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Lingdi Dong, Waltram Ravelombola, Yuejin Weng, Jun Qin, Wei Zhou, Gehendra Bhattarai, Bazgha Zia, Wei Yang, Linqi Shi, Beiquan Mou, and Ainong Shi

., 1998 ; Hutchinson and McGiffen, 2000 ). Cowpea is a highly genetically diverse crop consisting of more than 30,000 accessions worldwide ( Karapanos et al., 2017 ), which is critical for establishing a strong breeding program to enhance cowpea variety

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Kate Evans, Lisa Brutcher, Bonnie Konishi, and Bruce Barritt

fruit quality is a major part of any apple breeding program, and breeders are constantly searching for methods to help measure these important traits. To date, sensory analysis is by far the most preferred form of testing for crispness; however, there is

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Chandrasekar S. Kousik, B.M. Shepard, Richard Hassell, Amnon Levi, and Alvin M. Simmons

mites may be different. We also identified PI 357708 and PI 368526 belonging to C. lanatus var. lanatus as potential sources of resistance to broad mites. From a breeding perspective, it may be easier to transfer resistance genes from C. lanatus

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J.J. Luby

and their invaluable contributions to the Univ. of Minnesota fruit breeding program in recent years.

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José J.M. van der Meulen-Muisers, Joop C. van Oeveren, and Jaap M. van Tuyl

.A. Hoekstra, and H.M.C. van Holsteijn for their critical reading of the manuscript. This work was financially supported by the Urgency Programme for Research on Diseases and Breeding of Flower Bulbs. The cost of publishing this paper was defrayed in part by

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Jennifer L. Waters and Stephen R. King

Poster Session 21—Vegetable Breeding 1 28 July 2006, 1:15–2:00 p.m.

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M. Joseph Stephens, Jessica Scalzo, Peter A. Alspach, Ron A. Beatson, and Ann Marie Connor

Small fruit breeding programs consider fruit yield as one of their most important commercial objectives. This is especially so in programs working to improve cultivars for the processing industry, where it is often the top breeding objective. Way

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J.D. Norton, G.E. Boyhan, and B. Tangsukkasemsan

Plum leaf scald (PLS) caused by the organism Xylella fastidiosa is one of the most serious diseases of plum. After X. fastidiosa was identified as the causal agent for PLS, a feral source (Starcher no. 1) was used extensively in the breeding program. Microscopic (phase contrast) examinations of vacuum extracts and petiole squashes and later ELISA were used to determine PLS infection and later were correlated with a rating index for PLS and tree longevity. Cultivars, species, and their progeny, including Prunus americana, P. angustifolia, P. cerasifera, P. munsoniana, P. salicina, P. simoni, P. bullata, and P. triflora were evaluated. Observations indicate that resistance is heritable and controlled by recessive genes. ELISA and visual observation indicated that an Auburn Univ. seedling (CD 122) was free from this disease.

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

mutations, and not so much on hybrid cultivars produced by breeding ( Dhuique-Mayer et al., 2005 , 2009 ; Fanciullino et al., 2006 ; Goodner et al., 2001 ; Matsumoto et al., 2007 ). Goodner et al. (2001) showed that the peak area of BCR determined by

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Wenjing Pang, John E. Luc, William T. Crow, Kevin E. Kenworthy, Robert McSorley, and Robin M. Giblin-Davis

tolerant cultivars would be the most desirable, least costly nematode management practice with the minimum number of ecological effects on non-target species ( Giblin-Davis et al., 1992b ). Breeding and improvement of new bermudagrass cultivars with