Identification and characterization of germplasm is important for efficient management strategies in conservation and utilization of plant genetic resources. This investigation aimed to assess genetic diversity of 47 ginger landraces from Burkina Faso base on polymorphism of eight SSR primers. Seven of theses primers produced 60 loci out of which 95.3% were found to be polymorphic.

The number of loci ranged from two to 15 with an average of 8.571 loci per primer. Values for Nei’s genetic diversity or expected heterozygosity (He) varied from 0.123 to 0.454 with an average of 0.314. Whereas, the mean polymorphism information content (PIC) ranged from 0.119 to 0.443 with an average of 0.302.

The high polymorphism (95.32%) depicted showed the existence of a genetic variability within the ginger accessions. Dendrogram based on seven SSR markers using Neighbour-Joining method classified all the ginger accessions into three genetic groups with 20, 25 and 2 accessions respectively for groups 1, 2 and 3.

The accession gathering in three distincts groups is not according to their origin. This investigation showed the genetic diversity in germplasm of West regions of Burkina Faso. That provides important genetic information for the germplasm conservation and of ginger improvement breeding programs.

Auteurs : Hervé Nandkangré, Mahama Ouedraogo, Souleymane Bado, Serge Félicien Zida, Aimé Sévérin Kima and Mahamadou Sawadogo

Source : http://www.journalcra.com/