Analysis of sweetpotato shoot traits diversity and its relationship with storage root yield under short-period cultivation

Sakaigaichi, Takeo; Terajima, Yoshifumi; Suematsu, Koichi; Kamada, Erika; Kobayashi, Akira; Kawata, Yukari

doi:10.1007/s10722-023-01633-5

Cited by 2 publications

(1 citation statement)

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“…The most dominant varieties of sweet potato are the white-fleshed (have no βcarotene), yellow-fleshed (limited or no βcarotene and the presence of other carotenoids) (Mwanga et al, 2021), and orangefleshed sweet potato (a variant of white-fleshed sweet potato) rich in βcarotene frequently used in interventions to alleviate vitamin A deficiency in SSA (Laurie et al, 2022). Variations in sweet potato genotypes include skin and flesh colour, depth of rooting, shape and size of root storage, partitioning of dry matter content, and variation in resistance to biotic and abiotic stress (McGregor & LaBonte, 2006;Sakaigaichi et al, 2024;Vimala & Hariprakash, 2011).…”

Section: Introductionmentioning

confidence: 99%

Trends and gaps in sweet potato (Ipomoea batatas L.) improvement in sub‐Saharan Africa: Drought tolerance breeding strategies

Makhubu,

Laurie,

Rauwane

et al. 2024

Food and Energy Security

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The main challenge facing agricultural crop production in the current global climate change scenario is sustainability. Drought, as a yield‐limiting factor, has become a major threat to international food security. Tolerance to drought is a complex trait and its response is carried out by various genes, transcription factors, microRNAs, hormones, proteins, cofactors, ions and metabolites. The complexity of the trait has limited the development of drought‐tolerant sweet potato cultivars by traditional breeding. Advances in sweet potato breeding to exploit the full potential of the crop to contribute to improved and higher performing sweet potato cultivars, adapted to increasingly risky rainfed conditions, mainly drought, are key to making food production systems more efficient and more tolerant to pressure from drought and other stressors. Genetic gain for yield potential in sweet potato has improved mostly in African countries, mainly as a result of an accelerated breeding scheme. The focus on maximising the utilisation of molecular tools for sweet potato improvement and yield has been recently explored in breeding programmes in sub‐Saharan Africa (SSA). This article provides an update on the trends and gaps in sweet potato breeding in SSA, reviewing the relevant strategies used to improve sweet potato in the region. Finally, the perspectives of using new advanced tools including genetic engineering and genome editing, and the challenges associated with climate change for further improvement of the crop are highlighted. Collaborative efforts in African countries are driving advances in breeding methods through the incorporation of molecular tools to develop drought‐tolerant sweet potato varieties that are important to global food security despite challenges posed by the drastic change in climate.

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