Genetic diversity of sweet potatoes [Ipomoea batatas (L) Lam.] in Ecuador

Monteros, Álvaro; Paredes, D.; Buitrón-Bustamante, Johanna Liseth; Tapia, César; Peña, Guadalupe

doi:10.1007/s10722-020-00987-4

Cited by 6 publications

(6 citation statements)

References 33 publications

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“…Similar results were found in the studies by Ref. [ 10 ], who detected 89 alleles with an average of 11.12 alleles per locus. The mean number of polymorphic alleles in the present study was higher (11.9) than those reported by Refs.…”

Section: Discussionsupporting

confidence: 91%

“…Furthermore, studies by Ref. [ 10 ] also used 8 SSR markers to assess the genetic diversity of 68 sweetpotato genotypes. Similar results were found in the studies by Ref.…”

Section: Discussionmentioning

confidence: 99%

“…It originated in Central America [ 5 , 6 ]. The greatest genetic diversity of sweetpotato, including wild relatives, is in Central America, making it the primary centre of diversity and most likely the centre of origin of the species [ 7 , 8 , 9 , 10 ]. Many sweetpotato landraces are found in East Africa, which is considered to be the secondary center of diversity [ 6 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Selection of Sweetpotato Parental Genotypes Using Simple Sequence Repeat Markers

Naidoo

Laurie

Amelework

et al. 2022

Plants

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Knowledge of the genetic diversity and genetic relationship is important in crop improvement. The objective of this study was to determine the genetic diversity of 31 sweetpotato genotypes and furthermore to select distantly related individuals for breeding of superior parental clones. The genotypes (sourced from the Agricultural Research Council, South Africa) originating from Africa and American continent were genotyped using eight highly polymorphic SSR markers. The SSR markers generated a total of 83 putative alleles. The polymorphic information content (PIC) of the tested simple sequence markers varied from 0.73 to 0.91, with a mean of 0.85. At least 11 different alleles were found in 8 loci within the population, with 7 effective alleles per locus. Although high diversity was found among the genotypes, genetic distances among the genotypes were relatively low. Cluster analysis revealed the existence of three distinct genetic groups, and the clustering patterns follow to some extent the geographic origin and pedigree of the genotypes. High gene flow was observed among different sweetpotato accessions. The selected SSR markers were found to be highly polymorphic with high discriminatory power for genetic characterization studies and are useful genomic tool to complement phenotyping of sweetpotato genotypes. Two heterotic groups were found in the study. The heterotic group A was composed of 14 genotypes mainly of South African origin, while the heterotic group B consisted of 17 genotypes of American origin. The two distinct groups were important for the selection of breeding clones that were distantly related to be used as parental clones in the advancement of traits of interest.

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Section: Discussionsupporting

confidence: 91%

“…Furthermore, studies by Ref. [ 10 ] also used 8 SSR markers to assess the genetic diversity of 68 sweetpotato genotypes. Similar results were found in the studies by Ref.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selection of Sweetpotato Parental Genotypes Using Simple Sequence Repeat Markers

Naidoo

Laurie

Amelework

et al. 2022

Plants

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“…Significant and positive correlations (Table S2 in ESM) were observed between the number of lobes and petiole pigmentation (P < 0.001), vine pubescence and lobe type (P < 0.01), number of lobes and leaf appearance (P < 0.01), vine tip pubescence and predominant vine colour, mature leaf colour, lobe number, petiole pigmentation, general leaf appearance (P < 0.05). Variables were reported as discriminant variables for genetic diversity study among sweetpotato germplasm (Reddy et al 2018;Monteros-Altamirano et al 2021). Positive correlations between flesh colour and sweetpotato virus disease resistance (Aliou et al 2020) and between flesh colour and beta-carotene concentrations (Burgos et al 2009) were used for best genotype identification and selection.…”

Section: Resultsmentioning

confidence: 99%

Crossing possibility for breeding promising orange-fleshed sweetpotato genotypes in Benin

