Sweet potato cultivars grown and harvested at different times in semiarid Brazil

Albuquerque, José Ricardo Tavares de; Ribeiro, Rayanne Maria Paula; Pereira, L. A. F.; Barros, Aurelio Paes; Silveira, Lindomar María da; Santos, Manoel Galdino dos; Souza, Almir Rogerio Evangelista de; Lins, Hamurábi Anízio; Neto, Francisco Bezerra

doi:10.5897/ajar2016.11761

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…Interestingly, on a macroregion level, the highest prevalence and consumption for sweet potato and potato were observed amongst consumers living in the Northeast and South and the South and Southeast, respectively. The South and Northeast macroregions are the largest sweet potato producers [ 5 ], whereby potato production is concentrated in the South and Southeast [ 9 , 10 ]. The highest intake of mandioca was observed in the North.…”

Section: Discussionmentioning

confidence: 99%

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Impact of sociodemographic factors on the consumption of tubers in Brazil

Horodyska

Pigat

Wonik

et al. 2021

Nutr J

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Background Although tubers play a significant role in Brazilian agriculture, very little is known about the intake of tubers among the Brazilian population. The objective of this study was to characterize the intake of tubers across Brazil. The types of tubers consumed were quantified, and the impact of geographic and sociodemographic factors was assessed. Methods This cross-sectional study is based on dietary intake data of 33,504 subjects obtained from the Brazilian National Dietary Survey. All tuber containing foods were identified, and the contribution of different tubers to overall tuber consumption in Brazil was quantified. Descriptive analyses assessed the impact of macroregion and sociodemographic characteristics on tuber consumption, and differences in intake were assessed using statistical tests. Lastly, the dietary intakes of tuber consumers and non-consumers were compared after adjusting for energy and covariates to determine if there were any major differences in dietary intakes between the two groups. Results Fifty-five percent of the Brazilian population consumed tubers, which differed by macroregion. The intake of tubers among consumers also differed between macroregions. Overall, rural areas reported significantly higher mean daily intakes of tubers (122 g/day) among tuber consumers than urban areas (95 g/day). Mandioca and potato were the most commonly consumed tubers (59 and 43% prevalence, respectively, on any of the 2 days), while the highest daily intakes amongst tuber consumers across Brazil were noted for sweet potato (156 g/day) and potato (95 g/day). On a macroregion level, among tuber consumers, mandioca had the highest prevalence of consumption in the North (94%), Northeast (83%), and Central-West (68%), while consumption of potatoes was most prevalent in the Southeast (63%) and South (62%). Compared to women, small but significantly higher tuber intakes were noted for males (108 vs. 85 g/day). There were no significant differences in intakes among income quintiles. After adjusting for energy and other covariates, nutrient intakes between tuber and non-tuber consumers were not meaningfully different, with the exception of sodium (+ 6.0% comparing non-tuber to tuber consumers), iron (+ 6.1%), zinc (+ 5.7%), vitamin C (+ 8.3%), riboflavin (+ 9.0%), and folate (+ 7.9%). Conclusions Tuber consumption is influenced by regional and sociodemographic characteristics of the Brazilian population. When looking at energy-adjusted nutrient intakes, diets of tuber consumers have resulted in somewhat lower intakes of some micronutrients, namely riboflavin, folate, vitamin C, iron, sodium, and zinc.

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Section: Discussionmentioning

confidence: 99%

“…Although Brazil has been a large vegetable producer, with 40% of the production being roots and tubers, very little is known about the intake of tubers among the Brazilian population [ 4 , 5 ]. The objective of this study was to characterize tuber consumption across all macroregions of Brazil.…”

Section: Introductionmentioning

confidence: 99%

Impact of sociodemographic factors on the consumption of tubers in Brazil

Horodyska

Pigat

Wonik

et al. 2021

Nutr J

View full text Add to dashboard Cite

show abstract

“…Interestingly, on a macroregion level, the highest prevalence and consumption for sweet potato and potato were observed amongst consumers living in the Northeast and South and the South and Southeast, respectively. The South and Northeast macroregions are the largest sweet potato producers [12], whereby potato production is concentrated in the South and Southeast [13,14]. The highest intake of mandioca was observed in the North.…”

