Genetic Markers, Trait Mapping and Marker-Assisted Selection in Plant Breeding

2015 ◽  
pp. 65-88 ◽  
Author(s):  
P. Kadirvel ◽  
S. Senthilvel ◽  
S. Geethanjali ◽  
M. Sujatha ◽  
K. S. Varaprasad
Keyword(s):  
Plant Breeding ◽  
Genetic Markers ◽  
Marker Assisted Selection ◽  
Trait Mapping

Marker assisted selection in livestock

1996 ◽  
Vol 1996 ◽  
pp. 52-52
Author(s):  
P.M. Visscher ◽  
S. Van der Beek ◽  
C.S. Haley
Keyword(s):  
Quantitative Trait Loci ◽  
Genetic Markers ◽  
Quantitative Trait ◽  
Marker Assisted Selection ◽  
Rapid Development ◽  
Carcass Quality ◽  
Direct Test ◽  
Genome Maps ◽  
Livestock Breeding ◽  
Breeding Programmes

With the rapid development of genome maps of livestock, many genetic markers are becoming available. These markers usually have no affect on animals in their own right, their value is that they allow the inheritance of sections of chromosome to be followed in suitable pedigrees. How then may genetic markers be used in livestock breeding? It is useful to distinguish the use of markers in selection programmes within breeds and crossbreeding programmes. Furthermore, for both types of breeding programmes there are different kinds of information that can be provided by markers. Genetic markers may be linked to major genes, or in some cases we may have a direct test for a mutation which causes a major difference in animal performance or phenotype. Alternatively, we may have markers which are linked to (unknown) quantitative trait loci (QTLs), i.e. loci which influence traits such as growth, milk yield, carcass quality and litter size.

Marker-assisted selection of candidate bulls for progeny testing programmes

1990 ◽  
Vol 51 (1) ◽  
pp. 63-74 ◽  
Author(s):  
Y. Kashi ◽  
E. Hallerman ◽  
M. Soller
Keyword(s):  
Theoretical Analysis ◽  
Genetic Markers ◽  
Milk Production ◽  
Marker Assisted Selection ◽  
Specific Marker ◽  
Progeny Testing ◽  
Genetic Progress ◽  
Potential Benefits ◽  
Marker Alleles ◽  
Selection Of

ABSTRACTA theoretical analysis of the potential benefits of marker-assisted selection (MAS) of candidate bulls prior to entry into a young sire progeny testing programme was carried out. It is assumed that quantitative trait loci (QTL) affecting milk production have been mapped with respect to known genetic markers, and MAS is based on evaluation of elite sires in order to identify marker alleles in coupling to favourable or unfavourable QTL alleles. Candidate bulls, descendants of the elite sire will then be selected, prior to conventional progeny testing, on the basis of the marker alleles derived from the elite-sire ancestor.The analysis considers recombination between marker and QTL, the difficulty of tracing specific marker alleles from sire to progeny, and the expectation that MAS, in practice, will be implemented in the grandsons, rather than in the sons of elite sires. It is shown that MAS of candidate bulls, based on the use of a single diallelic marker in linkage to a QTL will have only a negligible effect on the rate of genetic progress. Increases of 15 to 20% in the rate of genetic gain, however, can be obtained by the use of single polyallelic markers, and increases of 20 to 30% can be obtained by utilizing haplotypes of diallelic or polyallelic markers.

Development of sequence characterized DNA markers linked to a dominant verticillium wilt resistance gene in tomato

Genome ◽  
1998 ◽  
Vol 41 (1) ◽  
pp. 91-95 ◽  
Author(s):  
L M Kawchuk ◽  
J Hachey ◽  
D R Lynch
Keyword(s):  
Resistance Gene ◽  
Genetic Markers ◽  
Verticillium Wilt ◽  
Marker Assisted Selection ◽  
Genomic Region ◽  
Homologous Sequence ◽  
Nucleotide Substitutions ◽  
Wilt Resistance ◽  
Verticillium Wilt Resistance ◽  
Allele Specific