Sohindji,

J.-B. Quenum,

Fassinou-Hotegni

et al. 2023

CZECH J GENET PLANT

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Orange-fleshed sweetpotato (OFSP) is a sustainable and inexpensive source of vitamin A that contributes to food and nutritional security in developing countries. Its adoption is low due to unconformity of the variety with community food culture, limited cultivar selection and breeding studies. The current study aimed at breeding of promising OFSP genotypes in Benin using three parental lines. Two hundred and seventy-four seeds and one hundred and six genotypes were obtained through biparental crosses of Tio-joe (imported orange-fleshed variety), Vobodouaho (local white-fleshed variety) and ACAB220 (local orange-fleshed variety). The phenotypic diversity of genotypes was assessed using 10 leaf characters and storage root flesh colour through multiple correspondence analysis and hierarchical cluster analysis. The results indicated cross-compatibility between Tio-joe and ACAB220 when ACAB220 was used as female. Reciprocal cross-compatibility was found between ACAB220 and Vobodouaho. The genotypes could be separated into two main populations and classified into five cluster groups. Promising intermediate and pale orange genotypes were obtained indicating possibilities to incorporate beta-carotene into the white background of the Vobodouaho variety through further backcrossing.

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“…In relation to sweet potato phenology traits, as a result of the self-incompatibilities or the absence of production of flower, the only procedure capable of obtain ingstorage roots is by vegetative or clonal plant propagation in non-tropical climes ( Monteros-Altamirano et al., 2021 ; Behera et al., 2022 ). The vegetative propagation over generations produces the accumulation of viral diseases in the crop, leading to reduced storage root yields in 80%–90%, even in the cases of asymptomatic viral diseases inducing the absence of foliar visible symptoms ( Mukasa et al., 2003 ; Tairo et al., 2004 ; Adikini et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Optimizing sweet potato production: insights into the interplay of plant sanitation, virus influence, and cooking techniques for enhanced crop quality and food security

Villalba,

Martínez-Ispizua,

Morard

et al. 2024

Front. Plant Sci.

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This study investigates the impact of sweet potato plant sanitation on the yield and external and internal quality root storage exploring the nutritional content affected by various cooking methods (raw, boiled, and oven-cooked). The presence of viruses, and concretely of the sweet potato leaf curl virus (SPLCV), in sweet potato propagation material is shown to significantly reduce yield and modify storage root quality. Notably, the research reveals a substantial improvement in crop yield and external quality, reinforcing the efficacy of plant sanitation methods, specifically apical meristem culture, in preserving the overall productivity of sweet potato crops. Furthermore, the investigation identifies a noteworthy decrease in starch content, suggesting a dynamic interaction between plant sanitation and starch metabolism in response to viral diseases. The study also delves into the alteration of mineral absorption patterns, shedding light on how plant sanitation influences the uptake of essential minerals in sweet potato storage roots. While the health status of the plants only slightly affected magnesium (Mg) and manganese (Mn) accumulation, indicating a potential resilience of mineral balance under virus-infected conditions. Moreover, the research identifies significant modifications in antioxidant levels, emphasizing the role of plant sanitation in enhancing the nutritional quality of sweet potatoes. Heat-treated storage roots, subjected to various cooking methods such as boiling and oven-cooking, exhibit notable differences in internal quality parameters. These differences include increased concentrations of total soluble solids (SS) and heightened levels of antioxidant compounds, particularly phenolic and flavonoid compounds. The observed increase in antioxidant capacity underscores the potential health-promoting benefits associated with plant sanitation practices. Overall, the study underscores the critical importance of plant sanitation in enhancing sweet potato production sustainability, contributing to food security, and supporting local agricultural economies. The results emphasize the need for further research to optimize plant sanitation methods and promote their widespread adoption globally, providing valuable insights into the complex relationships in food quality.

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Genetic diversity of sweet potatoes [Ipomoea batatas (L) Lam.] in Ecuador

Cited by 6 publications

References 33 publications

Selection of Sweetpotato Parental Genotypes Using Simple Sequence Repeat Markers

Selection of Sweetpotato Parental Genotypes Using Simple Sequence Repeat Markers

Crossing possibility for breeding promising orange-fleshed sweetpotato genotypes in Benin

Optimizing sweet potato production: insights into the interplay of plant sanitation, virus influence, and cooking techniques for enhanced crop quality and food security

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