Growth response of three selected antisense plants
with weak to intermediate phenotypes. A, Phenotype; B, dry weight; C,
shoot-to-root ratio; and D, photosynthesis of tobacco plants
transformed with the SUT1 antisense construct. Rate of
net photosynthesis of the youngest fully expanded leaf was measured at
a growth irradiance of 500 μmol photons m−2
s−1. wt, Wild type; 17, αNtSUT1-35S17; 30,
αNtSUT1-35S30; 55*, αNtSUT1-35S55*.