Accession Number : AD0712270

Title :   INTERCELLULAR SPACES ALONG THE RAY PARENCHYMA--THE GAS CANAL SYSTEM OF LIVING WOOD,

Corporate Author : SVENSKA TRAFORSKNINGSINSTITUTET STOCKHOLM

Personal Author(s) : Back,Ernst L.

Report Date : JUN 1968

Pagination or Media Count : 6

Abstract : A survey of published facts on the intercellular spaces alongside the parenchyma cells, on the respiration of these cells, and on the air composition in sapwood of soft and hardwoods, indicates that these intercellulars may form the necessary gas canal system serving the gas metabolism of the parenchymatous cells. This gas canal system is formed either by intercellular spaces within the multiseriate rays at the common border of three parenchymatous cell rows, or by uniseriate rays alongside the four corners of the parenchymatous cell rows. The relative volume of the gas canal system was estimated in Scotch pine (Pinus sylvestris), Norway spruce (Picea abies), and European beech (Fagus sylvatica) to be in the range of a few thousandths of the wood volume. Parenchymatous cells regularly have circular or slitlike pits, so-called blind pits, to the intercellular gas canals. (Author)

Descriptors :   (*WOOD, *CELL STRUCTURE), PLANT TISSUE, AIR, RESPIRATION, SWEDEN

Subject Categories : Anatomy and Physiology
      Wood, Paper and Related Forestry Products

Distribution Statement : APPROVED FOR PUBLIC RELEASE