Sequences were determined for codominant RAPD markers closely linked to the Ve locus, a dominant verticillium wilt resistance gene in tomato. Analysis of the sequences linked to Ve and ve revealed a perfectly homologous sequence with a central polymorphic region comprising 79 nucleotide substitutions, insertions, and deletions. Codominant and allele-specific SCARs were developed using conserved and polymorphic sequences linked to the Ve locus. High resolution linkage analysis using F2 progeny segregating for resistance and marker-assisted selection indicated that linkage between the genetic markers and the Ve locus is less than 0.67 ± 0.49 cM. Sequences were useful in determining the molecular structure of a polymorphic genomic region closely linked to the Ve locus and in developing genetic markers that facilitated marker-assisted selection of the resistant, susceptible, heterozygous, and homozygous genotypes.

scholarly journals Insights into Marker Assisted Selection and Its Applications in Plant Breeding

2020 ◽  
Author(s):  
Gayatri Kumawat ◽  
Chander Kanta Kumawat ◽  
Kailash Chandra ◽  
Saurabh Pandey ◽  
Subhash Chand ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Plant Breeding ◽  
Short Duration ◽  
Marker Assisted Selection ◽  
Production Systems ◽  
Crop Improvement ◽  
Gene Pyramiding ◽  
Genetic Purity ◽  
Crop Species ◽  
Germplasm Diversity

Burgeoning the human population with its required food demand created a burden on ever-decreasing cultivated land and our food production systems. This situation prompted plant scientists to breed crops in a short duration with specific traits. Marker-assisted selection (MAS) has emerged as a potential tool to achieve desirable results in plants with the help of molecular markers and improves the traits of interest in a short duration. The MAS has comprehensively been used in plant breeding to characterize germplasm, diversity analysis, trait stacking, gene pyramiding, multi-trait introgression, and genetic purity of different cereals, pulses, oilseeds, and fiber crops, etc. Mapping studies pointed out several marker-trait associations from different crop species, which specifies the potential application of MAS in accelerating crop improvement. This chapter presents an overview of molecular markers, their genesis, and potential use in plant breeding.

scholarly journals Genetic Markers, Map Construction, and Their Application in Plant Breeding

HortScience ◽  
1996 ◽  
Vol 31 (5) ◽  
pp. 729-741 ◽  
Author(s):  
Jack E. Staub ◽  
Felix C. Serquen ◽  
Manju Gupta
Keyword(s):  
Plant Breeding ◽  
Genetic Markers ◽  
Map Construction

Marker assisted selection in livestock

1996 ◽  
Vol 1996 ◽  
pp. 52-52
Author(s):  
P.M. Visscher ◽  
S. Van der Beek ◽  
C.S. Haley
Keyword(s):  
Quantitative Trait Loci ◽  
Genetic Markers ◽  
Quantitative Trait ◽  
Marker Assisted Selection ◽  
Rapid Development ◽  
Carcass Quality ◽  
Direct Test ◽  
Genome Maps ◽  
Livestock Breeding ◽  
Breeding Programmes

With the rapid development of genome maps of livestock, many genetic markers are becoming available. These markers usually have no affect on animals in their own right, their value is that they allow the inheritance of sections of chromosome to be followed in suitable pedigrees. How then may genetic markers be used in livestock breeding? It is useful to distinguish the use of markers in selection programmes within breeds and crossbreeding programmes. Furthermore, for both types of breeding programmes there are different kinds of information that can be provided by markers. Genetic markers may be linked to major genes, or in some cases we may have a direct test for a mutation which causes a major difference in animal performance or phenotype. Alternatively, we may have markers which are linked to (unknown) quantitative trait loci (QTLs), i.e. loci which influence traits such as growth, milk yield, carcass quality and litter size.

Marker assisted selection in plant breeding: Current status, challenges and future opportunities

2021 ◽  
Vol 21 (1) ◽  
pp. 166-176
Author(s):  
M.K. Sarma ◽  
A.S. Nizamuddin Ahmed ◽  
Daizi Durba Saharia ◽  
A.K. Sarma
Keyword(s):  
Plant Breeding ◽  
Marker Assisted Selection ◽  
Current Status
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