Stigma receptivity of the protogynous lotus (Nelumbo nucifera Gaertn.) was
assessed throughout flowering with a technique that quantified oxygen relea
se from hydrogen peroxide under the influence of stigma surface peroxidase.
Both receptivity and heat production increased significantly on the day pr
ior to petal opening, remained high while the stigmas were accessible, and
decreased sharply when the pollen was exposed. (C) 2000 Elsevier Science B.
V. All rights reserved.