Mathematical model studies of the comprehensive generation of major and minor phyllotactic patterns in plants with a predominant focus on orixate phyllotaxis
Fig 7
Phyllotactic patterns generated in computer simulations using DC2.
(A) Computer simulations using DC2 were performed under various settings of parameters α and Γ (101 settings for α and 101 settings for Γ) with N = 1,1/3, or 1/5, and the resultant patterns are displayed for the cases of N = 1 and 1/3 according to the color legend shown in Fig 3. Simulations were started by placing a single primordium or two primordia at a central angle of 120° on the SAM periphery. (B) The regular alternate, two-cycle alternate, and tetrastichous four-cycle alternate patterns generated in computer simulations using DC2 in (A), including simulations with N = 1/5 as well as N = 1 and 1/3, were plotted using the ratio of absolute values of two successive divergence angles as the abscissa and the ratio of two successive plastochron times as the ordinate. The red dots indicate tetrastichous four-cycle patterns, while the black dots indicate regular alternate and two-cycle patterns. The blue dots show the data of real orixate phyllotaxis observed for winter buds of O. japonica (calculated from the data of P1~P2 and P2~P3 in Fig 4D). (C) Magnification of the lower-left corner of (B).