Effects of Zinc and Amino Acid on Cell Division in Ustilago

Interactions of Gibberellin, Vernalization, Photoperiod and Temperature in the Flowering of Endive

“…Gibberellin application can therefore replace, qualitatively, the requirements of endive both for vernalization and for long day. The effects of vernalization an(d of gibberellin in accelerating flowering are additive, as lhas been previously reported (1,5).…”

“…It is clear that responsive biennials, such as henbane (Hyoscyamus niger-L.) and carrot (Dautcus carota L.) must reach a certain stage of (levelopment before either cold or gibberellin is effective in promoting seedstalk elongation and flowering (4,5,9,19). Thus, in carrot a minimum root diameter of about 1 cm must be attained before flowering miay be induiced (4.…”

Effect of Gibberellin on Growth, Flowering and Fruiting of the Earlypak Tomato, Lycopersicum Esculentum.

“…While flowering was accelerated only slightly (3 to 6 days) by treatment with gibberellins, this and other papers (5,10,11,12,13,15,17) (10) and winter annual plants (5) …”

Applied Aspects of the Gibberellins

“…Vernalzzation.-Many publications indicate that applications of gibber ellin to growing plants can replace, nearly quantitatively, effects either of vernalization or of long photoperiods in hastening flowering of rosette plants (55,77,202). Frequently repeated applications of gibberellin to vegetative plants caused seedstalk elongation and promotion of flowering.…”