Section: Tuber Consumption Across Brazilian Macroregionsmentioning

confidence: 99%

Impact of Sociodemographic Factors on The Consumption of Tubers in Brazil

Horodyska

Pigat

Wonik

et al. 2021

Preprint

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BackgroundAlthough tubers play a significant role in Brazilian agriculture, very little is known about the intake of tubers among the Brazilian population. The objective of this study was to characterize the intake of tubers across Brazil. The types of tubers consumed were quantified, and the impact of geographic and sociodemographic factors was assessed. MethodsThis cross-sectional study is based on dietary intake data of 33,504 subjects obtained from the Brazilian National Dietary Survey. All tuber containing foods were identified, and the contribution of different tubers to overall tuber consumption in Brazil was quantified. Descriptive analyses assessed the impact of macroregion and sociodemographic characteristics on tuber consumption, and differences in intake were assessed using statistical tests. Lastly, the dietary intakes of tuber consumers and non-consumers were compared after adjusting for energy and covariates to determine if there were any major differences in dietary intakes between the two groups. ResultsFifty-five percent of the Brazilian population consumed tubers, which differed by macroregion. The intake of tubers among consumers also differed between macroregions. Overall, rural areas reported significantly higher mean daily intakes of tubers (127 g/day) among tuber consumers than urban areas (96 g/day). Mandioca and potato were the most commonly consumed tubers (59 and 43% prevalence, respectively, on any of the two days), while the highest daily intakes amongst tuber consumers across Brazil were noted for sweet potato (156 g/day) and potato (95 g/day). On a macroregion level, among tuber consumers, mandioca had the highest prevalence of consumption in the North (94%), Northeast (83%), and Central-West (68%), while consumption of potatoes was most prevalent in the Southeast (63%) and South (62%). Compared to women, small but significantly higher tuber intakes were noted for males (108 vs. 85 g/day). Amongst tuber consumers, children aged 10 to 12 consumed fewer tubers than the individuals aged 19 onwards. The highest mean daily intakes were noted amongst tuber consumers in the first income quintile (low earners) and lowest in the fifth quintile (high earners) (P<0.001). After adjusting for energy and other covariates, nutrient intakes between tuber and non-tuber consumers were not meaningfully different, with the exception of sodium (+6.0% comparing non-tuber to tuber consumers), iron (+6.1%), zinc (+5.7%), vitamin C (+8.3%), riboflavin (+9.0%), and folate (+7.9%).ConclusionsTuber consumption is influenced by regional and sociodemographic characteristics of the Brazilian population. When looking at energy-adjusted nutrient intakes, diets of tuber consumers have resulted in somewhat lower intakes of some micronutrients, namely riboflavin, folate, vitamin C, iron, sodium, and zinc

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Nitrogen Fixing and Phosphate Mineralizing Bacterial Communities in Sweet Potato Rhizosphere Show a Genotype-Dependent Distribution

et al. 2019

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We hypothesize that sweet potato genotypes can influence the bacterial communities related to phosphate mineralization and nitrogen fixation in the rhizosphere. Tuberous roots of field-grown sweet potato from genotypes IPB-149, IPB-052, and IPB-137 were sampled three and six months after planting. The total community DNA was extracted from the rhizosphere and analyzed by Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis (PCR-DGGE) and quantitative real-time PCR (qPCR), based on the alkaline phosphatase coding gene (alp gene) and on the nitrogenase coding gene (nifH gene). The cluster analysis based on DGGE showed that plant age slightly influenced the bacterial community related to phosphate mineralization in the rhizosphere of IPB-137, although it did not affect the bacterial community related to nitrogen fixation. The statistical analysis of DGGE fingerprints (Permutation test, p ≤ 0.05) showed that nitrogen-fixing bacterial community of IPB-052 statistically differed from genotypes IPB-149 and IPB-137 after six months of planting. The bacterial community of IPB-137 rhizosphere analyzed by alp gene also showed significant differences when compared to IPB-149 in both sampling times (p ≤ 0.05). In addition, alp gene copy numbers significantly increased in abundance in the rhizosphere of IPB-137 after six months of planting. Therefore, plant genotype should be considered in the biofertilization of sweet potato.

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Sweet potato cultivars grown and harvested at different times in semiarid Brazil

Cited by 4 publications

References 12 publications

Impact of sociodemographic factors on the consumption of tubers in Brazil

Impact of sociodemographic factors on the consumption of tubers in Brazil

Impact of Sociodemographic Factors on The Consumption of Tubers in Brazil

Nitrogen Fixing and Phosphate Mineralizing Bacterial Communities in Sweet Potato Rhizosphere Show a Genotype-Dependent Distribution

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