The coleoptile sheath of wheat impedes oxygen transport to seminal roots


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3 Citations (Scopus)


Abstract Wheat, Triticum aestivum cv. Gamenya, seedlings were grown for 4d in acrated 0.5 mol m−3 CaSO4 solution. A cylindrical platinum‐electrode and vernier microscope were used to examine the effects of the colcoptile sheath on O2 transport from shoots to seminal roots via the internal gas‐space system, and on the clongation of the root tip. By removing the colcoptile sheath, O2 concentrations at the root tip in an O2‐free medium at 5°C increased from 0.017 to 0.17 mol m−3 O2 when 100 kPa O2 was around the shoots. When the shoots were in air, the separation of the colcoptile sheath from the primary leaf caused the rate of root clongation in the anoxic medium to increase by two fold.

Original languageEnglish
Pages (from-to)405-406
Number of pages2
JournalPlant, Cell & Environment
Issue number4
Publication statusPublished - 1 Jan 1990
Externally publishedYes


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