Physiology of Gibberellins in Relation to Floral Initiation and Early Floral Differentiation

The involvement of gibberellins (GAs) in flowering of a wide variety of higher plants has been reviewed by Zeevaart,1 Pharis and King,2 Bernier,3 Looney and Pharis,4 and Pharis et a1.5 In the six-volume Handbook of Flowering edited by Halevy,6 most chapters detail effects, or lack thereof, of exogenously applied GAs on flowering. For conifers, reviews by Hashizume,7 Dunberg and Oden,8 Pharis and Kuo,9 Pharis and King,2 Nagao et al.,10,11 Pharis and Ross,12 and Pharis et al.13 provide ample coverage of both applied and more basic approaches to the flowering physiology of this group of plants.