Marker Assisted Selection: a Fast Track to Increase Genetic Gain in Plant and Animal Breeding? Session I: Mas in Plants
نویسنده
چکیده
The development of molecular techniques for genetic analysis has led to a great increase in our knowledge of cereal genetics and our understanding of the structure and behaviour of cereal genomes. These molecular techniques, in particular the use of molecular markers, have been used to monitor DNA sequence variation in and among the species and create new sources of genetic variation by introducing new and favourable traits from landraces and related grass species. Improvements in marker detection systems and in the techniques used to identify markers linked to useful traits, has enabled great advances to be made in recent years. While RFLP markers have been the basis for most work in crop plants, valuable markers have been generated from RAPDs and AFLPs. Simple sequence repeats (SSR) or microsatellite markers have been developed more recently for major crop plants and this marker system is predicted to lead to even more rapid advances in both marker development and implementation in breeding programs. Identification of markers linked to useful traits has been based on complete linkage maps and bulked segregant analysis. However, alternative methods, such as the construction of partial maps and combination of pedigree and marker information, have also proved useful in identifying marker/trait associations. A revision of current breeding methods by utilising molecular markers in breeding programmes is, therefore, crucial in this phase. This review provides an overview of current stage of these developments, examines some of special issue that have used in applying molecular techniques to molecular breeding of cereals species.
منابع مشابه
Marker Assisted Selection: a Fast Track to Increase Genetic Gain in Plant and Animal Breeding? Session I: Mas in Plants
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