TY - JOUR T1 - Differences in the Mobilization of Assimilates of <em>Vitis Vinifera</em> L. Grapevines as Influenced by an Increased Source Strength JF - American Journal of Enology and Viticulture JO - Am J Enol Vitic. SP - 207 LP - 213 DO - 10.5344/ajev.1982.33.4.207 VL - 33 IS - 4 AU - J. O. Johnson AU - R. J. Weaver AU - D. F. Paige Y1 - 1982/01/01 UR - http://www.ajevonline.org/content/33/4/207.abstract N2 - Assimilate partitioning in whole plants was studied by giving carbon dioxide enrichment (CDE) to grapevines.The CDE treatments extended from 85-100(%) bloom through fruit maturation. The greater source strength (SoS) in the CDE-treated plants resulted in larger final dry weight of many of the vegetative parts and carbohydrate content of the leaves on vines carrying one or two clusters. The CDE treatments had no significant effect on total leaf area but enhanced fruit yield in the vines carrying two clusters. The CDE treatments significantly increased the rate of shoot growth but had no significant effect on root to shoot ratios and little effect on the (%) distribution of the total plant dry weight among the plant parts. ER -