Assessment of the genetic diversity of sweetpotato germplasm collections for protein content

Laurie, S. M.; Naidoo, Sónia Inês Messo; Magwaza, Lembe Samukelo; Shimelis, Hussein; Laing, Mark

doi:10.1016/j.sajb.2020.03.041

Cited by 9 publications

(2 citation statements)

References 28 publications

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“…The importance of dry matter for sweetpotato root quality evaluation during storage lies in its association with texture, starch and sugar content, nutrient density, postharvest changes, water content, shelf life, storage duration, and suitability for culinary use and processing ( Zhang, Wheatley, & Corke, 2002 ). While protein content is not typically the primary indicator in evaluating sweetpotato root quality, it can indirectly impact certain aspects of storage and overall quality ( Laurie, Naidoo, Magwaza, Shimelis, & Laing, 2020 ). Starch is a crucial component in sweetpotato roots and serves as the primary storage carbohydrate.…”

Section: Applications Of Nir For Sweetpotato Quality Evaluation At Di...mentioning

confidence: 99%

NIR sensors combined with chemometric algorithms in intelligent quality evaluation of sweetpotato roots from ‘Farm’ to ‘Table’: Progresses, challenges, trends, and prospects

Wang,

Xing,

et al. 2024

Food Chemistry: X

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Section: Applications Of Nir For Sweetpotato Quality Evaluation At Di...mentioning

confidence: 99%

NIR sensors combined with chemometric algorithms in intelligent quality evaluation of sweetpotato roots from ‘Farm’ to ‘Table’: Progresses, challenges, trends, and prospects

Wang,

Xing,

et al. 2024

Food Chemistry: X

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“…There are ongoing efforts to determine the genetic diversity of these collections (Naidoo et al., 2021, 2022; Selacoe et al., 2019). One study provided protein data for a large set of sweet potato accessions (227) from various parts of the world and near‐infrared spectroscopy (NIRS) calibration for determination of RPC which is useful for sweet potato breeding for improving storage RPC (Laurie et al., 2020; Magwaza et al., 2016). RPC values varied from 2.65% to 6.45% as measured by the Dumas combustion and 0.68%–11.51% for NIRS.…”

Section: Research and Development Contributions Of The Arcmentioning

confidence: 99%

Seventy years of sweet potato [Ipomoea batatas L. (LAM)] research in South Africa

Laurie,

Mulabisana,

Sutherland

et al. 2023

Crop Science

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The 2030 Agenda for Sustainable Development Goals (SDG) of the United Nations puts forward a transformational vision to cope with food security, nutrition and health challenges, in which sweetpotato can play an important role. Globally sweetpotato production is valued at US$53.83 billion. The ARC sweetpotato research and development (R&D) program over the past seven decades delivered 31 genetically improved cultivars via demand‐led breeding, managed the collection and maintenance of 375 accessions, contributed towards the optimization of cultivation practices, developed crop protection and diagnostic services, provided stream‐lined seed systems and technology transfer in processing and enterprise development. The ARC's work is part of a large number of interdependent global programs committed to improving livelihoods and nutrition through sweetpotato. This review shares and analyses major achievements, highlights unique research contributions achieved through partnerships and discusses bottlenecks on funding and up‐take of technologies. New research imperatives will involve root phenotyping, employing marker‐based technologies and genome‐wide association studies through new funding received recently. Exploration of the commercialization potential of processed products made from orange‐fleshed sweetpotato will be a major focus of the R&D program. Expansion of partnerships, marketing and financing will be important for future contribution of sweetpotato to the economy.This article is protected by copyright. All rights reserved

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Early generation clonal selection of sweetpotato (Ipomoea batatas (L.) Lam) using an accelerated breeding scheme

Naidoo,

Laurie,

Booyse

et al. 2024

Euphytica

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The breeding stages of a clonally propagated crop entails several steps and can take more than five years from hybridisation till cultivar release. The Accelerated Breeding Scheme (ABS) in sweetpotato relies on the use of multiple locations at the early breeding stages to reduce the years required for field evaluation. The aim of the study was to select the best progenies based on the ABS in sweetpotato towards the development of genotypes that combine high protein content with other important agronomic traits. Botanical seeds were generated from crosses between two diverse sets of parents, crossed using a North Carolina II design. F1-progenies (n = 363) were planted in a lattice design at three distinct locations during the 2017/18 planting season. Parameters recorded included pest and disease infestation, storage root traits and yield components, root protein content and nutrient related traits. Nutrient content was determined by near-infrared spectrometry. Analysis of variance and multiple t-distribution test and best test grouping were performed. There were significant differences (p < 0.001) among the genotypes for total number of roots, total root yield, marketable number of roots and marketable yield. The severity of Alternaria blight was significantly higher at Jozini. Forty progenies were selected (12.8% selection pressure) based on agronomic performance. Using the nutrient content results, four promising orange-fleshed clones (NC12-9, NC53-11, NC55-8, NC55-2) and one cream-fleshed clone (NC51-1) were identified with high storage root protein, iron and zinc contents. NC51-1 and NC55-2 produce promising storage root yields. The ABS approach is resource-demanding in the first phase but advances progenies rapidly to the subsequent breeding phases for cultivar release.

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Assessment of the genetic diversity of sweetpotato germplasm collections for protein content

Cited by 9 publications

References 28 publications

NIR sensors combined with chemometric algorithms in intelligent quality evaluation of sweetpotato roots from ‘Farm’ to ‘Table’: Progresses, challenges, trends, and prospects

NIR sensors combined with chemometric algorithms in intelligent quality evaluation of sweetpotato roots from ‘Farm’ to ‘Table’: Progresses, challenges, trends, and prospects

Seventy years of sweet potato [Ipomoea batatas L. (LAM)] research in South Africa

Early generation clonal selection of sweetpotato (Ipomoea batatas (L.) Lam) using an accelerated breeding scheme

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