Preference for Color, Sweetness, and Mouthfeel of Sweet Potato in Puerto Rico

1969 ◽  
Vol 69 (1) ◽  
pp. 99-106
Author(s):  
F. W. Martin ◽  
E. J. Rodríguez-Sosa

The color, softness, mouthfeel, and sweetness of six different sweet potato cultivars were rated by a trained panel. These sweet potatoes were then served to 52 untrained panelists who rated them for flavor and appearance. Panelists also expressed attitudes about their preference regarding color, sweetness, flavor, and mouthfeel. Preference ranking for flavor was closely related to sweetness, and for appearance to orange color. There were differences in preference according to cultural affiliation and sex. Attitudes of panelists were not related to their choice of sweet potatoes except in the case of color. There appear to be two poles of preference, one for the orange, sweet, moist, and the other for the light, less sweet, dry type of sweet potato.

1969 ◽  
Vol 72 (3) ◽  
pp. 437-444
Author(s):  
Franklin W. Martin

Four clones of sweet potato were planted monthly in 1984, and 11 morphological and growth characteristics were measured. Clones differed with respect to all characteristics, and significant differences were found among months in all but one characteristic. The 11 characteristics could be classified as modal, bimodal, irregular or complex with respect to monthly distribution. Several of the characteristics regressed on months by linear, quadratic or cubic regression. Others were not clearly related and differences are believed to be caused by cultural factors that may have varied. Four external variables affecting sweet potatoes, (day length, rainfall, temperature and solar radiation) could have accounted for many of the observed differences among months.


1985 ◽  
Vol 20 (3) ◽  
pp. 345-350 ◽  
Author(s):  
Michael A. Mullen ◽  
Alfred Jones ◽  
Donald R. Paterson ◽  
Thurman E. Boswell

Fourteen sweet potato [Ipomoea batatas (L.) Lam] cultivars and varieties were examined for resistance to the sweetpotato weevil [Cylas formicarius elegantulus (Summers)] in artificially infested fields in Yoakum, TX. One cultivar W-226, appeared to have a greater level of resistance than the other cultivars examined. The data are compared to earlier resistance trials to show that the germplasm presently available has greater levels of resistance than that in previous years. The resistance levels of “Resisto” and “Regal” for the past 4 years are discussed.


2018 ◽  
Vol 7 (5) ◽  
pp. 36 ◽  
Author(s):  
Gisele Koua ◽  
Thierry Zoue ◽  
Rose-Monde Megnanou ◽  
Sebastien Niamke

Sweet potato is an important food security crop in Sub-Saharan Africa. In Côte d’Ivoire, the roots are widely consumed as supplementary staple food or secondary food. The present study is conducted to highlight the nutritive composition, antinutrients and β-carotene contents of local sweet potatoes consumed in Côte d’Ivoire. The nutritive properties and antinutritive factors of these sweet potatoes were investigated using standard methods. Results confirmed the energetic value (363±1.63-374.08±0.56 kcal/100 g DM) of whole sweet potato flour, mainly due to its high carbohydrate content (86.75±0.40%-90.87±0.12%). Whole flour recorded low contents of moisture (4.50±0.10-6.30±0.15%), lipids (0.63±0.08-1.94±0.95%) and proteins (0.94±0.36-1.91±0.15%). The antinutritive factors ranged from 55.84±0.13 to 70.52±0.07 mg/100 g DM and 52.30±5.81-92.44±11.10 mg/100 g DM for oxalates and phytates, respectively. The mineral contents were: magnesium (49.37±1.09-540.87±0.82 mg/100 g DM), calcium (50.28±1.14-110.53±0.79 mg/100 g DM), phosphorus (25.12±1.04-42.75±0.82 mg/100 g DM), potassium (906.25±0.33-1625±0.61 mg/100 g DM), and iron (5.62±0.84-26.89±0.76 mg/100 g DM). The sweet potato flours highlighted polyphenols and antioxidant activity varying from 92.80±98.20±1.72 to 224.46±0.86 mg GAE /100 g DM, and 31.03±0.52-58.63±0.60%, respectively. While β-carotene levels of flours varied from 0.19±0.08 to 22.71±0.67 µg/g DM for white to orange cultivars. At the whole, the orange fleshed sweet potato cultivars recorded an appreciable amount of minerals (magnesium, iron and calcium), polyphenols and greater antioxidant activity. This indicates that these sweet potato cultivars may present a potential asset for their using as natural antioxidants to prevent chronic diseases and undernourishment caused mineral deficiency. The results also showed that the orange-fleshed varieties may contribute for vitamin A deficiencies alleviation in children of rural areas of Côte d’Ivoire.


