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Patrick J. Conner

testing program is to evaluate genotypes for potential use in the breeding program or for suitability as new cultivars. The orchard is managed to mimic the care that would be given to a well-managed commercial orchard. Table 1. Number of trees evaluated

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Adolfo Rosati, Andrea Paoletti, Raeed Al Hariri, Alessio Morelli, and Franco Famiani

The higher productivity of modern fruit tree cultivars, compared with wild trees, is mostly related to their higher partitioning of dry matter into fruit [i.e., higher harvest index (HI)] ( Patrick, 1988 ), rather than to differences in

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Mekjell Meland, Oddmund Frøynes, and Clive Kaiser

The southern part of the Hardangerfjord, Norway (lat. 60°19′8.03″N, long. 6°39′14.31″E) is one of the most northerly tree fruit producing areas in the world. The fertile, arable soils have been cultivated for almost a millennium ( Bleie, 1947

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John M. Capik, Megan Muehlbauer, Ari Novy, Josh A. Honig, and Thomas J. Molnar

-term management solution ( Julian et al., 2008 , 2009 ; Thompson et al., 1996 ). Breeding for EFB resistance is now a major objective of hazelnut breeding programs in the United States ( Mehlenbacher, 1994 ; Molnar et al., 2005a ). Recent taxonomic studies

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Ann Callahan, Chris Dardick, Roberta Tosetti, Donna Lalli, and Ralph Scorza

, Lon Rombough, who had a stoneless breeding program as a hobby ( Fig. 4 ). These sources were budded to rootstocks and planted in the fields of USDA-ARS–Appalachian Fruit Research Station, Kearneysville, WV. The first trees that bloomed and fruited were

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E.W. Stover and T.G. McCollum

controlled. Advanced breeding lines are present at both farms with mature trees of recently identified selections, suitable for crossing, usually present as single seedling-derived individual trees. Because HLB and ACC weaken trees and compromise cropping

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Godfrey P. Miles, Ed Stover, Chandrika Ramadugu, Manjunath L. Keremane, and Richard F. Lee

. Presently, greater than 80% of Florida citrus trees are infected with C Las ( Singerman and Useche, 2015 ) with the great majority exhibiting associated disease symptoms: yellow asymmetrical patterns (blotchy mottle) on leaves, vein yellowing and thickening

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Keisuke Nonaka, Masayuki Kita, Yoshinori Ikoma, Hiroshi Fukamachi, Atsushi Imai, Terutaka Yoshioka, and Masahiko Yamada

Institute of Fruit Tree Science (NIFTS)] and has continued since at the NIFTS Okitsu and Kuchinotsu Citrus Research Stations. Breeding is focused mainly on improving fruit quality, defined as high sugar content, excellent flavor, seedlessness, ease of

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Craig M. Hardner, Marisa Wall, and Alyssa Cho

discussed (R. Willcox et al., personal communication) and a moderate ( r 2 = 0.6) relation between individual tree vigor (assessed using remote sensing) and yield was found. Genetics and breeding. Almost one-third of presentations discussed genetics and

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Craig E. Kallsen, Dan E. Parfitt, and Brent Holtz

, respectively, and the distance between rows was 5.79 and 7.32 m, respectively. At the Kern County site, the trial consisted of nine female genotypes selected from a breeding program and Kerman. All were grafted on PG1 rootstock. Ten trees of a given genotype