QTL Analysis in Rice Improvement: Concept, Methodology and Application
Titel:
QTL Analysis in Rice Improvement: Concept, Methodology and Application
Auteur:
Parvez Sofi A.G. Rather
Verschenen in:
Biotechnology
Paginering:
Jaargang 6 (2007) nr. 1 pagina's 1-13
Jaar:
2007
Inhoud:
Plant breeding is the management of genetic variability. A large number of traits of economic importance are quantitative in nature and are characterized by continuous variation owing to large number of genes governing them. Advances in molecular biology have helped to dissect these traits into finer details but we are still far from precise location and enumeration of the genes conditioning a quantitative trait. Various aspects of study of quantitative traits are number of genes, chromosomal locations, allelic and non-allelic interactions, G x E interaction and pleiotropy effects. QTL mapping is an integration of linkage mapping and traditional statistical and quantitative genetic approaches. Various methods of QTL mapping such as single marker analysis, interval mapping, composite interval mapping and multi trait mapping have been standardized using several mapping populations such as F2, back cross, RIL’s, NIL’s and double haploids and various software packages. A large number of QTL’s have been identified for various economic traits which account for a sizeable proportion of the genetic variation and as such is turning out to be more than just a statistical inference. Advances in QTL mapping will help in genetic analysis of complex traits, plant genomics, germplasm enhancement, improved selection efficiency through MAS and studying gene expression along growth and developmental phases of plant life.
Uitgever:
Asian Network for Scientific Information (provided by DOAJ)
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