Another pollination trick?

Title: Effect of plant growth regulators on pollen tube behavior and seed formation in self-pollinated flowers of Lilium longiflorum Thumb. ‘Georgia’ and ‘Hinomoto’.

Authors: Niimi, Yoshiji; Li, Tong Hua; Nakano, Masaru.

Authors affiliation: Fac. Agric., Niigata Univ., Niigata, Japan.

Published in: Niigata Daigaku Nogakubu Kenkyu Hokoku (1999), 52(1), pages 1-11.

Abstract: “The effect of NAA, BA or both treatments was investigated on pollen tube behavior and seed formation after self-pollination in self-incompatible Lilium longiflorum Thumb. ‘Georgia’ and ‘Hinomoto’. In ‘Georgia’, treatments of the style with 0.1% a-naphthaleneacetic acid (NAA), 0.1% NAA + 1 % benzyladenine (BA) or 3% BA just before pollination efficiently promoted pollen tube growth and enhanced penetration of pollen tubes into the micropyle as well as yielded some full seeds. Treatments of the ovary base with growth regulators had less effect on seed formation than those of the style. In ‘Hinomoto’, however, pollen tube penetration into the micropyle was not obsd. and no seeds were obtained, even when the treatments effective for overcoming self-incompatibility of ‘Georgia’ were adopted. In both cultivars, generative cell division in pollen tubes after self-pollination was delayed as compared with that after compatible cross-pollination, but it was hastened by the treatment of the style with 0.1% NAA + 1% BA.”