Abstract: Little is known regarding physiological processes which regulate seed growth rate and seed size in peanut (Arachis hypogea). As a step toward understanding these processes underlying varietal differences in seed size, the relationship between the number of cells in the seed and seed weight was determined for five peanut cultivars.The final seed size for these cultivars ranged from approximately 270 to 1000 mg and the final cell number from 3.2 to 5.4 million. Seed weight or size was correlated with cell number more than cell size, but smaller seeds had more cells per unit of seed weight. This suggests that physiological processes controlling both cell size and number are operative in determining final seed size among cultivars. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Cell Number in Relation to Seed Size in Peanut (Arachis Hypogaea L.)" by Nandini Nimbkar, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.