2019 ◽  
Vol 40 (3) ◽  
pp. 1127 ◽  
Author(s):  
Ana Flávia de Oliveira ◽  
Jaqueline Machado Soares ◽  
Érica Caroline da Silva ◽  
Paulo Sergio Loubet Filho ◽  
Camila Jordão Candido ◽  
...  

The aim of the study was to evaluate the chemical, physical and nutritional composition and sensory acceptability of different sweet potato cultivars to classify the best genotypes for human consumption. We evaluated ten genotypes extracted from the Germplasm bank of Midwest State University, Brazil. The cultivars were evaluated regarding their sensory acceptability and chemical (reducing sugar; nonreducing sugar; total sugar; pH; total soluble solids; titratable acidity; total soluble solids/titratable acidity ratio; and instrumental colour) and nutritional composition (moisture; ash; protein; lipid; carbohydrate; energy value; total carotenoid; and ascorbic acid). Greater scores (p < 0.05) for overall acceptance were obtained for the white pulp genotypes Amorano, Júlia, UGA 45, and UGA 49. There was a statistical difference (p < 0.05) in the chemical and nutritional composition of sweet potatoes, except for the pH values. Generally, tuber have a light colour (values of L* greater than 50) with a yellow shade (b*) and green subshade (negative a* values). The exception was noticed in the UGA 34 genotype, which presented a higher red shade (positive a* value) and a yellow subshade. The cultivars more indicated for human consumption were the UGA 34 (favorable nutritional profile), UGA 45 (better acceptability and favorable chemical and nutritional composition), and Amorano (better acceptability and favorable chemical composition). On the other hand, the UGA 29 genotype may be characterized as the less appropriated for consumption. That, due to its less acceptance from the consumers and an inferior chemical and nutritional characterization. We conclude that the Brazilian sweet potato cultivars more indicated for human consumption are the UGA 34, UGA 45 and Amorano, considering that present more favorable chemical, nutritional and sensory acceptability characteristics. The UGA 29 genotype may be characterized as less recommended for consumption.


2018 ◽  
Vol 10 (1) ◽  
pp. 131-137 ◽  
Author(s):  
Siti Samiyarsih ◽  
Juwarno Juwarno ◽  
Juni Safitri Muljowati

Anatomical characters can be used as instructions to the structural resistance of plants to pathogen attack. Various pathogens attack sweet potato plants, such as the Sphaceloma batatas fungus that causes scurvy disease (scab). The aims of this research t test the structural resistance of sweet potato plants based on leaf anatomical character and intensity of disease attack due to the inoculated of S. batatas. The research was conducted from June to November 2016, using the Completely Randomized Design Experimental (RAL) method with a factorial pattern. The first factor was ten sweet potato cultivars and the second factor was the inoculum of S. batatas fungus each treatment with five replications. The character of leaf anatomy observed was thick of cuticle, thick of mesophyll, size and number of stomata and number of trichomes per 1 mm2 leaf area. Based on the research result, it was concluded that the inoculation of the fungus of S. batatas caused the decrease of stomata length and width on ten sweet potato cultivars. The highest intensity of disease attack was 14.33% and correlated with stomata length (r = 0.49). The anatomical structural resistance to scurvy can be used as a basis for determining crosses for obtaining superior sweet potato cultivars. The benefit of the research is to advise the community to cultivate sweet potatoes that have structural resistance to scurvy, such as cuticle and thick mesophyll, high trichomata density.


2020 ◽  
Vol 9 (1) ◽  
pp. e55911594
Author(s):  
Jaqueline Machado Soares ◽  
Camila Nogueira Espínola ◽  
Mirelly Marques Romeiro Santos ◽  
Valter Aragão do Nascimento ◽  
Daniel Araujo Gonçalves ◽  
...  

The objective of the study was to characterize the mineral profile of Brazilian sweet potatoes and to evaluate the influence of cooking by immersion in water on these micronutrients. The cultivars Amorano, Júlia, Valentina, UGA 29, UGA 34, UGA 45, UGA 49, UGA 79, UGA 80 and UGA 81 were investigated. The levels of sodium, potassium, calcium, magnesium, phosphorus, iron, zinc, copper and silicon were quantified in the samples of raw and cooked sweet potatoes, which presented statistical difference between the varieties. The genotypes that stood out were Júlia and UGA 45 with higher mineral contents, while Amorano and UGA 29 were characterized by lower contents. Water immersion cooking reduced sodium, potassium and iron contents for all Brazilian sweet potato cultivars, while Zn, Mn and Cu showed the least changes. It is concluded that cooking in water significantly reduces the mineral content of most Brazilian sweet potato cultivars.


