scholarly journals Application of Association Mapping to Understanding the Genetic Diversity of Plant Germplasm Resources

2008 ◽  
Vol 2008 ◽  
pp. 1-18 ◽  
Author(s):  
Ibrokhim Y. Abdurakhmonov ◽  
Abdusattor Abdukarimov

Compared to the conventional linkage mapping, linkage disequilibrium (LD)-mapping, using the nonrandom associations of loci in haplotypes, is a powerful high-resolution mapping tool for complex quantitative traits. The recent advances in the development of unbiased association mapping approaches for plant population with their successful applications in dissecting a number of simple to complex traits in many crop species demonstrate a flourish of the approach as a “powerful gene tagging” tool for crops in the plant genomics era of 21st century. The goal of this review is to provide nonexpert readers of crop breeding community with (1) the basic concept, merits, and simple description of existing methodologies for an association mapping with the recent improvements for plant populations, and (2) the details of some of pioneer and recent studies on association mapping in various crop species to demonstrate the feasibility, success, problems, and future perspectives of the efforts in plants. This should be helpful for interested readers of international plant research community as a guideline for the basic understanding, choosing the appropriate methods, and its application.

Author(s):  
Khezir Hayat ◽  
Adem Bardak ◽  
Mehboob-ur-Rahman ◽  
Hafiz Muhammad Imran ◽  
Furqan Ahmad ◽  
...  

Improved fiber yield is considered a constant goal of upland cotton (Gossypium hirsutum) breeding worldwide, but the understanding of the genetic basis controlling yield-related traits remains limited. Dissecting the genetic architecture of complex traits is an ongoing challenge for geneticists. Two complementary approaches for genetic mapping, linkage mapping and association mapping have led to successful dissection of complex traits in many crop species. Both of these methods detect quantitative trait loci (QTL) by identifying marker–trait associations, and the only fundamental difference between them is that between mapping populations, which directly determine mapping resolution and power. Nowadays, the availability of genomic tools and resources is leading to a new revolution of plant breeding, as they facilitate the study of the genotype and its relationship with the phenotype, in particular for complex traits. Next Generation Sequencing (NGS) technologies are allowing the mass sequencing of genomes and transcriptomes, which is producing a vast array of genomic information with the development of high-throughput genotyping, phenotyping will be a major challenge for genetic mapping studies. We believe that high-quality phenotyping and appropriate experimental design coupled with new statistical models will accelerate progress in dissecting the genetic architecture of complex traits.


Genetics ◽  
2013 ◽  
Vol 195 (3) ◽  
pp. 1141-1155 ◽  
Author(s):  
Francisco A. Cubillos ◽  
Leopold Parts ◽  
Francisco Salinas ◽  
Anders Bergström ◽  
Eugenio Scovacricchi ◽  
...  

2014 ◽  
Vol 69 ◽  
pp. 163-178 ◽  
Author(s):  
Sean P. Bemis ◽  
Steven Micklethwaite ◽  
Darren Turner ◽  
Mike R. James ◽  
Sinan Akciz ◽  
...  

2018 ◽  
Author(s):  
Paul M. Schenk ◽  
◽  
Britney E. Schmidt ◽  
Hanna G. Sizemore ◽  
Carle M. Pieters ◽  
...  

2019 ◽  
Vol 5 (7) ◽  
pp. 351-353 ◽  
Author(s):  
Kathryn Lauren Hong ◽  
Damien Redfearn ◽  
Sanoj Chacko ◽  
Jason Baley ◽  
Adrian Baranchuk ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document