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John Erwin, Rene O’Connell, and Ken Altman

colorful and/or uniquely shaped scions as potted plants ( Kim and Kim, 2006 ). Erwin (1996) subsequently researched temperature and photoperiod effects on grafted cacti growth to decrease scion losses. Little recent work has focused on desert cacti

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Karen K. Schneck, Cheryl R. Boyer, and Chad T. Miller

Mills (1994) found that as RZTs increased, snapdragons improved their nutrient uptake and growth. Wai and Newman (1992) reported that time to flower for cut flower snapdragon was reduced when RZTs increased even when air temperatures were cool

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James E. Brown-Faust and Royal D. Heins

52 ORAL SESSION (Abstr. 449-456) Growth and Development: Effects of Light, Temperature, and CO,

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Douglas G. Bielenberg and Ksenija Gasic

Characterizing the regulation of development by temperature requires controlled exposure of replicate plants (whole or in part) to multiple temperature environments simultaneously. Experiments with seeds or other small plant segments can be

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Veronica L. Justen and Vincent A. Fritz

concentration is highly influenced by genotype and environmental factors including soil fertility, temperature, and light ( Antonious et al., 1996 ; Charron and Sams, 2004 ; Engelen-Eigles et al., 2006 ; Rosen et al., 2005 ). We found strong correlations

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Thibault Nordey, Elias Shem, and Joel Huat

seedling growth rates vary with temperature. It would, therefore, be interesting to assess the accuracy of degree-days, a common indicator of plant phenology, to predict seedling development ( Bonhomme, 2000 ; Brisson et al., 2003 ; Jones et al., 2003

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John E. Stenger and Harlene M. Hatterman-Valenti

production areas. For this reason, large temperature fluctuations are likely to impact vine progress in its transition from active growth to a dormant resting state. To stabilize production in these northern regions of the United States through cultivar

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Carlos De la Cuadra, Alexis K. Vidal, Susana Lefimil, and Leví Mansur

optimal germination temperature is unknown, the studies above indicate that temperatures at or above 20 °C inhibit germination and at 10 °C germination is enhanced. Our work aims to achieve further precision of the effect of temperature on seed germination

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Suping Zhou, Roger Sauve, Tingting Chen, Sara Bhatti, and Debrah Long

Poster Session 46—Temperature Stress Physiology 21 July 2005, 12:00–12:45 p.m. Poster Hall–Ballroom E/F

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Anke van der Ploeg, Susana M.P. Carvalho, and Ep Heuvelink

maintain high production levels year round. Cultivars that are better adapted to lower temperatures could contribute significantly to a reduction in energy use and consequently in CO 2 emission. For breeding of more energy-efficient cultivars, genotypic