HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Boyer, J. S. Search for Related Content PubMed Articles by Boyer, J. S. Agricola Articles by Boyer, J. S.

Resistances to Water Transport in Soybean, Bean, and Sunflower¹

The resistance to water transport in whole plants and plant segments was measured by a transient flow method for soybean (Glycine max L. (Merr.) var. ‘Harosoy’), bean (Phaseolus vulgaris L. var. ‘Bountiful’), and sunflower (Helianthus annuus L. var. ‘Russian Mammoth’). The resistance to water transport in whole soybean plants was twice that of sunflower and bean. The high resistance in soybean was caused by a high resistance in the root tissue external to the root vascular tissue. The data indicate that leaf water potential will have to drop about twice as far in soybean as in sunflower or bean to maintain a given rate of water transport to the leaf evaporating surface.

Key Words: Glycine max L. (Merr.) • Phaseolus vulgaris L. • Hellianthus annuus L. • Leaf water potential • Transient flow • Steady flow • Transpiration

² Associate Professor of Botany and Crop Physiology, University of Illinois.

Received for publication October 21, 1970.