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Title: Comparative wood anatomy of root and stem of Citharexylum myrianthum (Verbenaceae)

Source: Rodriguésia Volume 65, Number 3, 2014; pp. 567-576.

Author(s)Marcati, Carmen Regina; Longo, Leandro Roberto; Wiedenhoeft, Alex; Barros, Claudia Franca

Publication Year: 2014  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4714-1B

Abstract: Root and stem wood anatomy of C. myrianthum (Verbenaceae) from a semideciduous seasonal forest in Botucatu municipality (22º52’20”S and 48º26’37”W), São Paulo state, Brazil, were studied. Growth increments demarcated by semi-ring porosity and marginal bands of axial parenchyma were observed in the wood of both root and stem. Many qualitative features were the same in both root and stem: fine helical thickenings, and simple and multiple perforation plates in vessel elements; large quantities of axial parenchyma in the growth rings, grading from marginal bands and confluent forming irregular bands in earlywood to lozenge aliform in latewood; axial parenchyma cells forked, and varied wall projections and undulations; septate fibres; forked and diverse fibre endings. Quantitative features differing between root and stem wood were evaluated using student’s t-test, and vessel frequency, vessel element length, vessel diameter, ray height, and vulnerability and mesomorphy indices differed significantly. Root wood had lower frequency of vessels, narrower and longer vessel elements, and taller rays than wood of the stem. The calculated vulnerability and mesomorphy indices indicated that ,I>C. myrianthum plants are mesomorphic. Roots seem to be more susceptible to water stress than the stem.

Keywords: secondary xylem; semideciduous seasonal forest; wood anatomy

Publication Review Process: Formally Refereed

File size: 2,985 kb(s)

Date posted: 09/22/2014

This publication is also viewable on Treesearch:  view
RITS Product ID: 69250
Current FPL Scientist associated with this product
Wiedenhoeft, Alex C.
Research Botanist
  

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