Dataset Information

Vitamin C and reducing sugars in the world collection of Capsicum baccatum L. genotypes.

ABSTRACT: This study aimed to analyze 123 genotypes of Capsicum baccatum L. originating from 22 countries, at two stages of fruit development, for vitamin C content and its relationship with reducing sugars in fruit pericarp. Among the parametric population, vitamin C and reducing sugar concentrations ranged between 2.54 to 50.44 and 41-700mgg(-1) DW of pericarp, respectively. Overall, 14 genotypes accumulated 50-500% of the RDA of vitamin C in each 2g of fruit pericarp on a dry weight basis. Compared with ripened fruits, matured (unripened) fruits contained higher vitamin C and lower reducing sugars. About 44% variation in the vitamin C content could be ascribed to levels of reducing sugars. For the first time, this study provides comprehensive data on vitamin C in the world collection of C. baccatum genotypes that could serve as a key resource for food research in future.

SUBMITTER: Perla V

PROVIDER: S-EPMC4911803 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature

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Vitamin C and reducing sugars in the world collection of Capsicum baccatum L. genotypes.

Perla Venu V Nimmakayala Padma P Nadimi Marjan M Alaparthi Suresh S Hankins Gerald R GR Ebert Andreas W AW Reddy Umesh K UK

Food chemistry 20160204

This study aimed to analyze 123 genotypes of Capsicum baccatum L. originating from 22 countries, at two stages of fruit development, for vitamin C content and its relationship with reducing sugars in fruit pericarp. Among the parametric population, vitamin C and reducing sugar concentrations ranged between 2.54 to 50.44 and 41-700mgg(-1) DW of pericarp, respectively. Overall, 14 genotypes accumulated 50-500% of the RDA of vitamin C in each 2g of fruit pericarp on a dry weight basis. Compared wit ...[more]

PMID: 26920284

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Project description:BACKGROUND:The exotic pepper species Capsicum baccatum, also known as the aji or Peruvian hot pepper, is comprised of wild and domesticated botanical forms. The species is a valuable source of new genes useful for improving fruit quality and disease resistance in C. annuum sweet bell and hot chile pepper. However, relatively little research has been conducted to characterize the species, thus limiting its utilization. The structure of genetic diversity in a plant germplasm collection is significantly influenced by its ecogeographical distribution. Together with DNA fingerprints derived from AFLP markers, we evaluated variation in fruit and plant morphology of plants collected across the species native range in South America and evaluated these characters in combination with the unique geography, climate and ecology at different sites where plants originated. RESULTS:The present study mapped the ecogeographic distribution, analyzed the spatial genetic structure, and assessed the relationship between the spatial genetic pattern and the variation of morphological traits in a diverse C. baccatum germplasm collection spanning the species distribution. A combined diversity analysis was carried out on the USDA-ARS C. baccatum germplasm collection using data from GIS, morphological traits and AFLP markers. The results demonstrate that the C. baccatum collection covers wide geographic areas and is adapted to divergent ecological conditions in South America ranging from cool Andean highland to Amazonia rainforest. A high level of morphological diversity was evident in the collection, with fruit weight the leading variable. The fruit weight distribution pattern was compatible to AFLP-based clustering analysis for the collection. A significant spatial structure was observed in the C. baccatum gene pool. Division of the domesticated germplasm into two major regional groups (Western and Eastern) was further supported by the pattern of spatial population structure. CONCLUSIONS:The results reported improve our understanding of the combined effects of geography, ecology and human intervention on organization of the C. baccatum genepool. The results will facilitate utilization of C. baccatum for crop improvement and species conservation by providing a framework for efficient germplasm collection management and guidance for future plant acquisitions.

Dataset Information

Vitamin C and reducing sugars in the world collection of Capsicum baccatum L. genotypes.

Publications

Vitamin C and reducing sugars in the world collection of Capsicum baccatum L. genotypes.

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