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Architecture of invasion: the case of Brazilian pepper “Every bud of a tree is an individual vegetable being . . .” 2 components in growth of woody plants repetitive expression of growth components = modular growth overview: structural basis of tree form primary orientation: orthotropic vs plagiotropic continuous vs rhythmic growth longevity of apical meristems: determinate vs indeterminate position of lateral buds differentiation of trunk and branches tree architecture defined the tree architectural models of Halle, Oldeman & Tomlinson (1978) BP keys to Atkins model architectural features of BP: orthotropic habit architecural features of BP: nonrhythmic branching loss of apical meristem releases closest axillary bud from dormancy architectural features of BP: indeterminate meristems, lateral flowers modification: occasional terminal flowering compound leaves in long cylinders compound leaves provide disposable branches multilayer leaf arrangement increases surface area of canopy invasion ecology & BP architecture: summary a potential biological control agent: sawfly H. hubrichi research objectives methods methods, cont’d graph: effect of defoliation on height & diameter graph: effect of defoliation on flower & fruit production BP not particularly stress tolerant photo: controls vs 2 defoliations methods, cont’d graph: effect of defoliation on height & diameter graph: effect of defoliation on flower & fruit production BP not particularly stress tolerant photo: controls vs 2 defoliations


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