Morphological and genetic characterization of mango varieties in Mozambique

Abstract: 
Mangoes are economically important for Mozambique because of adequate climatic conditions and international market opportunities. This study compare morphological and AFLP characterisation of 30 mango varieties from the Umbeluzi research station, including some commercial varieties. The total variation was lower using quantitative (89.4% similarity) than qualitative data (60% similarity). The combined quantitative and qualitative dendrogram had a total variation of 63% similarity and clustered varieties in three subgroups based on high fruit weight, high Brix content and low fruit weight. AFLP characterisation used seven primers combinations, generating 207 data points and detecting 74.9% polymorphisms with an average of 30 fragments per primer combination. The total variation was low (72.49% similarity) and the dendrogram showed five subgroups based on low fruit weight, dwarfness and low Brix content, commercial varieties, high fruit weight and roundish fruit shape. The combined morphological and AFLP dendrogram was more accurate in clustering varieties based on geographic origin within the country and from outside.
Les mangues sont économiquement importantes pour le Mozambique en raison des bonnes conditions climatiques et les opportunités du marché international. Cette étude compare la caractérisation morphologique et AFLP de 30 variétés de mangues de la station de recherche Umbeluzi, incluant certaines variétés commerciales. La variation totale était inférieure en utilisant une quantitative (89,4% de similarité) que des données qualitatives (60% de similarité). Le dendrogramme combinés quantitative et qualitative a une variation totale de la similarité de 63% et variétés regroupées en trois sous-groupes en fonction du grand poids de fruits, de la haute teneur en Brix et du faible poids du fruit. La caractérisation AFLP a utilisé sept combinaisons d’amorces, produisant 207 points de données et détectant de polymorphismes de 74,9% avec une moyenne de 30 fragments par combinaison d’amorces. La variation totale était faible (72,49% de similitude) et le dendrogramme a montré cinq sousgroupes en fonction du poids faible des fruits, de la petitesse de fruit et une faible teneur Brix, les variétés commerciales, le grands poids des fruits et la forme arrondie fruits. Le dendrogramme combinés morphologiques et AFLP a été plus précis en matière de regroupement des variétés en fonction de leur origine géographique dans le pays et à l’extérieur.
Language: 
Date of publication: 
2010
Country: 
Region Focus: 
Southern Africa
Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
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ISSN: 
E_ISSN: 
Edition: 
Extent: 
991-995
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About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Plant Breeding"