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Dan E. Parfitt, Chih-Cheng T. Chao, Craig Kallsen, Joe Maranto, and Louise Ferguson

33 ORAL SESSION 2 (Abstr. 392–396) Breeding & Genetics–Fruits/Nuts

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Paul M. Lyrene

13 ORAL SESSION 2 (Abstr. 009-016) Berries: Breeding and Genetics

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Seth D. Wannemuehler, Chengyan Yue, William W. Shane, R. Karina Gallardo, and Vicki McCracken

environmental adaptability are difficult to measure in the field using conventional breeding methods. However, breeding methods combining conventional practices with DNA marker–assisted technologies provide greater opportunities for improvement of these complex

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C. Deslauriers, C. Burbidge-Boyd, K. Sutherland, and K. Sanford

65 POSTER SESSION 7 Breeding/Fruits & Nuts

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Henry M. Donselman

86 WORKSHOP 8 (Abstr. 936) Breeding Tropical Ornamentals

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F. Bartolozzi, M.L. Warburton, S. Arulsekar, and T.M. Gradziel

Almond [Prunus dulcis (Mill.) D.A. Webb, syn. P. amygdalus, Batsch; P. communis (I.) Archangeli] represents a morphologically and physiologically variable group of populations that evolved primarily in central and southwest Asia. California cultivars have been developed from highly selected subgroups of these populations, while new breeding lines have incorporated germplasm from wild almond and closely related peach species. The genetic relatedness among 17 almond genotypes and 1 peach genotype was estimated using 37 RAPD markers. Genetic diversity within almond was found to be limited despite its need for obligate outcrossing. Three groupings of cultivar origins could be distinguished by RAPD analysis: bud-sport mutations, progeny from interbreeding of early California genotypes, and progeny from crosses to genotypes outside the California germplasm. A similarity index based on the proportion of shared fragments showed relatively high levels of 0.75 or greater within the almond germplasm. The level of similarity between almond and the peach was 0.424 supporting the value of peach germplasm to future almond genetic improvement.

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Mark S. Strefeler and Robert Quen

84 ORAL SESSION 23 (Abstr. 183–190) Breeding/Floriculture & Ornamentals

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David H. Byrne, Patricia Klein, Muqing Yan, Ellen Young, Jeekin Lau, Kevin Ong, Madalyn Shires, Jennifer Olson, Mark Windham, Tom Evans, and Danielle Novick

RRD ( Amrine, 1996 ; Epstein and Hill, 1999 ; Thomas and Scott, 1953 ). All are species that are native to North America except for the Asian native species Rosa spinosissima ( Table 1 ). From a breeding point of view, introgressing genetic

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Lorenzo León, Raúl de la Rosa, Diego Barranco, and Luis Rallo

comparative field trials of olive cultivars from different origins are very scarce in all Mediterranean countries. At the same time, the need for more suitable cultivars prompted the development of olive breeding programs in the main olive-producing countries

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Wayne J. Bourgeois, Charles E. Johnson, William A. Young, and Alvin J. Adams

139 ORAL SESSION 40 (Abstr. 275–281) Fruits: Breeding and Genetics