there is no disturbance (e.g., wind, birds, and overexploitation by human), stands bear mature fruit for 30–60 d. The study of the flower initiation and development of high economical value crop provide further informative insights of the mechanisms in
al., 2008a ; Mayak and Halevy, 1972 ; Sood and Nagar, 2003 ). Little information is available on phenolic content of developing rose petals. Sood and Nagar (2003) observed a sharp increase during flower development from the flower bud opening to
of an inductive photoperiod until the transition of the meristem from vegetative to reproductive development is defined as flower initiation, i.e., the sum of the various physiological and biochemical responses to inductive photoperiods that elicit a
Every link of plant reproductive development is affected by multiple factors; during this process, any defect can cause reproductive process failure, which may threaten the survival of the species ( Gao, 2002 ). In seed plants, flower bud
as temperatures exceed the optimum temperature. Models that describe flower development rates as a function of ADT have been developed for many species. These prediction models allow the user to determine the current stage of flower development and
morphogenetic process. Endogenous hormones have important regulatory roles in all stages of flower development ( Chandler, 2011 ). Kondo et al. (1999) suggested that the content of IAA might be the key factor influencing apple flower bud differentiation
development and senescence is detected ( Schmitzer et al., 2009 ). As the flower matures, different physiological, biochemical, and genetic processes occur in cells that contributes to the visual changes and characterizes a number of phases in flower life
their flower development and senescence. The aim of our present study was to comparatively characterize the respiratory and physiological changes during flower development and senescence in Freesia hybrid and to provide physiological basis for its
88 ORAL SESSION (Abstr. 528-533) FLORICULTURE: GROWTH AND DEVELOPMENT
Abstract
We found in light and scanning electron microscopic studies of buds of the pistillate ‘Kerman’ pistachio (Pistacia vera L.) that about 12 months elapsed from the time of inflorescence differentiation until the opening of individual flowers. Growth of the rachis and its lateral branches occurred from April to June; sepal differentiation, from late May to mid June; pistil initiation, from early October to March; and carpel development, from late March to early April. Cessation of the development of the inflorescence buds during July, August, and early September appears to be unrelated to nut growth and development, as buds were inactive during that period in both bearing and nonbearing trees.