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Dongmei Wei, Chao Gao and Deyi Yuan

Calcium is an essential element and an important ubiquitous messenger that participates or modulates many intracellular metabolic processes of plant growth and development ( Bush, 1995 ; Ge et al., 2007a ; Hepler and Wayne, 2005 ; Jones and Lunt

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Bandara Gajanayake, K. Raja Reddy, Mark W. Shankle and Ramon A. Arancibia

grown under furrow or drip-irrigated conditions in California ( Stoddard et al., 2013 ). Soil moisture stress is one of the crucial abiotic stress factors that limits growth and development of sweetpotato, affecting storage root production and yield

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Jingwei Dai and Robert E. Paull

The growth and development of Anthurium andraeanum Andre cv. Kaumana flower before and after emergence from the subtending leaf base was studied. Eighty days before emergence, the anthurium flower was =0.3 cm long, enclosed by two tightly rolled stipules at the base of the subtending leaf petiole. During the rapid elongation stage of the leaf petiole, the flower (0.8 to 1.0 cm long) entered a period of slow growth 40 to 60 days before flower emergence. After the subtending leaf blade unfurled and had a positive photosynthetic rate, flower growth resumed. Spathe color development started =28 days before emergence when the flower was =50% of the emergence flower length (4.5 cm). At flower emergence, the spathe, excluding the lobes, was =75% red. The lobes did not develop full redness until 7 to 10 days after emergence. Peduncle growth was sigmoidal with the maximum growth rate 21 days after emergence. Spathe growth is characterized by a double sigmoid curve. The young, growing, subtending leaf blade had a negative net photosynthetic rate. Removal of this leaf blade advanced flower emergence by 18 days. The soft green leaf (25 to 30 days after leaf emergence) had a slightly positive measured net photosynthetic rate, and the removal of this leaf resulted in flower emergence 11 days earlier. A mature subtending leaf had the highest measured net photosynthetic rate, and its removal had little effect on flower emergence. The subtending leaf acted as a source of nutrients required for the developing flower. Altering the source-sink relationship by leaf removal accelerated flower emergence, probably by reducing the slow growth phase of the flower.

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Junfang Wang, Yuxia Sun, Hengzhen Wang, Xueqiang Guan and Lijun Wang

conditions ( Wang et al., 2013b ). However, it is unclear how resveratrol concentration changes during development of leaves of different cultivars under natural conditions. Resveratrol biosynthesis and accumulation in grape tissues can be affected by biotic

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K.R. Maluea, R.W Holton, S.E. Schlarbaum, E.T. Graham and R.N. Triaiano

122 POSTER SESSION 17 Growth & Development/Floriculture, Ornamentals, & Cross-Commodity

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Kevin M. Folta and Kayla Shea Childers

many other species. Although this translational research is important, few efforts have attempted to extrapolate the findings to the design of plant growth strategies that not only foster plant growth and development, but rather control plant growth and

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David M. Francis, Sheryl A. Barringer and Robert E. Whitmoyer

Salaries and research support were provided by state and federal funds appropriated to The Ohio State Univ., Ohio Agricultural Research and Development Center, and grant funds by the Mid-America Food Processors Association. We would like to

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Don R. LaBonte and David H. Picha

82 ORAL SESSION 20 (Abstr. 150–156) Vegetable Crops: Growth and Development

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Jingwei Dai and Robert E. Paull

88 ORAL SESSION (Abstr. 528-533) FLORICULTURE: GROWTH AND DEVELOPMENT

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Ramona A. Reiser and Robert W. Langhans

183 ORAL SESSION 55 (Abstr. 390-397) Floriculture: Growth and Development