Diurnal Variations in Root Diameter | Zendy

M. G. Huck | Zendy; Betty Klepper | Zendy; Howard M. Taylor | Zendy

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Diurnal Variations in Root Diameter

Author(s) -

M. G. Huck,

Betty Klepper,

Howard M. Taylor

Publication year - 1970

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.45.4.529

Subject(s) - diurnal temperature variation , root (linguistics) , environmental science , biology , atmospheric sciences , physics , linguistics , philosophy

Many aerial plant parts show diurnal patterns of water status, with a decrease in water content and water potential corresponding to the midday peak in evaporative demand (5, 7, 9, 10). Similar diurnal patterns might be expected in root tissues because the water potential in the root xylem should follow closely the xylem water potential of plant tops. The data reported here, obtained at the Auburn Rhizotron (13) where roots in soil may be observed through transparent panels while tops are exposed to field conditions, show that lateral roots do indeed undergo diurnal variations in diameter.

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