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Arthur Villordon, Jeffrey C. Gregorie, and Don LaBonte

) first suggested the link between lateral root (LR) development and storage root formation. Growing conditions during the transition from primary to secondary growth directly influence the onset of storage root formation, which is marked by the appearance

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Bandara Gajanayake, K. Raja Reddy, Mark W. Shankle, and Ramon A. Arancibia

early season (first 20 d) has a direct and significant impact on storage root initiation and thus final yield. Sweetpotato is grown as a rain-fed crop in Mississippi and subjected to fluctuating soil moisture conditions in the field. Sweetpotato is also

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R. C. Sloan Jr., P. G. Thompson, W. B. Burdine Jr., J. L. Main, and P. D. Gerard

`Beauregard' storage roots which were discarded from the Mississippi sweetpotato foundation seed program because of the presence of flesh mutations were bedded in Spring 1991. After the plants were pulled from the roots, the roots were further examined, and the flesh mutations were characterized by size and frequency. The progency from the original roots were examined for flesh mutations for three generations in 1991, 1992, and 1993. The degree of mutation in the original root did not influence the degree of mutation in succeeding generations of storage roots. In 1992 and 1993, the degree of mutation in the third and fourth generation roots did not differ from that of storage roots grown from plants from the foundation seed plant beds.

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Arthur Villordon and Jeffrey C. Gregorie

hypothesis that B interacts with the uptake of other mineral nutrients (reviewed in Bariya et al., 2014 ; Fageria, 2001 ). In sweetpotato ( Ipomoea batatas ), B has been associated with storage root disorders such as splitting ( Byju et al., 2007 ) and

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Victor N. Njiti, Qun Xia, Leonna S. Tyler, Lakeisha D. Stewart, Antione T. Tenner, Chunquan Zhang, Dovi Alipoe, Franklin Chukwuma, and Ming Gao

vegetative and reproductive sinks ( Hicklenton, 1990 ; Williams, 1988 ). Manipulation of sinks capacity may enhance sweetpotato yield through assimilates repartitioning. The sweetpotato is a storage root and a major carbohydrate sink. Suppressing the growth

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Fekadu Gurmu, Shimelis Hussein, and Mark Laing

among the five most important food crops in more than 50 of those countries ( Andrade et al., 2009 ). It is one of the most widely grown storage root crops in sub-Saharan Africa (SSA). Sweetpotato is one of the food security crops in Ethiopia grown by

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Arthur Villordon, Don LaBonte, Julio Solis, and Nurit Firon

Koshimizu and Nishida (1949) measured LR branching in sweetpotatoes and postulated that LR branching may be very important “to supply the internal growth elements” for storage root formation. Pardales and Yamauchi (2003) studied sweetpotato LR

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Ting Min, Jun Xie, Yang Yi, Wenfu Hou, Youwei Ai, and Hongxun Wang

browning is the most serious problem for fresh-cut lotus root during processing and storage, limiting the shelf life of lotus root slices ( Conesa et al., 2007 ; Francis et al., 2012 ; Hodges and Toivonen, 2008 ). Phenylalanine ammonia lyase (PAL

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Arthur Villordon, Don LaBonte, and Julio Solis

stage. To our knowledge, these observations represent the first MR-based documentation of in situ sweetpotato AR growth dynamics. Fig. 1. Developing adventitious root ( A–C ), pencil root ( D ), and progression of storage root development ( E

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Arthur Villordon and Christopher Clark

( Lawrence et al., 1986 ; Overstreet, 2013 ). Cracks induced by the nematodes can also provide an opportunity for decay organisms to enter the root and cause secondary storage rots. Current management options for Meloidogyne spp. in sweetpotatoes include