Combination of multipoint maximum likelihood (MML) and regression mapping algorithms to construct a high-density genetic linkage map for loblolly pine (Pinus taeda L.)

2013 ◽  
Vol 9 (6) ◽  
pp. 1529-1535 ◽  
Author(s):  
Pedro J. Martínez-García ◽  
Kristian A. Stevens ◽  
Jill L. Wegrzyn ◽  
John Liechty ◽  
Marc Crepeau ◽  
...  
Keyword(s):  
Maximum Likelihood ◽  
Linkage Map ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
High Density ◽  
Mapping Algorithms ◽  
Regression Mapping ◽  
Pinus Taeda L

Construction of a high‐density genetic linkage map and identification of QTLs for main agronomic traits of tetraploid hybrid crested wheatgrass

2020 ◽  
Vol 66 (3) ◽  
pp. 161-173 ◽  
Author(s):  
Xiaoxia Yu ◽  
Yanhong Ma ◽  
Zhiyan Jiang ◽  
Yue Shi ◽  
Dongsheng Yang ◽  
...  
Keyword(s):  
Linkage Map ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Agronomic Traits ◽  
High Density ◽  
Crested Wheatgrass ◽  
Tetraploid Hybrid

scholarly journals A high-density SNP-based genetic map and several economic traits-related loci in Pelteobagrus vachelli

BMC Genomics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Guosong Zhang ◽  
Jie Li ◽  
Jiajia Zhang ◽  
Xia Liang ◽  
Tao Wang ◽  
...  
Keyword(s):  
Sex Determination ◽  
Linkage Map ◽  
Candidate Genes ◽  
Genetic Map ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
High Density ◽  
Hypoxia Tolerance ◽  
Genome Wide ◽  
Pelteobagrus Vachelli

Abstract Background A high-density genetic linkage map is essential for QTL fine mapping, comparative genome analysis, identification of candidate genes and marker-assisted selection in aquaculture species. Pelteobagrus vachelli is a very popular commercial species in Asia. However, some specific characters hindered achievement of the traditional selective breeding based on phenotypes, such as lack of large-scale genomic resource and short of markers tightly associated with growth, sex determination and hypoxia tolerance related traits. Results By making use of 5059 ddRAD markers in P. vachelli, a high-resolution genetic linkage map was successfully constructed. The map’ length was 4047.01 cM by using an interval of 0.11 cm, which is an average marker standard. Comparative genome mapping revealed that a high proportion (83.2%) of markers with a one-to-one correspondence were observed between P. vachelli and P. fulvidraco. Based on the genetic map, 8 significant genome-wide QTLs for 4 weight, 1 body proportion, 2 sex determination, and 1 hypoxia tolerance related traits were detected on 4 LGs. Some SNPs from these significant genome-wide QTLs were observably associated with these phenotypic traits in other individuals by Kompetitive Allele Specific PCR. In addition, two candidate genes for weight, Sipa1 and HSD11B2, were differentially expressed between fast-, medium- and slow-growing P. vachelli. Sema7a, associated with hypoxia tolerance, was induced after hypoxia exposure and reoxygenation. Conclusions We mapped a set of suggestive and significant QTLs as well as candidate genes for 12 growth, 1 sex determination and 1 hypoxia tolerance related traits based on a high-density genetic linkage map by making use of SNP markers for P. fulvidraco. Our results have offered a valuable method about the much more efficient production of all-male, fast growth and hypoxia tolerance P. vachelli for the aquaculture industry.

scholarly journals Construction of a high-density genetic linkage map and QTL analysis for hazelnut breeding

2018 ◽  
pp. 25-30
Author(s):  
D. Torello Marinoni ◽  
N. Valentini ◽  
E. Portis ◽  
A. Acquadro ◽  
C. Beltramo ◽  
...  
Keyword(s):  
Linkage Map ◽  
Qtl Analysis ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
High Density

Construction of a high-density linkage map and QTL analysis for pistil abortion in apricot (Prunus armeniaca L.)

2019 ◽  
Vol 99 (5) ◽  
pp. 599-610
Author(s):  
Junhuan Zhang ◽  
Haoyuan Sun ◽  
Li Yang ◽  
Fengchao Jiang ◽  
Meiling Zhang ◽  
...  
Keyword(s):  
Linkage Map ◽  
Genetic Map ◽  
Qtl Analysis ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Prunus Armeniaca ◽  
High Density ◽  
Pistil Abortion ◽  
Genomic Study ◽  
Prunus Armeniaca L

A high-density genetic map of apricot (Prunus armeniaca L.) was constructed using an F1 population constructed by crossing two main Chinese cultivars ‘Chuanzhihong’ and ‘Luotuohuang’, coupled with a recently developed reduced representation library (RRL) sequencing. The average sequencing depth was 38.97 in ‘Chuanzhihong’ (female parent), 33.05 in ‘Luotuohuang’ (male parent), and 8.91 in each progeny. Based on the sequencing data, 12 451 polymorphic markers were developed and used in the construction of the genetic linkage map. The final map of apricot comprised eight linkage groups, including 1991 markers, and covered 886.25 cM of the total map length. The average distance between adjacent markers was narrowed to 0.46 cM. Gaps larger than 5 cM only accounted for <0.33%. To our knowledge, this map is the densest genetic linkage map that is currently available for apricot research. It is a valuable linkage map for quantitative trait loci (QTLs) identification of important agronomic traits. Moreover, the high marker density and well-ordered markers that this linkage map provides will be useful for molecular breeding of apricot as well. In this study, we applied this map in the QTL analysis of an important agronomic trait, pistil abortion. Several QTLs were detected and mapped respectively to the middle regions of LG5 (51.005∼59.4 cM) and LG6 (72.884∼76.562 cM), with nine SLAF markers closely linked to pistil abortion. The high-density genetic map and QTLs detected in this study will facilitate marker-assisted breeding and apricot genomic study.

Comparison of a high-density genetic linkage map to genome features in the model grass Brachypodium distachyon

2011 ◽  
Vol 123 (3) ◽  
pp. 455-464 ◽  
Author(s):  
Naxin Huo ◽  
David F. Garvin ◽  
Frank M. You ◽  
Stephanie McMahon ◽  
Ming-Cheng Luo ◽  
...  
Keyword(s):  
Linkage Map ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Brachypodium Distachyon ◽  
High Density ◽  
Genome Features ◽  
Model Grass

SNP Discovery by GBS in Olive and the Construction of a High-Density Genetic Linkage Map

2016 ◽  
Vol 54 (3) ◽  
pp. 313-325 ◽  
Author(s):  
Ahmet İpek ◽  
Kübra Yılmaz ◽  
Pelin Sıkıcı ◽  
Nesrin Aktepe Tangu ◽  
Ayşe Tülin Öz ◽  
...  
Keyword(s):  
Linkage Map ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
High Density ◽  
Snp Discovery
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