A new approach for mapping quantitative trait loci using complete genetic marker linkage maps

1994 ◽  
Vol 89 (5) ◽  
pp. 535-539 ◽  
Author(s):  
W. R. Wu ◽  
W. M. Li
Keyword(s):  
Quantitative Trait Loci ◽  
Genetic Marker ◽  
Quantitative Trait ◽  
Linkage Maps ◽  
New Approach ◽  
Trait Loci

scholarly journals Mapping Freeze Tolerance Quantitative Trait Loci in a Citrus grandis × Poncirus trifoliata F1 Pseudo-testcross Using Molecular Markers

2003 ◽  
Vol 128 (4) ◽  
pp. 508-514 ◽  
Author(s):  
Courtney A. Weber ◽  
Gloria A. Moore ◽  
Zhanao Deng ◽  
Fred G. Gmitter
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Bulked Segregant Analysis ◽  
Random Amplified Polymorphic Dna ◽  
Freeze Tolerance ◽  
Interval Mapping ◽  
Poncirus Trifoliata ◽  
Linkage Maps ◽  
Sequence Characterized Amplified Region ◽  
Trait Loci

Mapping quantitative trait loci (QTL) associated with freeze tolerance was accomplished using a Citrus grandis (L.) Osb. × Poncirus trifoliata (L.) Raf. F1 pseudo-testcross population. A progeny population of 442 plants was acclimated and exposed to temperatures of -9 °C and -15 °C in two separate freeze tests. A subpopulation of 99 progeny was genotyped for random amplified polymorphic DNA (RAPD), cleaved amplified polymorphic sequence (CAPS), sequence characterized amplified region (SCAR), and sequence tagged site (STS) markers to produce a linkage map for each parent. Potential QTL were identified by interval mapping, and their validity was corroborated with results from means comparison (t test), one-way analysis of variance (F test), and bulked segregant analysis (BSA). Multiple analytical methods provided evidence supporting putative QTL and decreased the probability of missing significant QTL associated with freeze tolerance. QTL with a large effect on freeze tolerance were located on both the Citrus and Poncirus linkage maps. In addition, clusters of markers with significantly different means between marker present and absent classes indicating minor QTL that contribute smaller effects on the level of tolerance were found on the linkage maps of both species.

scholarly journals Construction of High-Density Linkage Maps and Identification of Quantitative Trait Loci Associated with Verticillium Wilt Resistance in Autotetraploid Alfalfa (Medicago sativa L.)

Plant Disease ◽  
2020 ◽  
Vol 104 (5) ◽  
pp. 1439-1444
Author(s):  
Long-Xi Yu ◽  
Fan Zhang ◽  
Cesar Medina Culma ◽  
Sen Lin ◽  
Yi Niu ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Verticillium Wilt ◽  
Quantitative Trait ◽  
Quantitative Resistance ◽  
Genotyping By Sequencing ◽  
High Density ◽  
Forage Yield ◽  
Linkage Maps ◽  
Trait Loci ◽  
Northern United States

Verticillium wilt (VW) of alfalfa is a devastating disease that causes forage yield reductions of up to 50% in the northern United States and Canada. The most effective method for controlling the disease is through the development and use of resistant varieties. To identify quantitative trait loci (QTL) for VW resistance in alfalfa, we used a full-sib population segregating for VW resistance. High-density linkage maps for both resistant and susceptible parents were constructed using single-dose alleles of single-nucleotide polymorphism markers generated by genotyping-by-sequencing. Five QTL associated with VW resistance were identified and they were in four linkage groups (4D, 6B, 6D, and 8C). Of those, three QTL (qVW-6D-1, qVW-6D-2, and qVW-8C) had higher logarithm of odds. Two putative candidates of nucleotide-binding site leucine-rich repeat disease resistance genes were identified in the QTL intervals of qVW-6D-2 and qVW-8C, respectively. The result agreed with our previous studies, in which similar resistance loci were identified in an association panel using genome-wide association. The results provide insight into the quantitative resistance to VW in alfalfa. The resistance loci and closely linked markers identified in the present study can be used in developing new alfalfa varieties with enhanced resistance to VW.

scholarly journals Genetic linkage maps of two interspecific grape crosses (Vitis spp.) used to localize quantitative trait loci for downy mildew resistance

2010 ◽  
Vol 7 (1) ◽  
pp. 153-167 ◽  
Author(s):  
Flavia M. Moreira ◽  
Alberto Madini ◽  
Rosanna Marino ◽  
Luca Zulini ◽  
Marco Stefanini ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Downy Mildew ◽  
Quantitative Trait ◽  
Genetic Linkage ◽  
Downy Mildew Resistance ◽  
Linkage Maps ◽  
Mildew Resistance ◽  
Genetic Linkage Maps ◽  
Trait Loci ◽  
Vitis Spp

scholarly journals Construction of high-density linkage maps for mapping quantitative trait loci for multiple traits in field pea (Pisum sativum L.)

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Krishna K. Gali ◽  
Yong Liu ◽  
Anoop Sindhu ◽  
Marwan Diapari ◽  
Arun S. K. Shunmugam ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Pisum Sativum ◽  
Quantitative Trait ◽  
High Density ◽  
Field Pea ◽  
Linkage Maps ◽  
Multiple Traits ◽  
Pisum Sativum L ◽  
Trait Loci

Mapping quantitative trait loci using molecular marker linkage maps

1990 ◽  
Vol 79 (5) ◽  
pp. 583-592 ◽  
Author(s):  
S. J. Knapp ◽  
W. C. Bridges ◽  
D. Birkes
Keyword(s):  
Quantitative Trait Loci ◽  
Molecular Marker ◽  
Quantitative Trait ◽  
Linkage Maps ◽  
Trait Loci

Identification of cis-regulated genes in quantitative trait loci driving liver fibrosis

2012 ◽  
Vol 50 (08) ◽  
Author(s):  
R Hall ◽  
R Müllenbach ◽  
S Huss ◽  
R Alberts ◽  
K Schughart ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Liver Fibrosis ◽  
Quantitative Trait ◽  
Trait Loci
Sign in / Sign up

Export Citation Format

Share Document