Identification of quantitative trait loci for dry-matter, starch, and β-carotene content in sweetpotato

Cervantes-Flores, J.C.; Sosinski, Bryon; Pecota, Kenneth V.; Mwanga, R.O.M.; Catignani, George L.; Trương, Bá Vương; Watkins, Ruth H.; Ulmer, M. R.; Yencho, G. Craig

doi:10.1007/s11032-010-9474-5

Cited by 104 publications

(92 citation statements)

References 27 publications

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“…This negative correlation may be associated with the fact that both, beta carotene and root dry matter contents are synthesized inside plastids, chromoplast and amyloplast, respectively. Therefore it is possible that chromoplast and amyloplast may be competing for the same organelles as reported by Cervantes-Flores et al (2011). In addition, beta carotene content was negatively correlated with fresh root yield (Table 10) indicating that selection of genotypes for high beta carotene content would result in lower fresh root yield because of their negative association between them.…”

Section: Phenotypic Correlation Between the Traits Studiedmentioning

confidence: 83%

The Inheritance of Yield Components and Beta Carotene Content in Sweet Potato

Mbusa¹,

Ngugi²,

Olubayo³

et al. 2018

JAS

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Analysis of the gene action exhibited by an agronomic trait in crop plants is useful in the planning of an effective plant breeding program. This study sought to establish the inheritance variance of root yield components and beta carotene content present in sweet potato clones commonly grown in Kenya. Ten contrasting parents were selected based on their beta carotene content, dry matter content and yield potential. They were planted in pots in the green house at KEPHIS-Muguga, Kenya, where they were grafted into Ipomoea setosa to boost their ability to flower. Five parents were further selected based on their ability to flower under local environmental conditions and crossed in a 5 × 5 half diallel manner. Five parents and ten F 1 clones arising from this hybridization were evaluated at KALRO-Kiboko, Kenya during two rainy seasons. The field trials were laid out in a randomized complete block design of three replications. The data were scored for root yield characteristics, beta carotene and root dry matter content. Griffing Method II, Model 1 diallel was used to estimate the general and specific combining ability. Genetic variability for beta carotene and root dry matter content indicated that the two traits were controlled mostly by both additive and dominant gene actions. Heterosis gene effects were found for beta carotene and root dry matter content which would be useful in the improvement of sweet potato productivity.

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Section: Phenotypic Correlation Between the Traits Studiedmentioning

confidence: 83%

The Inheritance of Yield Components and Beta Carotene Content in Sweet Potato

Mbusa¹,

Ngugi²,

Olubayo³

et al. 2018

JAS

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“…However, G8 and G15 had low RDMC. This is one of the major challenges when breeding to improve the RDMC of the OFSPs due to the existence of negative correlations between the two traits (Simonne et al 1993;Chiona 2009;Cervantes-Flores et al 2010). It is suggested that the simultaneous improvement of the two traits is a challenge in sweetpotato breeding unless the linkage can be broken.…”

Section: Discussionmentioning

confidence: 99%

Genotype-by-environment interaction and stability of sweetpotato genotypes for root dry matter, β-carotene and fresh root yield

Gurmu¹,

Shimelis²,

Laing³

2017

Open Agriculture

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“…This antisense tuber-specific silencing of the gene results in significant increases in carotenoid levels, with up to 14-fold more β-carotene. Cervantes-Flores, et al [20] have also recently reported in sweet potato the identification of quantitative trait loci (QTL) for dry matter, starch content and β-carotene content, opening up the possibility of genetic manipulation and further enhancement of this root crop. Fruit-derived carotenoids might have greater health potential than root carotenoids because they have better bioavailability.…”

Section: Vitamins and Carotenoidsmentioning

confidence: 99%

Transgenic Vegetable Breeding for Nutritional Quality and Health Benefits

Dias¹,

Ortíz

2012

FNS

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Vegetables are essential for well-balanced diets. About 3 billion people in the world are malnourished due to imbalanced diets. Vegetables can contribute to the prevention of malnutrition disorders. Genetic engineering enables vegetable breeders to incorporate desired transgenes into elite cultivars, thereby improving their value considerably. It further offers unique opportunities for improving nutritional quality and bringing other health benefits. Many vegetable crops have been genetically modified to improve traits such as higher nutritional status or better flavour, and to reduce bitterness or anti-nutritional factors. Transgenic vegetables can be also used for vaccine delivery. Consumers could benefit further from eating more nutritious transgenic vegetables, e.g. an increase of crop carotenoids by metabolic sink manipulation through genetic engineering appears feasible in some vegetables. Genetically engineering carrots containing increase Ca levels may boost Ca uptake, thereby reducing the incidence of Ca deficiencies such as osteoporosis. Fortified transgenic lettuce with zinc will overcome the deficiency of this micronutrient that severely impairs organ function. Folates deficiency, which is regarded as a global health problem, can also be overcome with transgenic tomatoes with folate levels that provide a complete adult daily requirement. Transgenic lettuce with improved tocopherol and resveratrol composition may prevent coronary disease and arteriosclerosis and can contribute to cancer chemopreventative activity. Food safety and health benefits can also be enhanced through transgenic approaches, e.g. rural African resource-poor consumers will benefit eating cyanide-free cultivars of cassava. Biotechnology-derived vegetable crops will succeed if clear advantages and safety are demonstrated to both growers and consumers.

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Identification of quantitative trait loci for dry-matter, starch, and β-carotene content in sweetpotato

Cited by 104 publications

References 27 publications

The Inheritance of Yield Components and Beta Carotene Content in Sweet Potato

The Inheritance of Yield Components and Beta Carotene Content in Sweet Potato

Genotype-by-environment interaction and stability of sweetpotato genotypes for root dry matter, β-carotene and fresh root yield

Transgenic Vegetable Breeding for Nutritional Quality and Health Benefits

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