@article {G{\'o}mez-del-Campo138, author = {Mar{\'\i}a G{\'o}mez-del-Campo and Constantino Ruiz and Jos{\'e} Ram{\'o}n Lissarrague}, title = {Effect of Water Stress on Leaf Area Development, Photosynthesis, and Productivity in Chardonnay and Air{\'e}n Grapevines}, volume = {53}, number = {2}, pages = {138--143}, year = {2002}, doi = {10.5344/ajev.2002.53.2.138}, publisher = {American Journal of Enology and Viticulture}, abstract = {The responses of two grapevine cultivars from ecologically different regions, Chardonnay from Burgundy, France and Air{\'e}n from La Mancha, Spain, to water stress were compared. The plants were grown in weighing lysimeters under two water availability conditions: water stress and nonstress. Leaf area development, photosynthesis, and dry matter production were evaluated. Except for dry matter produced in the first phase and fruit dry matter at harvest, the interaction between cultivar and irrigation treatment was not significant for any of the parameters evaluated. Water stress resulted in a reduction in the total amount of leaf area developed. Water stress resulted in less growth (leaf area formation) during the later stages of vine growth. Leaf area distribution between primary and lateral shoots was not significantly modified by water stress. The capacity to form leaf area and the sensitivity of leaf area development to water stress were apparently under genetic control. Water stress reduced the photosynthetic activity of mature and healthy leaves to a similar degree in both cultivars. No significant differences were found between cultivars in any of the photosynthesis measurements. Water stress modified timing of dry matter accumulation during the growth cycle. Water-stressed grapevines produced a greater amount of total dry matter accumulation from fruit set to veraison, while nonstressed grapevines produced more dry matter after veraison. Grapevine productivity could be modeled as a linear function of average leaf area during the growth cycle. An increase in plant leaf area resulted in an increase in dry matter production at a similar rate for both nonstress and stress conditions. Cultivar and water availability determined leaf area development, and, in turn, leaf area determined the amount of dry matter produced.}, issn = {0002-9254}, URL = {https://www.ajevonline.org/content/53/2/138}, eprint = {https://www.ajevonline.org/content/53/2/138.full.pdf}, journal = {American Journal of Enology and Viticulture} }