Chinese kale was more sensitive to waterlogging
than Caisin because, in this experiment, Caisin produced roots
from the hypocotyls, whereas, Chinese kale did not. The
presence of hypocotyl roots and gas spaces within the stem near
the base, most likely allowed the Caisin plants to maintain their
rate of leaf development, have a higher leaf water status than the
waterlogged Chinese kale and maintain nitrogen uptake that
was proportional to the net accumulation of dry matter.