Abstract

This chapter surveys vegetative growth by examining the mechanism of branching and secondary growth. It highlights developmental pathways on the branches of shoots and roots and shows how these originate from different structures but converge on a common endpoint, which is the production of new apical meristems which greatly enhances the rate of increase in plant biomass. It also points out the developmental pathways that share key similarities in their hormonal responses and genetic control mechanisms. The chapter describes vegetative growth and some of its regulatory pathways that underly the production of secondary xylem and phloem. It examines secondary growth which allows further increases in plant biomass by greatly extending the limits on height.

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