Vegetative & Floral Tissue Development
The animation of floral organogenesis (below) was created by Bridget Lamp and Vito Polito at UC Davis from a series of scanning electron micrographs. It simulates the development of the shoot apical meristem of an almond (Prunus dulcis) flower bud. The developmental sequence begins with the vegetative stage in mid-July and concludes with the completion of floral organ initiation in mid-September.(Lamp et. al. 2001, J. Amer. Soc. Hortic. Sci. 126:689-696).
Although flower tissue is derived from vegetative tissue, the location and type of vegetative tissue which develops into flowers, and ultimately fruits, varies among tree fruit and nut crop species grown in California. An understanding of the bearing habit, or location of buds which form flowers and fruit in individual crop species, is vital to optimizing pruning and training practices in an orchard. The Pruning and Training section of this website includes illustrations and descriptions of the bearing habit of common California fruit and nut crop species.