Applications of molecular markers in breeding

Hash, C T and Hoisington, D A and Varshney, R K and et al, . (2007) Applications of molecular markers in breeding. Documentation. International Crops Research Institute for Semi-Arid Tropics, Patancheru, Andhra Pradesh, India. (Unpublished)

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Abstract

Molecular markers now provide appropriate complements to conventional breeding methods in most crops in ICRISAT’s germplasm conservation and crop improvement mandates. Where appropriate molecular markers are available, they are effective and sometimes appropriate, tools for crop improvement research addressing biological components in agricultural production systems. Molecular markers offer specific advantages in the assessment of genetic diversity and in trait-specific crop improvement. Molecular markers are almost infinitely superior to conventional morphological marker genes for mapping or tagging gene blocks associated with economically important traits. Gene tagging and QTL mapping in turn permit marker-assisted selection (MAS) in backcross, pedigree and population improvement programs, which can be especially useful for crop traits that are otherwise difficult or impossible to deal with by conventional means. Near-isogenic products of marker-assisted backcrossing programs can in turn provide not only improved cultivars, but also useful genetic tools facilitating improved understanding of mechanisms of abiotic stress tolerance or mechanisms of host plant resistance to pests and diseases that are critical components of integrated crop management systems. Finally, when relatively high-density marker-based fingerprinting of elite breeding lines is possible, this can be combined with pedigree information and multi-environment performance data sets to greatly enhance the ability of conventional breeding programs to design new cultivars, identify desirable recombinants, and track factors controlling complex traits and trait combinations.

Item Type: Monograph (Documentation)
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Others > Genetics and Genomics
Others > Agriculture-Farming, Production, Technology, Economics
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 03 Apr 2012 09:37
Last Modified: 03 Apr 2012 09:37
URI: http://oar.icrisat.org/id/eprint/5838
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