Cell Enlargement during Gravicurvature of Sunflower Hypocotyls

Publisher Website
Google Scholar
Abstract
Three independent methods have shown that cells on the uppermost side of a gravistimulated sunflower hypocotyl stop enlarging; they do not merely switch from elongation to lateral growth. Upper and lower cell diameters were compared as were fresh weight changes of upper and lower cells. The radius of the hypocotyl on the upper side of a horizontal hypocotyl was monitored with a linear displacement transducer and showed no significant increase.