43 POSTER SESSION 2 (Abstr. 025-049) Genetics/Breeding/Biotechnology Thursday, 29 July, 1:00-2:00 p.m.
J.D. Cheung, Y.S. Cha, and B.S. Kim
Patrick P. Moore
13 ORAL SESSION 2 (Abstr. 009-016) Berries: Breeding and Genetics
Majid R. Foolad
Oral Session 15—Vegetable Breeding 2 Moderator: Majid R. Foolad 19 July 2005, 2:00–3:30 p.m. Room 101
Seth D. Wannemuehler, Chengyan Yue, Wendy K. Hoashi-Erhardt, R. Karina Gallardo, and Vicki McCracken
numerous public and private breeding efforts for specifically targeted regional adaptabilities. Breeders have begun focusing their efforts over the previous decades on pest resistance and a wide range of fruit quality attributes ( Chandler et al., 2012
S. Khanizadeh, Y. Groleau, J.R. DeEll, J. Cousineau, R. Granger, and G. Rousselle
147 POSTER SESSION 16 (Abstr. 070-091) Genetics/Breeding/Biotechnology Wednesday, 26 July, 1:00-2:00 p.m.
R.C. Grube, Y. Zhang, B. Huang, and M.M. Kyle
120 ORAL SESSION 25 (Abstr. 175–182) Breeding and Genetics–Vegetables I
Gayle M. Volk and Christopher M. Richards
The role of wild germplasm in agricultural breeding is undergoing a profound change. The wide use of genomic-level characterization data has changed the way breeders can access and exploit the diversity within these accessions. Both low
Shawn A. Mehlenbacher
55 COLLOQUIUM 2 (Abstr. 995-999) Classical and Molecular Approaches to Breeding Horticultural Plants for Disease Resistance
Warren H. Gabelman
Plant Breeding Reviews, Vol. 17. Jules Janick (ed.). 1999. John Wiley, 605 Third Ave., New York, NY 10158. $180. hardcover. ISBN 0471333735.
Thomas H. Boyle
Rhipsalidopsis (Easter cactus) and Schlumbergera (Thanksgiving and Christmas cactus) are two genera of epiphytic cacti endemic to southeastern Brazil. Rhipsalidopsis is comprised of two species (R. gaertneri and R. rosea) and Schlumbergera contains five species (S. opuntioides, S. obtusangula, S. orssichiana, S. russelliana, and S. truncata). There is considerable potential for the improvement of commercial cultivars in both genera. Flower color and form, plant habit, postharvest performance, and the responsiveness to floral induction treatments are selection criteria used in breeding of Rhipsalidopsis. The selection criteria used in breeding of Schlumbergera are flower color and form, growth rate, phylloclade size and shape, plant habit, and the critical daylength for flowering. Inbreeding depression, self-incompatibility, and a long generation time (1.5 to 3 years) are impediments to breeding in both genera. Interspecific hybridization has been performed in Rhipsalidopsis and Schlumbergera, and significant phenotypic variation has been observed within interspecific hybrid populations.