SECONDARY EFFECTS. “Deeper roots accessed water and nutrients from a greater volume of soil, whilst xylem conduit enlargement and the appearance of secondary growth of xylem by the end of the Devonian increased the hydraulic conductance through stems and trunks to the leafy canopy, helping to maintain higher transpiration rates.”
http://aob.oxfordjournals.org/content/96/3/345.full.pdf
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022