Martins effect of age of planting material onyields of sweet potato from cuttings, tropical root and tuber crops newsletter 15. Curing is a lowcost technique which has been explored to improve the postharvest quality of sweet potato. Hybrid cultivars of all vegetable crops are more likely to have genetic resistance to specific diseases. Although several sweetpotato varieties are maintained by national gene banks all. In the us, orangefleshed sweet potatoes are sometimes called yams, but this name is more properly applied to the true yam, various species in the genus dioscorea. Star leaf known generically as boniato, white delight, nancy hall, sumor, picadita, campeon. Roots are a light copper color with moist, reddishorange flesh. Regarding the moisture and lipid content of snacks, vacuumfried snacks showed about 50% lower values compared to atmosphericfried snacks, while for. This list of sweet potato cultivars provides some information about varieties and cultivars of. To identify novel characteristics of these different types of sweet potato, we analyzed nutrient composition and dietary fiber content, and quantified anthocyanins content of sweet potato samples. Comparative analysis of nutritional quality of five. The crop is sensitive to drought at tuber initiation stage 5060 days after planting. These three planted from slips will be ready for harvest in 80 to 90 days.
Collecting, evaluating, and selecting from the local germplasm. Compositional and shelflife indices of sweet potato are. Cultivars there are two broad categories of sweet potato. It was also grown before western exploration in polynesia thus the question about its origins, where it is known as the kumara. Its large, starchy, sweet tasting, tuberous roots are a root vegetable. Pdf physicochemical properties of twentyone caribbean. Odenigbo a, rahimi j, ngadi m, wees d, mustafa a, et al. Smallscale technology and practices for sweet potato growing. The more orange the flesh of a sweet potato root is, the more nutritious carotene it has.
The young leaves and shoots are sometimes eaten as greens. Sweet potato anthocyanins are watersoluble pigments with many physiological functions. Introduction 1 uses 1 composition 1 soil requirement 1 land preparation 2 planting material 2 planting 3 time of planting 3 varieties 3 fertilization 4 weed control 4 pest and diseases 4. Pathleen titus, cardi st vincent and the grenadines. Sweet potato has gained prominence due to its ability to adapt to wide production ecologies and yield response to minimal external inputs. The common english name for this crop is spelled sweet potato or sweetpotato. They cannot justify purchasing largescale equipment for small operations, but. Sweet potatoes university of the district of columbia. It ranks as the worlds seventh most important crop, with an estimated annual production of approximately 122 million metric tons fao, 2006. Canned sweet potatoes are much lower in betacarotene, vitamin c, and b vitamins than fresh ones.
Materials and methods samples five different cultivars of sweet potato were used for this study. Storage performance of taiwanese sweet potato cultivars. Sweet potato types growing different varieties of sweet. A vinetype variety, it is known for its great taste, making it an excellent baking and cooking potato. Mwanga and others published release of six sweetpotato cultivars naspot 1 to naspot 6 in uganda find, read and cite all the research you need on. Physicochemical properties of starches from malawian sweetpotato ipomoea batatas cultivars. Although it is relatively easy to grow sweet potatoes without chemi. Tuberosum type cvs tend to produce less than cvs with andigena genes. There are more than 6,000 different varieties of sweet potatoes worldwide, and growers in the united states can select from more than 100 different types.
Growth, yield, and quality of sweet potato ipomoea batatasl. Pdf growth, yield, and quality of sweet potato ipomoea batatas. The dryfleshed types have a mealier texture when cooked and arent as widely grown. Nancy hall 9983 3383 0 6600 vardeman 9048 3850 0 5198 bunch porto rican 1roots 3 to 9 inches in length and 1. Conversely, many openpollinated cultivars have stood the test of time in. Choose a location that is well drained and, if possible, protected from north winds. Pdf physicochemical properties of starches from malawian. Crops grown in heavy clay loams produce irregular shaped tubers. The sweet potato is commonly thought to be a type of potato. Physicochemical properties of twentyone caribbean sweet potato cultivars.
Haulm growth of sweet potato cultivars throughout the 2 growing periods in fianl. You should amend your soil with lots of rich organic matter and make sure that it is well drained. For maximum early plant production, growers may presprout sweet potato seed roots. Data for each location, cultivar, and year were analyzed in a. Apr 30, 2012 the effects of vacuum frying and atmospheric frying on the physicochemical properties and quality characteristics of the deepfatfried snacks were compared in manufacturing snacks using general, yellowfleshed, and purplefleshed sweet potatoes. For instance, a previous study examined sweet potato viromes in three different sweet potato cultivars in china by ngs, revealing a total of 15 different viruses infecting sweet potato 21.
