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Arthur Villordon, Don LaBonte and Julio Solis

of sweet potatoes ( Ipomoea batatas Poir.) and an anatomical comparison of the roots J. Hort. Sci. Biotechnol. 74 785 790 Lowe, S.B. Wilson, L.A. 1974 Comparative analysis of tuber development in six sweet potato [ Ipomoea batatas (L.) Lam

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Arthur Villordon, Jeffrey Cole Gregorie, Don LaBonte, Awais Khan and Michael Selvaraj

In sweetpotato ( Ipomoea batatas ), knowledge about the factors that determine SRL is of scientific and practical importance because SRL helps to determine storage root size and shape ( Lowe and Wilson, 1974 ). In the processing industry, especially

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Arthur Villordon, Christopher Clark, Tara Smith, Don Ferrin and Don LaBonte

tuberous root in sweetpotato plants ( Ipomoea batatas Lam.) Biotronics 23 75 80 Golden, E.A. Duval, J.R. Albregts, E.E. Howard, C.M. 2003 Intermittent sprinkler irrigation for establishment of bare

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Arthur Villordon, Don LaBonte, Nurit Firon and Edward Carey

characterization of sweetpotato MADS-box gene (IbAGL17) isolated from tuberous root Plant Biotechnol. 22 217 220 Ku, A.T. Huang, Y. Wang, Y. Ma, D. Yeh, K. 2008 IbMADS1 ( Ipomoea batatas MADS-box 1 gene) is involved in tuberous root initiation in sweet potato

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Robert O.M. Mwanga, Gerald Kyalo, Gorrettie N. Ssemakula, Charles Niringiye, Benard Yada, Milton A. Otema, Joweria Namakula, Agnes Alajo, Benjamin Kigozi, Rose N.M. Makumbi, Anna-Marie Ball, Wolfgang J. Grüneberg, Jan W. Low and G. Craig Yencho

Two sweetpotato [ Ipomoea batatas L. (Lam.)] cultivars, NASPOT 12 O (Namulonge sweetpotato 12 orange-fleshed) and NASPOT 13 O (Namulonge sweetpotato 13 orange-fleshed) were approved for release by the Ugandan Plant Variety Release Committee (UPVRC

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Nicholas A. George, Mark Shankle, Jeff Main, Kenneth V. Pecota, Consuelo Arellano and G. Craig Yencho

In developed, nations sweetpotato ( Ipomoea batatas ) is grown predominantly for high-value fresh consumption and processed food markets, but is also increasingly used for producing value-added foods and bio-based industrial products ( United States

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Rebecca G. Sideman

We evaluated the performance of several sweetpotato (Ipomoea batatas) cultivars grown on raised beds covered with biodegradable black mulch in New Hampshire. Six cultivars were evaluated over 4 years, and an additional four cultivars were evaluated in 2 or 3 years. Cultivars showed significant differences in marketable yield, percent cull, and percent small roots. The cultivars Covington and B94-14 Beauregard consistently produced high yields, whereas Vardaman consistently produced the lowest yields. ‘Georgia Jet’ exhibited variable performance, with marketable yields among the highest in 1 year and the lowest in another, largely because of a high percentage of cull roots due to severe cracking. Yields measured in our study compare favorably with average U.S. yields, with several cultivars producing over 400 50-lb bushels/acre in all years in which they were grown. In a 2-year study with the cultivar Beauregard, biodegradable mulch increased overall yields (marketable, cull, and small roots) as compared with bare ground production on raised beds. However, the percentage of culled roots was higher in mulch treatments, primarily due to breakage during digging, and the observed increases in marketable yields were not statistically significant.

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Arthur Villordon, Christopher Clark, Don LaBonte and Nurit Firon

changes in fixation, transport, and allocation of carbon in sweetpotato using 11C tracer J. Amer. Soc. Hort. Sci. 112 545 554 Kitinoja, L.A. 1987 Effects of low concentrations of ethylene on sweetpotatoes ( Ipomoea batatas L. Lam) during curing and

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Arthur Villordon, Don LaBonte, Julio Solis and Nurit Firon

traits in three range grasses J. Expt. Bot. 15 5581 5594 Belehu, T. Hammes, P.S. Robbertse, P.J. 2004 The origin and structure of adventitious roots in sweet potato ( Ipomoea batatas ) Aust. J. Bot. 52 551 558 Berntson, G.M. 1994 Modelling root

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Susan L. Barkley, Jonathan R. Schultheis, Sushila Chaudhari, Suzanne D. Johanningsmeier, Katherine M. Jennings, Van-Den Truong and David W. Monks

Studies were conducted in 2012 and 2013 to compare Evangeline to various sweetpotato (Ipomoea batatas) varieties (Bayou Belle, Beauregard, Bonita, Covington, NC05-198, and Orleans) for commercial production in North Carolina. In another study, microwaved and oven-baked ‘Evangeline’ and ‘Covington’ sweetpotato roots were subjected to analysis of chemical and physical properties [color, dry matter (DM), texture, and sugar] and to sensory evaluation for determining consumer acceptance. ‘NC05-198’ produced the highest no. 1 grade sweetpotato 600 bushels [bu (50 lb)] per acre and total marketable storage root yield was similar to ‘Bayou Belle’ and ‘Beauregard’ (841, 775, and 759 bu/acre, respectively). No. 1 and marketable root yields were similar between ‘Orleans’ and ‘Beauregard’. However, ‘Orleans’ produced more uniform roots than ‘Beauregard’, in which the latter had higher cull production. ‘Evangeline’ was comparable to no. 1 yield of ‘Bayou Belle’, ‘Orleans’, and ‘Covington’, which indicates the ability of this variety to produce acceptable yields in North Carolina conditions. ‘Covington’ had slightly higher DM than ‘Evangeline’, but instrumental texture analysis showed that these varieties did not differ significantly in firmness after cooking. However, microwaved roots were measurably firmer than oven-baked roots for both varieties. In this study, ‘Evangeline’ had higher levels of fructose and glucose, with similar levels of sucrose and maltose to ‘Covington’. Consumers (n = 100) indicated no difference between varieties in their “just about right” moisture level, texture, and flavor ratings, but showed a preference for Evangeline flesh color over Covington. Consumers in this study preferred oven-baked over microwaved sweetpotato (regardless of variety) and indicated that Evangeline is as acceptable as the standard variety Covington when grown in the North Carolina environment.