52 ORAL SESSION (Abstr. 449-456) Growth and Development: Effects of Light, Temperature, and CO,
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
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
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
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
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
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
planting, but there are few research studies about tarping, and tarping effects on weed dynamics and soil processes are poorly understood. The effects of tillage on weeds are species-specific and dependent on the germination requirements (light, temperature
Poster Session 46—Temperature Stress Physiology 21 July 2005, 12:00–12:45 p.m. Poster Hall–Ballroom E/F
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