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Soo-Hyung Kim, Kenneth A. Shackel, and J. Heinrich Lieth

We thank Alexandra Rosati and Jonathan Guan from the NSF Young Scholars Program for carrying out stem water potential measurements and preliminary photosynthesis measurements, respectively. We thank Drs. Loren Oki and Mark Roh for helpful comments

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Sorkel Kadir

chlorophyll fluorometer and growth chambers and Kassim Al-Khatib for the use of photosynthesis measurement system. Mention of a trademark does not imply endorsement of the product.

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Gina E. Fernandez and Marvin P. Pritts

57 ORAL SESSION 17 (Abstr. 116-123) Tree Fruit and Berries: Gas Exchange/Photosynthesis

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Mark A. Hubbard, James A. Flore, John C. Wise, and James W. Johnson

57 ORAL SESSION 17 (Abstr. 116-123) Tree Fruit and Berries: Gas Exchange/Photosynthesis

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Changhoo Chun and Cary A. Mitchell

76 ORAL SESSION 12 (Abstr. 078–083) Photosynthesis

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Jakob Markvart, Eva Rosenqvist, Helle Sørensen, Carl-Otto Ottosen, and Jesper M. Aaslyng

of the plant circadian clock with the environmental period does influence the net photosynthesis positively ( Dodd et al., 2005 ; Hotta et al., 2007 ). However, supplemental light during the night period might reset the circadian rhythms of the crop

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Lailiang Cheng and Leslie H. Fuchigami

119 ORAL SESSION 31 (Abstr. 597–603) Photosynthesis & Carbon Metabolism–Fruits/Nuts

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D.P. Miller, G.S. Howell, and J.A. Flore

Chambers were constructed to measure gas exchange of entire potted grapevines (Vitis vinifera L.). The plant enclosures were constructed from Mylar film, which is nearly transparent to photosynthetically active radiation. Maintaining a slight, positive, internal pressure allowed the Mylar chambers to inflate like balloons and required no other means of support. The whole-plant, gas-exchange chamber design and construction were simple and inexpensive. They were assembled easily, equilibrated quickly, and did not require cooling. They allowed for the measurement of many plants in a relatively short period. This system would enable the researcher to make replicated comparisons of treatment influences on whole-plant CO2 assimilation throughout the growing season. While CO2 measurement was the focus of this project, it would be possible to measure whole-plant transpiration with this system.

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Qiyuan Pan and Bruno Quebedeaux

57 ORAL SESSION 17 (Abstr. 116-123) Tree Fruit and Berries: Gas Exchange/Photosynthesis

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Joshua Sherman, Richard J. Heerema, Dawn VanLeeuwen, and Rolston St. Hilaire

optimum level of Mn in the medium treatment there is higher electron transport rates, light reactions, and NADPH turnover for the dark reactions, therefore, increased assimilation of CO 2 . Fig. 2. Mean ( A ) leaflet photosynthesis, ( B ) intercellular CO