Cultivar variation in keeping quality of sweetpotatoes

Rees, D.; Oirschot, Q.E.A. van; Amour, R.; Rwiza, E.; Kapinga, R.; Carey, T.

doi:10.1016/s0925-5214(02)00180-1

Cited by 40 publications

(51 citation statements)

References 4 publications

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“…In this present study, the dry matter content of Nane (27%) was significantly (p < 0.001) higher than Apomuden (19%), and both cultivars also had good wound healing abilities. Our findings disagree with those of Rees et al (2003), possibly due to different environmental and soil conditions as well as genotypes. However, the findings are valuable since high dry matter content (related to preferred culinary quality (Rukundo et al 2013) and good wound healing score are desirable qualities in sweetpotato.…”

Section: Wound Healing Scorecontrasting

confidence: 99%

Wound healing and dry matter content of orange-fleshed sweetpotato cultivars as influenced by curing methods

Atuna

Carey²,

Low

et al. 2017

Open Agriculture

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Section: Wound Healing Scorecontrasting

confidence: 99%

Wound healing and dry matter content of orange-fleshed sweetpotato cultivars as influenced by curing methods

Atuna

Carey²,

Low

et al. 2017

Open Agriculture

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“…and DM may explain previous results that we have obtained in which we observed that high dry matter cultivars in Tanzania tend to have a shorter shelf-life (Rees et al, 2002).…”

Section: LI and Root Dry Matter Contentsupporting

confidence: 77%

“…We have previously postulated that water loss is the main cause of deterioration for roots during marketing in the tropics (Rees et al, 2002). This suggests that the L.I.…”

Section: Lignification Index and Storability (Weight Loss)mentioning

confidence: 99%

“…In storage trials carried out under simulated marketing conditions in Tanzania, it was found that rates of root weight loss and rotting both varied considerably among cultivars. Weight loss ranged from 8% to 30% over two weeks in one trial (T= 24.2 1.4 C, RH= 56.1 5.7%) (Rees et al, 2002). There was an association between cultivar root water loss and rotting, and it was suggested that under marketing conditions rotting is controlled primarily by desiccation.…”

mentioning

confidence: 95%

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Sweetpotato cultivars differ in efficiency of wound healing

Oirschot¹,

Rees²,

Aked³

et al. 2006

Postharvest Biology and Technology

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This paper presents a study on the wound healing processes in sweetpotatoes (Ipomoea batatas Lam.) when exposed to tropical conditions typical for marketing (RH 50% to 73%, T 25ºC to 30ºC). The physiological processes during healing are revisited. Under sub-optimal humidities (65% 10) the depth of the lignified layer i.e. the thickness of the desiccated cell layers is affected by both cultivar and humidity. Some cultivars consistently failed to produce a lignified layer and for others the layer is often not continuous. The continuity of the lignified layer is more

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“…Sweetpotato quality attributes in East Africa were described by Rees et al (2003) and the areas where breeding initiatives should be emphasized were highlighted. Rees et al (2003) ranked viruses and weevils as most important, followed by yield, earliness in maturity, starch and dry matter content, sweetness (taste), fiber content, level of flesh oxidation, root shape, skin and lastly flesh colour.…”

Section: Introductionmentioning

confidence: 99%

Genetic variability for tuber yield, quality, and virus disease complex traits in Uganda sweetpotato germplasm

Gasura¹,

Mashingaidze²,

Mukasa³

2010

African Crop Science Journal

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Sweetpotato (Ipomoea batatas) is an important root crop in Uganda, where yield potential and quality attributes have not been fully exploited due to limited breeding efforts and poor knowledge on the inheritance of some of its agronomic traits. A study was carried out at Makerere University to phenotypically characterise selected sweetpotato cultivars with special reference to sweet potato virus disease (SPVD) resistance, growth habit, flowering and seed set ability, tuber yield and shape, tuber skin and flesh colour, dry matter, starch, sugar and β-carotene content. Twenty cultivars were selected for use in the assessment of their breeding potential and for improvement of yield and quality attributes. Cultivar Munyeera displayed the highest level of SPVD resistance followed by New Kawogo and Polyster as exhibited by relative area under disease progress curves following natural field infection and graft inoculation with SPVD causing viruses, Sweet potato chlorotic stunt virus and Sweet potato feathery mottle virus. Flowering ability was low in some cultivars and a few did not flower at all. Some cultivars e.g. Munyeera, New Kawogo, Silk and Sowola which showed high flowering ability failed to fertilise and set seed when crossed to specific cultivars. Preliminary genetic analysis for yield and quality following crossing elite 7 female and 6 male cultivars in a North Carolina 2 mating design showed wide genetic variability in the F 1 s for the important traits, and heterosis was observed for some traits such as tuber size and number of tubers per plant. Up to five genes may be involved in β-carotene synthesis and probably in combination with other genes in different genetic backgrounds that can modify flesh colour from white to purple. The results demonstrate the possibility to improve sweetpotato for yield and quality using the available germplasm.

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Cultivar variation in keeping quality of sweetpotatoes

Cited by 40 publications

References 4 publications

Wound healing and dry matter content of orange-fleshed sweetpotato cultivars as influenced by curing methods

Wound healing and dry matter content of orange-fleshed sweetpotato cultivars as influenced by curing methods

Sweetpotato cultivars differ in efficiency of wound healing

Genetic variability for tuber yield, quality, and virus disease complex traits in Uganda sweetpotato germplasm

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