The hydraulic architecture of an arborescent monocot: ontogeny‐related adjustments in vessel size and leaf area compensate for increased resistance

Bamboos are arborescent monocotyledons that have no secondary growth, but can continually produce conduits with diameters appropriate to the current size of plant. Here, we studied bamboo hydraulic architecture address mechanisms involved in compensating for increase resistance during ontogeny. We measured weighted vessel (Dh) at different distances from apex along stem Bambusa textilis. The components and individuals heights were quantified using high-pressure flowmeter method. Dh showed tip-to-base widening a scaling exponent range those reported trees. Although theoretical conductivity decreased base-to-tip, leaf-specific did not change. Leaves contributed most whole-shoot resistance, followed by leaf-bearing branches. Roots c. 13% whole-plant resistance. Interestingly, taller lower owing an increased number resistances parallel (side-branches), while was independent plant size. Tip-to-base height-independent constant conductance could be optimization B. Similar patterns also been found woody plants this exhibits them without growth.