Letter | Published:

Effect of Gibberellin on the Growth of Pollen Tubes


POLLEN grains have recently been used to study the effects of gibberellin. Kato1 obtained a marked stimulation in germination and tube growth in Lilium longiflorum. In 50 mgm./l. of gibberellin the tube growth was five times that of the control during five hours. In a more extensive study Chandler2 confirmed the growth-promoting property of gibberellic acid on pollen grains of 27 species, and 7 of these showed an increase in the percentage of germination as well as tube length.

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  1. 1

    Kato, Y., Bot. Gaz., 117, 16 (1955).

  2. 2

    Chandler, C., Contr. Boyce Thomp. Inst., 19, 215 (1957).

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