Effect of cultivar on quality attributes of sweet potato. Several new sweet potato cultivars have been released in south africa from 2004 until 2011 with varietal traits suitable for the informal market. Shortseason sweet potato varieties include beauregard, centennial, and georgia jet. Sweet potatoes are the seventh most important food crop grown in around 111 countries horton 1988. Sweet potato belongs to convolvulaceae family with more than a hundred developing countries, known to cultivate sweet potato and are ranked the 5 th most essential foodstuff in over 50 of those countries and globally, 7 th amongst the entire food production, but has lesser experimental work than other staples such as potato solanum tuberosum and wheat triticum aestivum. In this study, we selected four sweet potato cultivars with different color flesh, purple, red, yellow and whitefleshed sweet potatoes. Comparative analysis of nutritional quality of five different. Sweet potato value chain analysis reveals opportunities for. It is also not tolerant to water logging which can cause tuber rot. Quality characteristics of vacuumfried snacks prepared from. Here, we conducted a comprehensive sweet potato virome study using 10 different libraries from eight regions in. Sweet potato ipomea batatas the sweet potato is a warmseason vegetable of tropical origin and is one of the most nutritious vegetables that can be grown in the garden. The pit for the bed may be dug 6 inches deep and as long as desired. The sweet potato probably originated in the tropical parts of south america and was domesticated there at least 5000 years ago.
People grow sweet potato in many parts of the world, including new zealand, australia, the philippines, japan, hawaii, china. It is a good source of sugars, carbohydrates, calcium, iron, and other minerals and vitamins, particularly a and c. Specifically, the chapter describes the role of the sweet potato in human diets. The most common type of sweet potato found in us markets is the moist. Total yield ranged from 6,628 bunch porto rican to. The sweet potato in the family convolvulaceae is a dicotyledonous perennial plant. Moisture content of the fresh tuber and flour of the sweet potato cultivars was determined according to the method of aacc 16. This list of sweet potato cultivars provides some information about varieties and cultivars of sweet potato ipomoea batatas. Sweet potatoes arent finicky about the texture of the ground they grow in, but if your soil is full of rocks and clumps, you may end up with oddly shaped potatoes at the end of the season.
List of sweet potato cultivars wikipedia republished. Conversely, many openpollinated cultivars have stood the. Place 5 or 6 inches of sand in the bottom of the pit. Smallscale technology and practices for sweet potato growing in southeast oklahoma 1 introduction market gardeners are often caught in a technological doughnut hole. The orange and redfleshed varieties are rich sources of betacarotene, which is the precursor to vitamin a. Cultivars in the southeastern anatolian and east mediterranean regions of turkey. Orangefleshed cultivars in particular have immense potential to improve household income and nutrition in subsaharan africa. Pdf quality changes in different cultivars of sweet potato. Sweet potatoes gained some popularity as a lowercarb potato in the early 2000s.
Yield performance of organic sweetpotato varieties in. Nemagold, centennial, southern delite, hernandez, regal, bush, travis, excel, vardaman. May 28, 20 percentage pancreatic digestibility of flours from different cultivars of sweet potatoes. Of the nontraditional varieties, the japanese white was the handsdown winner, praised for its heavy chestnut flavor and velvety texture. Yield of 10 sweet potato cultivars in pounds per acre at the southwest michigan research and extension center, benton harbor, michigan in 2008. The sweet potato ipomoea batatas was domesticated in central and. Warming for two to four weeks at temperatures from 75 degrees f to 85 degrees f, with a relative humidity of 90 percent and adequate ventilation, is optimal. Skin color of sweet potato types vary widely from creamy white to rosy.
Moisture content of the fresh tuber and flour of the sweet potato cultivars was determined according to the method of. Some creamcolored or whiteflesh sweet potato varieties include. The jewel placed second with its robust sweet potato flavor, though some found the flavor weird and sour. Importing cultivars that have been bred in other parts of the world and evaluating them under your conditions. People grow sweet potato in many parts of the world, including new zealand, australia, the philippines, japan, hawaii, china, and north america. The sweet potato or sweetpotato ipomoea batatas is a dicotyledonous plant that belongs to the bindweed or morning glory family, convolvulaceae. Sweet potato plants are often produced in open beds. Sweet potato was first domesticated in the americas more than 5,000 years ago. However, the sweet potato value chain spvc is not welldeveloped in many producing countries. This paper reports on results of onfarm trials conducted to evaluate the cultivars in broader agroecologies in the country. Heirloom sweet potato varieties a preliminary look in 2010.
South african average sweet potato consumption is approximately 48 550 tons per annum. Worldwide there are about 6,500 sweet potato varieties including wild accessions, farmer varieties, and breeding lines. Age of cultivars varieties cutting means months gem miguela chipper bonara for ages tuber weight per plant kg 2 1. As of 20, there are approximately 7,000 sweet potato cultivars. To evaluate the performance of 10 readily available sweet potato cultivars under southwest michigan growing conditions. Consumption of sweet potato local consumption of sweet potato compared to the production over 10 year period. Mixtures of conventional rice with cultivars of iron. Sweet potato value chain analysis reveals opportunities. Quality changes in different cultivars of sweet potato. Sweet potatoes are versatile veggies that may be mild or extra sweet, with flesh of white, red, yelloworange or purple. Sweet potatoes need a loamy soil with a ph between 5. The skin of a sweet potato root is a different color than the flesh. Most of the popular varieties are the moistfleshed types. Growth, yield, and quality of sweet potato ipomoea batatas l.
