Seasonal Changes in the Freezing Behavior of Xylem Ray Parenchyma Cells in Four Boreal Hardwood Species

Cryobiology ◽  
1999 ◽  
Vol 38 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Katsushi Kuroda ◽  
Jun Ohtani ◽  
Masatoshi Kubota ◽  
Seizo Fujikawa
Keyword(s):  
Seasonal Changes ◽  
Freezing Behavior ◽  
Hardwood Species ◽  
Parenchyma Cells ◽  
Ray Parenchyma ◽  
Ray Parenchyma Cells

Freezing behavior of xylem ray parenchyma cells in softwood species with differences in the organization of cell walls

PROTOPLASMA ◽  
1999 ◽  
Vol 206 (1-3) ◽  
pp. 31-40 ◽  
Author(s):  
S. Fujikawa ◽  
K. Kuroda ◽  
Y. Jitsuyama ◽  
Y. Sano ◽  
J. Ohtani
Keyword(s):  
Cell Walls ◽  
Freezing Behavior ◽  
Parenchyma Cells ◽  
Ray Parenchyma ◽  
Ray Parenchyma Cells ◽  
Softwood Species

Supercooling of xylem ray parenchyma cells in tropical and subtropical hardwood species

Trees ◽  
1997 ◽  
Vol 12 (2) ◽  
pp. 97 ◽  
Author(s):  
Katsushi Kuroda ◽  
Jun Ohtani ◽  
S. Fujikawa
Keyword(s):  
Hardwood Species ◽  
Parenchyma Cells ◽  
Ray Parenchyma ◽  
Ray Parenchyma Cells

Ray Structure Differences between Rootwood and Stemwood in a Range of Softwood Species

IAWA Journal ◽  
2009 ◽  
Vol 30 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Pat Denne ◽  
Siân Turner
Keyword(s):  
Parenchyma Cells ◽  
Ray Parenchyma ◽  
Structural Differences ◽  
Ray Parenchyma Cells ◽  
Practical Implications ◽  
Softwood Species

Differences between the ray structure of rootwood and stemwood were analysed in 11 species from 5 families of gymnosperms. Rootwood was consistently found to have fewer ray tracheids, with ray parenchyma cells which were taller axially, wider tangentially, but shorter radially, and had more pits per cross-field than stemwood. A scale for quantifying types of cross-field pitting is proposed, and statistically significant differences in type and diameter of cross-field pitting were found between rootwood and stemwood of most species sampled. These structural differences have practical implications for identification of gymnosperm roots, and for distinguishing between rootwood and stemwood.

Ray Structure in Root- and Stem-Wood of Larix Decidua: Implications for Root Identification and Function

IAWA Journal ◽  
2008 ◽  
Vol 29 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Pat Denne ◽  
Peter Gasson
Keyword(s):  
Wood Anatomy ◽  
Larix Decidua ◽  
Stem Wood ◽  
Parenchyma Cells ◽  
Ray Parenchyma ◽  
Ray Parenchyma Cells ◽  
And Function

Differences in ray structure between root- and stem-wood of softwoods can cause confusion in identifying roots using keys based on stem-wood anatomy. Comparison of root- and stem-wood rays of Larix decidua showed root-wood had fewer ray tracheids, taller, wider but shorter ray parenchyma cells, and larger cross-field pits than stem-wood. The implications of these differences are considered in relation to the identification and function of roots.

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