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Fig. 1 | BMC Plant Biology

Fig. 1

From: Timing of shoot development transitions affects degree of perenniality in Arabidopsis lyrata (Brassicaceae)

Fig. 1

Diagram showing alternative hypotheses to explain contrasting life history patterns in A. lyrata. a Strict meristem allocation hypothesis, in which inflorescences develop only from meristems that did not start vegetative development before the onset of reproduction. Genotypes that produce more vegetative shoots before starting reproduction (top row) would thus produce fewer inflorescences than those with fewer vegetative shoots (bottom row). b Quantitative inhibition hypothesis, in which plants with weaker apical dominance (top row) undergo more extensive vegetative development from lateral shoots prior to reproduction, which then produce fewer inflorescences than plants that maintain stronger apical dominance prior to reproduction (bottom row). Examples of first-order (1°), second-order (2°), and third-order (3°) shoots are shown on the bottom right panel. Internodes within the vegetative crown (all portions of plant except inflorescences) are elongated to illustrate branching pattern

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