Sweet potato viromes in eight different geographical. Sweet potato ipomoea batatas breeding university of hawaii. Anthocyanin accumulation in the leaves of the purple sweet. White and purple flesh sweet potatoes, as well as organic sweet potatoes, are possible market niches that kentucky growers could fill.
Source international potato center cip sweet potato skin colors come in various shades of creamy white, yelloworange, tan, reddishpurple and red sweet potato flesh colors come in shades of orange, yelloworange, white, purple and red. Sweet potato varieties yams all about sweet potatoes. Sweet potato originated from tropical central america. Initial tests provide us with the following information. Release of six sweetpotato cultivars naspot 1 to naspot 6. The sweet potato evolved in tropical america and ranked second only to the irish potato as an important vegetable until world war ii. Pdf sweet potato cultivars grown and harvested at different times. Potato cultivars cvs respond differently to aeroponics. The objective of this study was to evaluate the interaction of pro. Whether you decide to plant in beds or in grow bags, choose a spot that provides fullsunlight for most of the day. The sweet potato is suitable for growing in zones 311 as an annual, and zones 811 as a perennial. This study evaluated the effect of inground curing by dehaulming on certain compositional and shelflife characteristics of four cultivars asamarig, apomuden, kuffour and tuskegee purple. Sweet potato consumption is highest among americans over 60, and sweet potatoes may have special appeal to aging, healthconscious baby boomers.
The sweet potato ipomea batatas l lam is a tuberousrooted perennial plant belonging to the convolvulaceae or morning glory family. We genotyped all 2 individuals sweet potato plants from togo and. Growth, yield, and quality of sweet potato ipomoea. Potato seed production can be increased dramatically in the greenhouse.
Quality characteristics of vacuumfried snacks prepared. Amaka odenigbo, department of bioresource engineering, mcgill university, 21111 lakeshore road, sainteannedebellevue, qc h9x 3v9, canada, email. The jewel sweet potato, with its copper skin and deeporange flesh, is probably what you think of when you think sweet potato. Order sweet potato diseasetested materials pdf research on sweet potato include the following areas. The canned potatoes are usually packed in heavy syrup or candied. Sweet potato viromes in eight different geographical regions. Analysis on the nutrition composition and antioxidant. Commonly three distinct types of sweet potato available for commercial pro. Varieties that can be harvested or lifted in about 100 to 110 days are bush porto rico, jewel, and vardaman, again when planted from slips. Sweetpotato production, processing, and nutritional. This family includes about 45 genera and species, but only ipomea batatas is of economic importance as food onwueme 1978. Its traditionally used for baking and casseroles, especially. Previous research on anthocyanin accumulation in sweet potato has focused on the roots, but the accumulation progress in the leaves is still unclear.
Evaluation of ten sweet potato cultivars in southwest michigan. The effects of vacuum frying and atmospheric frying on the physicochemical properties and quality characteristics of the deepfatfried snacks were compared in manufacturing snacks using general, yellowfleshed, and purplefleshed sweet potatoes. With certain crops, like broccoli and sweet corn, hybrids tend to be more uniform and vigorous. In the us, orangefleshed sweet potatoes are sometimes called yams, but this name is more properly applied to the true yam, various species in the genus dioscorea although wild forms of sweet potato are not known to exist today, central america and peru are. Pdf this study aimed at adapting harvest time of different potato cultivars in two seasons during the year. List of sweet potato cultivars wikipedia republished wiki 2. An oldfashioned sweet potato that is perhaps the sweetest of all varieties.
More consumer familiarity with fresh sweet potatoes and increases in sweet potato fry consumption contribute to the increase. Smallscale technology and practices for sweet potato growing in southeast oklahoma 3 w e found several advantages to growing sweet potatoes on planting ridges as opposed to flatplanting, especially in wet years when waterlogging and diseases might become an issue. High quality tubers are best produced on fertile, well drained, sandy loams. Sweetpotato production and variety performance in southeast. Performance of informal market sweet potato cultivars in. Regarding the moisture and lipid content of snacks, vacuumfried snacks showed about 50% lower values compared to atmosphericfried snacks. The red garnet was the most savory of the bunch, with a texture deemed very loose. Bars labelled with similar letters are not significantly different at p 0. Summary significant differences were found between the 10 cultivars in total yield, and yield of number one, jumbo, and cull roots. One way people compare them is by the size, shape, and color of the roots.
1566 1427 1136 959 1028 1670 627 780 1186 1194 534 1356 1478 213 843 1615 905 1486 1660 25 1486 415 240 1026 326 1358 1094 738 1200 17 1086 730 54 1334 419 71 1382 1130 604 1016