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Ronald S. Revord, Sarah T. Lovell, John M. Capik, Shawn A. Mehlenbacher, and Thomas J. Molnar

as inoculum were collected from infected trees growing in Rutgers University field plots. Disease pressure was also provided by natural spread from adjacent breeding nurseries and experimental plots harboring hundreds of infected plants. In addition

Open access

Ed Stover, Chandrika Ramadugu, Mikeal Roose, Joseph Krystel, Richard F. Lee, and Manjunath Keremane

citrus types displayed markedly reduced ACC sensitivity compared with C. trifoliata , indicating that this trait is readily overcome in breeding. For all 3 years of the study, one accession that was represented by only one tree was much less susceptible

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Qianqian Shi, Long Li, Lin Zhou, and Yan Wang

Paeonia delavayi is an unique wild tree peony species with variously colored individuals including yellow, orange, red, dark red, and purple–red occurring both within and between populations, and the yellow colored individuals are considered the

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Ralph Scorza

The genetically available range in tree fruit architecture has not been fully utilized for tree fruit breeding or production. Higher planting densities, new training systems, high coats of pruning, the need to eliminate ladders in the orchard, and mechanized harvesting require a re-evaluation of tree architecture. Dwarf, semidwarf, columnar, and spur-type trees may be more efficient than standard tree forms, especially when combined with specific production systems. Studies of the growth of novel tree types and elucidation of the inheritance of growth habit components may allow breeders to combine canopy growth characteristics to produce trees tailored to evolving production systems.

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Jason D. Lattier and Ryan N. Contreras

( Chen and Ni, 2006 ). The identification and induction of polyploidy can be valuable tools for plant breeding. Irregular meiosis in gametes can result in sterility, whereas “gigas” effects of somatic cells can result in thicker, glossier cuticles

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Allan F. Brown, Gad G. Yousef, Ivette Guzman, Kranthi K. Chebrolu, Dennis J. Werner, Mike Parker, Ksenija Gasic, and Penelope Perkins-Veazie

the observed variation. No study has yet compared the relative impact of years and locations on the accumulation of phenolics or carotenoids in peach. An additional concern is that previous studies have generally bulked fruit samples from the same tree

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Emmanouil N. Tzitzikas, Antonio J. Monforte, Abdelhak Fatihi, Zacharias Kypriotakis, Tefkros A. Iacovides, Ioannis M. Ioannides, and Panagiotis Kalaitzis

, cantalupensis, reticulates, and flexuosus. These reports have shown among traditional landraces an important amount of genetic variability, which has to be systematically classified before their potential use like their introduction in breeding programs. Among

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Nader R. Abdelsalam, Rehab M. Awad, Hayssam M. Ali, Mohamed Z.M. Salem, Kamal F. Abdellatif, and Mohamed S. Elshikh

of fig trees ( Achtak et al., 2009 , 2010 ; Giraldo et al., 2008 ; Khadari et al., 2004 ; Saddoud et al., 2007 ). Today, SSRs are mostly the markers of choice for many breeding programs ( Hernandez, 2005 ), because of their codominant nature and

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Tingting Sun, Tingting Pei, Zhijun Zhang, Mingjun Li, Linlin Huang, Cuiying Li, Xueyan Shi, Minghui Zhan, Xiaoyu Cao, Fengwang Ma, and Changhai Liu

region of China, drought and low P levels are the most challenging abiotic stresses for apple trees ( Hayano-Kanashiro et al., 2009 ). Phosphorus is an important nutrient because it helps drive apple flowering, as well as fruit set, quality, and yield

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Jeffrey C. Dunne, W. Casey Reynolds, Grady L. Miller, Consuelo Arellano, Rick L. Brandenburg, A. Schoeman, Fred H. Yelverton, and Susana R. Milla-Lewis

trees and/or other structural objects ( Beard, 1973 ) and of the warm-season turfgrasses typically used in the south, bermudagrass exhibits the poorest shade tolerance ( Dudeck and Peacock, 1992 ). The effects of shade can elicit profound physiological