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Adam Bolton, Aneela Nijabat, Muhammad Mahmood-ur-Rehman, Naima Huma Naveed, A.T.M. Majharul Mannan, Aamir Ali, Mohamed A. Rahim, and Philipp Simon

accessions from the USDA NPGS collection of PIs, 15 inbred lines from the USDA carrot breeding program, and eight commercial fresh market hybrids widely grown in the United States were included in this analysis. To better identify heat stress effects on

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Mark E. Clough, George C. Yencho, Barbara Christ, Walter DeJong, Donald Halseth, Kathleen Haynes, Melvin Henninger, Chad Hutchinson, Matt Kleinhenz, Greg A. Porter, and Richard E. Veilleux

The USDA-CSREES NE1031 project entitled “Development of New Potato Clones for Improved Pest Resistance, Marketability, and Sustainability in the East” is a project that addresses the needs of the potato industry of the eastern United States through

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Suzanne O’Connell and Robert Tate

average daily winter temperatures range from 4 to 13 °C which is reflected by USDA hardiness zones 6a to 9a ( USDA, 2012a ). The number of nights subject to freeze warnings has a wide range (e.g., 10 to 110 nights) depending on latitude and elevation. From

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Jessica Chitwood, Ainong Shi, Beiquan Mou, Michael Evans, John Clark, Dennis Motes, Pengyin Chen, and David Hensley

will be useful for spinach breeding efforts. The objective of this study was to perform association analysis for bolting, plant height, and leaf erectness in the 288 accessions of USDA spinach collection. Materials and Methods Plant material and

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William L. Holdsworth, Carly F. Summers, Michael Glos, Christine D. Smart, and Michael Mazourek

( FAOSTAT, 2013 ). The United States is the fifth largest producer of cucumber, and in 2012, 901,000 metric tonnes of fresh market and pickling cucumbers were grown on nearly 55,000 ha for a combined value of $421 million ( USDA, 2008 , 2013 ). Symptoms of

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Greg McCollum and Kim D. Bowman

if sustainable production is to be maintained ( Castle et al., 2011 ). Citrus rootstock breeding has been conducted by the USDA in Florida for more than a century ( Soost and Rouse, 1996 ). The use of hybrids between Citrus spp. and Poncirus

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Donna C. Fare

are located in Tennessee ( USDA, 2014 ). There has been interest in breeding for deciduous yellow-flowering magnolias since the 1950s. Most of the yellow-flowering magnolias have been bred from a U.S. native magnolia, cucumber magnolia ( Magnolia

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Shengrui Yao and Carl J. Rosen

115 d from 1916 to 2009 and is classified as the USDA plant hardiness zone 3b ( Cathy, 1990 ; National Weather Service, 2006 ). The harsh weather combined with the short growing season significantly increases the risk of freezing before a crop can be

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Yiqun Weng

accessions in the USDA collection. Materials and Methods Plant materials and simple sequence repeat markers. Thirty-six C. metuliferus accessions, six cucumber, melon, watermelon, and squash ( Cucurbita pepo ) cultivars or breeding lines, were

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Eugene K. Blythe

produced late in the season when few other plants are in bloom ( Russ, 2007 ). Confederate rose is hardy in USDA zones 7 to 9 ( Scheper, 2003 ). Plants grow as large shrubs or small trees in warmer areas, dropping their leaves in winter and leafing out on