10.5219/1036 ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 131-137
Author(s):  
Miroslav Šlosár ◽  
Alžbeta Hegedűsová ◽  
Ondrej Hegedűs ◽  
Ivana Mezeyová ◽  
Ján Farkaš ◽  
...  

The sweet potato (Ipomoea batatas L.) is relatively known vegetable species, but it is grown only on small area in the Middle European region. Its cultivars are characterized by different colour of tuber flesh which can be white, beige, yellow, orange and purple. The aim of this study was to determine and compare selected qualitative parameters of tubers (total carotenoids, vitamin C and total soluble solids) among orange, white and purple sweet potato cultivars. The field experiments were established at Slovak University of Agriculture in Nitra in 2016 and 2017. Sweet potatoes were grown by hillock system with using of black non-woven textile for soil mulching. The tuber harvest was realised on the 6th October 2016 and 13rd September 2017. The highest content of total carotenoids was found in orange sweet potato cultivars (78.47 - 122.89 mg.kg-1 fresh weight) and its values were multiple-fold higher in comparison with purple (4.22 mg.kg-1 f. w.) and white (10.71 mg.kg-1 f. w.) cultivars. Orange cultivars were also richer source of vitamin C (246.31 - 325.99 mg.kg-1 f. w.) compared to white (179.66 mg.kg-1 f. w.) and purple (187.75 mg.kg-1 f. w.) cultivars of sweet potatoes. The total soluble solids, expressing mainly sugar content, was higher in purple (10.13 °BRIX) cultivar of sweet potatoes, followed by cultivars with orange (8.52 - 9.72 °BRIX) and white (5.57 °BRIX) tuber flesh. Obtained results showed the significant effect of cultivar, characterized by different tuber flesh colour, on the composition and contribution of sweet potatoes for human health. 


Nativa ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 286-293
Author(s):  
Marciel Redin ◽  
Scheila Andrieli Silveira Bones ◽  
Jackson Eduardo Schmitt Stein ◽  
Eduardo Canepelle ◽  
Andersson Daniel Steffler ◽  
...  

O objetivo foi avaliar o crescimento das plantas, produção de raízes de batata-doce (Ipomoea batatas) e grãos de milho pipoca (Zea mays) em sistema de cultivo solteiro e consorciado. Foram avaliadas quatro cultivares de batata-doce e uma de pipoca em blocos casualizados com três repetições em condições de campo. No cultivo solteiro, a pipoca e batata-doce foram espaçadas 75 cm entre linhas. No consorciado, o plantio da batata-doce foi no centro das entre linhas da pipoca. A adubação foi realizada com cama de frango. Aos 30, 60 e 90 dias foi avaliado o número de folhas, altura das plantas, diâmetro do colmo/baraços e comprimento de baraços. No florescimento foi determinada a matéria seca das plantas, na maturação fisiológica a produção de grãos da pipoca e aos 180, as raízes da batata-doce. Observou-se que a pipoca apresentou a maior produção de matéria seca, número de folhas, diâmetro de colmos e altura de plantas quando solteiro, as cultivares de batata-doce quando consorciadas menor produção de matéria seca e raízes, a produção de grãos de pipoca não apresentou diferença entres os sistemas de produção. O sistema consorciado de pipoca e batata-doce promove maior produção de matéria seca e produção de alimentos por área. Palavras-chave: policultivos; sustentabilidade; agricultura familiar; Ipomoea batatas; Zea mays.   Intercropped cultivation of sweet potatoes and popcorn: growth and production of crops   ABSTRACT: The objective was to evaluate plant growth, sweet potato productivity (Ipomoea batatas) and grains of popcorn (Zea mays) in single and intercropped systems. Four sweet potato cultivars and one popcorn in randomized blocks were evaluated with three replications in field conditions. In single cultivation, popcorn and sweet potatoes were spaced 75 cm between rows. In the intercropped, the sweet potato was in the center of between the lines of popcorn. Fertilization was carried out with chicken manure. At 30, 60 and 90 days, the number of leaves, plant height, stem/tiller diameter and tether length were evaluated. At flowering, the dry matter of the plants was determined, at physiological maturity the grain yield of the popcorn and at 180, the roots of the sweet potato. It was observed that the popcorn showed the highest production of dry matter, number of leaves, stem diameter and plant height when single, sweet potato cultivars when intercropped, lower production of dry matter and roots, the productivity of popcorn grains there was no difference between the production systems. The intercroped system of popcorn and sweet potatoes promotes greater production of dry matter and food productivity per area. Keywords: polyculture; sustainability; family farming; Ipomoea batatas; Zea mays.


