrated 452 SSR markers with 9 linkage groups and covered 936.1 cM of citrus genome with an average genetic distance at 2.07 cM between adjacent markers. Freeze tolerance of the mapping population of parents and 68 progenies was tested by the method of electrolyte leakage in the end of December after more than two weeks of low temperature hardening and Semi-lethal low temperature (LT50) was estimated with logistic equation. The distribution of LT50 in the mapping population was not deviated from a normal distribution. Four QTLs were indentified at LOD≥3.0, which could explain 29.3, 23.1, 44.7 and 21.0% of the phenotypic variation. These QTLs were mapped on the linkage group 2, 4, 3 and 1, respectively. The identified QTL areas and nearby markers should be useful for citrus freeze tolerance research and breeding in the future.
Featuremaps
This publication contains information about 1 maps:
Map Name
Citrus-Li2/Wan2-F1-2015
Stocks
This publication contains information about 3 stocks:
Stock NameUniquenameType
Li 2Li 2cultivar
Wan 2Wan 2cultivar
Citrus-Li2_x_Wan2-F1Citrus-Li2_x_Wan2-F1population
Features
This publication contains information about 453 features:
Feature NameUniquenameType
AC01AC01genetic_marker
AG14AG14genetic_marker
ATC9ATC9genetic_marker
CAC19CAC19genetic_marker
CAC23CAC23genetic_marker
CAC33CAC33genetic_marker
CAC39CAC39genetic_marker
CAG01CAG01genetic_marker
CAT1CAT1genetic_marker
cBDM10E1cBDM10E1genetic_marker
cBDM10E2cBDM10E2genetic_marker
cBDM11E2cBDM11E2genetic_marker
cBDM12E2cBDM12E2genetic_marker
cBDM13E1cBDM13E1genetic_marker
cBDM13E2cBDM13E2genetic_marker
cBDM14E2cBDM14E2genetic_marker
cBDM15E1cBDM15E1genetic_marker
cBDM15E2cBDM15E2genetic_marker
cBDM17E2cBDM17E2genetic_marker
cBDM18E1cBDM18E1genetic_marker
cBDM18E2cBDM18E2genetic_marker
cBDM19E2cBDM19E2genetic_marker
cBDM20E1cBDM20E1genetic_marker
cBDM20E2cBDM20E2genetic_marker
cBDM21E1cBDM21E1genetic_marker

Pages

Projects
This publication contains information about 1 projects:
Project NameDescription
Citrus-Freeze_Tolerance-Hong-2015
Properties
Additional details for this publication include:
Property NameValue
Publication Model[electronic resource].
Language Abbreng
Notesp. 467-474.
URLhttp://www.actahort.org/books/1065/1065_57.htm
Publication TypeJournal Article
Publication Date2015
Published Location|||
KeywordsCitrus, breeding, chromosome mapping, clementines, climate change, cold tolerance, cultivars, electrolytes, equations, expressed sequence tags, genetic distance, genetic markers, genome, linkage groups, loci, microsatellite repeats, normal distribution, parents, phenotypic variation, quantitative trait loci, temperature
Cross References
This publication is also available in the following databases:
DatabaseAccession
AGL: USDA National Agricultural LibraryAGL:5112878