This book will expound the latest information on the current state of persimmon genomics and transcriptomics, with a particular focus on the latest findings and analysis in relation to the most important agronomic traits. The genus Diospyros contains about 400 species distributed all continents of the globe. Most of Diospyros species are distributed in the tropical and subtropical regions, while cultivated persimmon or simply kaki (Diospyros kaki) originates in East Asia and has been grown in China, Japan and Korea for many years. World production of persimmon has been increasing continuously since 1990s, with China being the most producer. Outside Asia, kaki production has been rapidly increasing in Spain in recent years. Because kaki is mostly hexaploid (2n = 6x =90) and its genome size is quite large with the flow cytometric analysis estimation of about 900 Mb, genetic and molecular studies in persimmon are quite complicated. Diploid close relatives of kaki,D. lotus and D. oleifera have been recently used as model species of kaki. Utilizing these species, molecular basis of several economically molecular basis of important traits such as sexuality and astringency has been studied, giving important information for kaki breeding.