Agronomic performance of new cream to yellow-orange sweetpotato cultivars in diverse environments across South Africa

Laurie, S. M.; Tjale, S. S.; Berg, A. A. van den; Mtileni, M. M.; Labuschagne, Maryke

doi:10.1080/02571862.2015.1014436

Cited by 7 publications

(2 citation statements)

References 21 publications

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“…The breeding approach here was re-evaluation of clones in the germplasm collection and incorporating African imports into the polycross program. Seven cream-fleshed cultivars were released in 2003 [ 12 ]. Of these, Ndou and Monate are gaining popularity on the informal market.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Nutritional Composition and Drought Tolerance Traits of Sweet Potato: Selection Criteria for Breeding Lines

Laurie

Bairu

Laurie

2022

Plants

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Sweet potato is an important world staple with the potential to address hunger and malnutrition. The Agricultural Research Council of South Africa has led sweet potato breeding efforts in the country since 1952 and released several important cultivars. More detailed quality assessments are necessary in addition to general breeding criteria. The present study investigated sweet potato cultivars and elite clones for (1) their nutritional composition; (2) biochemical reaction to drought stress; (3) correlate biochemical reaction to root yield for possible identification of screening methods for drought tolerance in sweet potato. Orange-fleshed cultivars, in particular Bophelo, had superior contents of Fe, Zn, Mg, Ca, Mn, and dietary fiber. Cream-fleshed cultivars, particularly Ndou, were higher in starch and carbohydrate. When sweet potato cultivars were subjected to drought stress, significant changes were noted in most antioxidant enzymes, chlorophyll and proline concentrations, and 13C discrimination. All of these showed significant correlations with root yield. For screening of drought tolerance, the determination of nitrate reductase, proline, and chlorophyll concentrations at 60 days after planting are recommended. Ndou was less affected by drought stress. Bophelo and Ndou, which are gaining popularity on the informal market, have superior nutritional value and are good cultivar choices for food security and addressing malnutrition.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Nutritional Composition and Drought Tolerance Traits of Sweet Potato: Selection Criteria for Breeding Lines

Laurie

Bairu

Laurie

2022

Plants

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“…‘Blesbok’, a cultivar with purple skin, is known for its high yield and low dry matter content [ 11 , 12 ]. Ndou and Monate have a high yield and high dry matter content, with cream flesh and cream skin [ 13 ]. Additionally, there are orange-fleshed cultivars with a high β-carotene content, such as Bophelo and Khumo.…”

Section: Introductionmentioning

confidence: 99%

Phytonutritional Composition and Antioxidant Properties of Southern African, Purple-Fleshed Sweet Potato (Ipomoea batatas (L.) Lam.) Storage Roots

Ngcobo,

Mianda,

Seke

et al. 2024

Antioxidants

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Purple sweet potatoes (Ipomoea batatas (L.) genotype) in Southern Africa have a phytonutritional composition and antioxidant properties that can increase incomes and improve nutrition. This study compared the phytonutrient composition and antioxidant properties of four purple-colour sweet potato genotypes (local Purple-purple, ‘2019-1-1’, and USA genotypes, ‘08-21P’ and ‘16-283P’). These purple sweet potato genotypes were characterised by UPLC/QTOF/MS and 16 phenolic compounds were identified. Purple-purple (very dark purple) showed the highest concentration of cyanidins and peonidin derivatives. Chlorogenic acid derivatives were highest in the genotype ‘16-283P’. ‘Puple-purple’ and ‘16-283P’ displayed the strongest antioxidant power and scavenging activities. Diaffeoylquinic acid isomer 1 was identified as the marker candidate for distinguishing the four purple sweet potato genotypes. Southern Africa’s highest-protein sweet potato genotypes are Purple-purple (28.81 g/100 g) and ‘08-21 P’ (24.31 g/100 g). A 13.65 g portion of ‘2019-1-1′ would meet the Recommended Dietary Allowance (RDA) for iron for men, while 25.59 g would meet the RDA for children, and 30.72 g would meet the RDA for women. The sweet potato root of genotype ‘2019-1-1′ provides 31.43 g of Zn per day for children and 22.86 g for adults. The roots of local cultivar Purple-purple can be used as functional food ingredients.

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Development and screening of Fusarium wilt resistant lines in Sweet potato [Ipomoea batatas (L.) Lam]

Laurie

2022

Euphytica

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Agronomic performance of new cream to yellow-orange sweetpotato cultivars in diverse environments across South Africa

Cited by 7 publications

References 21 publications

Analysis of the Nutritional Composition and Drought Tolerance Traits of Sweet Potato: Selection Criteria for Breeding Lines

Analysis of the Nutritional Composition and Drought Tolerance Traits of Sweet Potato: Selection Criteria for Breeding Lines

Phytonutritional Composition and Antioxidant Properties of Southern African, Purple-Fleshed Sweet Potato (Ipomoea batatas (L.) Lam.) Storage Roots

Development and screening of Fusarium wilt resistant lines in Sweet potato [Ipomoea batatas (L.) Lam]

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