Molecular genetics plays an important role in many aspects of conservation such as the characterization of plant genetic diversity for purposes of improved acquisition, maintenance and use. In general, studies of phylogeny and species evaluation have been undertaken and have produced a considerable amount of valuable information. More recently, the molecular techniques have been applied to problems of direct relevance in order to understand distribution and extent of variation within and between species and accessions.
Global Plan of Action
The Global Plan of Actionprovides a comprehensive scientific and technical framework for international and national action at the global level.
It was adopted by 150 countries in 1996 through the Leipzig Declaration and was endorsed by the World Food Summit Plan of Action and the CBD (FAO, 1996b). The Global Plan of Actionpresents 20 Priority Activity Areas (PAA).
The Global Plan of Actionidentifies a role for biotechnologies in
PAA 11:“Promoting sustainable agriculture through diversification of crop production and broader diversity in crops”.
One of its objectives is: “to promote the goal of higher levels of genetic diversity consistent with productivity increase and agronomic needs, including in crop production, plant breeding and biotechnological research and development settings”. Regardy capacity: “governments, and their national agricultural research systems, supported by the International Agricultural Research Centres, and other research and extension organizations should: make use of modern biotechnological techniques as feasible, to facilitate broadening of the genetic base of crops”.
Biotechnologies have a role in realizing other priority activities of the Global Plan of Action,in particular, but not exclusively :
PAA 5: “Sustaining existing ex situcollections”;
PAA 8: “Expanding ex situ conservation activities”;
PAA 9: “Expanding characterization, evaluation and number of core collections to facilitate use”;
and PAA 10: “Increasing genetic enhancement and base-broadening efforts”.
Roles of molecular technology in studies of plant genetic resources
Genetic diversity studies
Genetic relatedness and diversity
Studying polymorphism in landraces and cultivars
Identification of cultivars and taxonomy
Phylogenetic studies
Comparative mapping
Germplasm management
Taxonomic characterization of germplasm
Maintenance of collections
Development conservation strategies
Germplasm use
Gene mapping and identification
Marker-assisted selection in plant breeding
Detecting somaclonal variation
Evaluating germplasm for useful genes
Objectives of MGL in NGBGR
Detect polymorphism and phylogenetic relationships between accessions.
Identify fingerprints of Egyptian germplasm.
Monitor genetic stability in conserved materials.
Determine specific molecular markers for agronomically desired characteristics.
