The authors proposed that PGs are the hypothetical flowering hormone called "florigen
." They came to the above conclusion partly through this study of the buds of the poplar and the larch and also through previous results obtained by Groenewald and Visser (1978) and Janistyn (1982a).
Levy and Dean (1998) reviewed models for the control of flowering time including the florigen
concept postulated by Chailakhyan (1936), the nutrient diversion model, and the current multifactorial control model.
The winning board contained the words florigen
, trooz, venerate, contuse and barf.
Physiological studies have sought for manyyears about what is florigen
and have shown that flowering time control is influenced by environmental factors and endogenous cues.
Kurotani et al., "Phytochrome B regulates Heading date 1 (Hd1)-mediated expression of rice florigen
Hd3a and critical day length in rice," Molecular Genetics and Genomics, vol.
In his previous work, CSHL Associate Professor Zach Lippman and Israeli colleagues identified a rare example of hybrid vigor involving a genetic defect in the gene that makes florigen
, a hormone that controls the process of flowering and flower production.