title: Sampling strategies and variability in fruit pulp micronutrient contents of west and central african bananas and plantains (Musa species).
abstract: The variability in fruit micronutrient contents in a selection of Central and West African Musa varieties cultivated under standardized field conditions was studied. Analysis of the within-fruit, within-hand, and within-plant as well as the between-plant variations demonstrated that both provitamin A carotenoids (pVACs) and mineral micronutrient (Fe, Zn) contents vary significantly across all sample groups. The variations in pVACs contents appear to be at least partly related to differences in the developmental status of the fruit, but the observed trends were genotype-specific. The mean pVACs concentrations per genotype indicated that there is substantial genetic variation in the fruit pVACs contents between Musa cultivars, with orange-fleshed plantain varieties (AAB) having generally higher fruit pVACs contents than dessert bananas (AAA). It was not possible to identify consistent trends between the sampling position and fruit Fe/Zn contents. Once the within-bunch micronutrient variability has been accounted for, the mean variations in fruit micronutrient contents between individual plants of a variety generally fell to within acceptable limits. Results are discussed within the framework of standardizing sampling and developing strategies to screen for the nutritional values of new and existing Musa varieties.
authors.affiliation: Laboratory for Fruit Breeding and Biotechnology, Division of Crop Biotechnics, Catholic University of Leuven, De Croylaan 42, Heverlee, Leuven, Belgium. Mark.Davey@biw.kuleuven.be
authors.forename: Mark W
authors.initials: MW
authors.lastname: Davey
authors.forename: Ellen
authors.initials: E
authors.lastname: Stals
authors.forename: Gérard
authors.initials: G
authors.lastname: Ngoh-Newilah
authors.forename: Kodjo
authors.initials: K
authors.lastname: Tomekpe
authors.forename: Charlotte
authors.initials: C
authors.lastname: Lusty
authors.forename: Richard
authors.initials: R
authors.lastname: Markham
authors.forename: Rony
authors.initials: R
authors.lastname: Swennen
authors.forename: Johan
authors.initials: J
authors.lastname: Keulemans
mesh_terms: D000350:Africa, Central; D000354:Africa, Western; D002338:Carotenoids / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D007501:Iron / Q000032:analysis; D018977:Micronutrients / Q000032:analysis*; D028521:Musa / Q000737:chemistry*; D009753:Nutritive Value; D010943:Plantago / Q000737:chemistry*; D014801:Vitamin A / Q000032:analysis; D015032:Zinc / Q000032:analysis
chemical_list: D018977:Micronutrients; D014801:Vitamin A; D002338:Carotenoids; D007501:Iron; D015032:Zinc