Author(s):  
P. M. Kirk

Abstract A description is provided for Phaeoisariopsis bataticola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot of sweet potatoes. HOSTS: Ipomoea spp. (Sweet potato) (Convolvulaceae). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: USA (Florida); CENTRAL AMERICA: Cuba, Dominican Republic, Puerto Rico; SOUTH AMERICA: Venezuela. TRANSMISSION: Presumably by air-borne conidia.


2020 ◽  
pp. 18-20
Author(s):  
Т.Э. Остонакулов ◽  
А.А. Шамсиев

В 2017–2019 годах изучены сортообразцы сладкого картофеля на староорошаемых лугово-сероземных почвах Зарафшанской долины. Цель исследований – комплексная оценка сортообразцов батата в условиях Зарафшанской долины по скороспелости, росту, развитию, интенсивному размножению, формированию урожая, компактности клубней в гнезде, продуктивности, урожайности и лежкости клубней и выделение из них перспективных, а также разработка приемов агротехнологии получения высоких урожаев для данных условий. Почвы опытного участка характеризуются благоприятными агрофизическими и водными свойствами и низким содержанием гумуса, нитратного азота, подвижного фосфора и содержанием обменного калия от низкого до среднего. Сравнивали 18 сортообразцов батата. Выделенные сортообразцы изучали при ширине междурядий 70 и 90 см со схемой 70×25 и 90×20 см по 1, 2 и 3 растения в гнезде. Для получения рассады сортообразцов батата брали по 40 клубней и высаживали 20–22 февраля в пленочной теплице при температуре 15–18 °C, заделывая их на глубину 3–5 см. Влажность почвы поддерживали на уровне 65–70%. Через 7–10 дней после высадки почки начинают прорастать, а через 43–48 дней формируется рассада высотой 12–15 см, готовая для высадки в поле. Высадка рассады, как и других рассадных культур (томата, перца, баклажана) – по схеме 70×20–25 см во второй-третьей декаде апреля. Уход включал в себя междурядную обработку (культивация), прополку, борьбу с сорняками, подкормку, поливы. Уборка урожая – в конце сентября-начале октября с помощью картофелекопателя. В результате исследований выделились сорта по скороспелости, дружности формирования ростков, ускоренному размножению, продуктивности, компактности клубней в гнезде и с высоким товарным урожаем – Сочакинур, Хар-Бей и Япон. Возделывание этих сортообразцов по схеме 70×25 и 90×20 см способствует получению товарного урожая высокого качества не менее 43–48 т/га. In 2017–2019, studies were conducted on the study of varieties of sweet potatoes on old-irrigated meadow-gray-earth soils of the Zarafshan valley. The purpose of the research is a comprehensive assessment of sweet potato varieties in the conditions of the Zarafshan valley in terms of early maturity, growth, development, intensive reproduction, yield formation, compactness of tubers in the nest, productivity, yield and keeping quality of tubers and the selection of promising ones, as well as the development of methods of agricultural technology for obtaining high yields for given conditions. The soil is characterized by favorable agrophysical and water properties and low content of humus, nitrate nitrogen, mobile phosphorus and a low-average content of exchange potassium. Eighteen sweet potato varieties were compared. The selected variety samples were studied with a row spacing of 70 and 90 cm with a scheme of 70×25 and 90×20 cm for 1, 2 and 3 seedlings in the nest. To obtain seedlings of sweet potato varieties, 40 tubers were taken and planted on February 20–22 in a film greenhouse at a temperature of 15–18 °C, seeding to a depth of 3–5 cm, the soil moisture was maintained at 65–70%. 7–10 days after planting, the buds began to germinate, and after 43–48 days, seedlings were formed with a height of 12–15 cm, which is ready for planting in the field. Planting seedlings in the field is carried out, as well as other seedlings (tomato, pepper, eggplant) according to the scheme 70x20–25 cm in the second or third decade of April. Growing includes inter-row processing (cultivation), weeding, weed control, top dressing, watering. Harvesting in late September, early October with a potato digger. As a result of the research, varieties were identified in terms of early maturity, sprout formation, accelerated reproduction, productivity, compactness of tubers in the nest and ensuring a high marketable yield – Sochakinur, Xar-Bey, and Japon. The cultivation of these varieties according to the scheme 70×25 and 90×20 cm contributes to the production of a commodity crop at 43–48 t/ha with good qualities.


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