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Eliezer E. Goldschmidt

, whereas GA antagonists promoted it ( Monselise et al., 1966 ). Gibberellins were assumed therefore to play an inhibitory role in the natural regulation of citrus flowering; the environmental cues, drought and cool temperatures, presumably interfere with

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Norman B. Best, Xingang Wang, Scottie Brittsan, Eric Dean, Seth J. Helfers, Ryan Homburg, Mariah L. Mobley, Tiffeny L. Spindler, Bofan Xie, Menglu Zhang, Paul M. Hasegawa, Robert J. Joly, David Rhodes, and Brian P. Dilkes

’. Fig. 1. Plant height and stem diameter of sunflower cultivars Sunspot and Mammoth Grey treated with gibberellin A 3 (GA 3 ) or uniconazole (UCZ). Seedlings were allowed to grow for 14 d, and were then treated with a soil drench application of 100 µ m

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Torrance R. Schmidt, Don C. Elfving, James R. McFerson, and Matthew D. Whiting

United States to improve return bloom after moderate to heavy crops. Floral initiation inhibitors, specifically gibberellins, show potential as crop load management tools by reducing return bloom after light crops. Literature widely reports the effects of

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Rufaro Madakadze, Ellen M. Chirco, and Anwar A. Khan

Cornell International Institute for Food, Agriculture, and Development. We gratefully acknowledge gifts of Micro-Cel E from Manville Products Corporation, Denver; expanded vermiculite from W.R. Grace&Co., Cambridge, Mass: and gibberellin A 4+7 from

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Steven McArtney, Duane Greene, Terence Robinson, and James Wargo

temperatures at the full bloom stage, when air temperatures of 28 and 25 °F are predicted to kill 10% and 90% of the blooms, respectively ( Ballard et al., 1998 ). Foliar gibberellin (GA) sprays during bloom increase fruit set in pear ( Pyrus communis ) by

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Jiuxing Lu, Weiru Yang, and Qixiang Zhang

Gibberellins are phytohormones that promote important aspects of growth, such as seed germination, leaf expansion, stem elongation, flowering, and fruit development ( Davies, 1995 ). In woody plants, many GA-mediated processes are agriculturally

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Tory Schmidt, Don C. Elfving, James R. McFerson, and Matthew D. Whiting

extracts have subsequently identified a variety of endogenous gibberellins ( Ramirez, 1995 ) and exogenous GAs have been shown to reduce flowering in apple the season after application ( Bertelsen and Tustin, 2002 ; McArtney, 1994 ; Meador and Taylor

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Olga A. Kildisheva, R. Kasten Dumroese, and Anthony S. Davis

: scarification, gibberellic acid, and water. This experiment was conducted to evaluate the effects of gibberellin on germination. Seeds were subject to eight treatments: 1) control (dry, unaltered seeds); a 2) mechanical scarification (previously described); 3

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Marisa Y. Thompson, Jennifer J. Randall, Dawn VanLeeuwen, and Richard J. Heerema

., 2019 ; Wood, 1991 , 2011b ). For example, in a parallel study of the same shoots as those described in the current study, 100 mg⋅L −1 gibberellin GA 3 treatment on fruiting shoots increased the number of flowers during the following year by 125

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Bruce W. Wood

(ANOVA) at P ≤ 0.05 with treatment means separated by Student's t test. Expt. 2: Influence of gibberellin on flowering of whole trees. Phase 1: Gibberellin 3 and return flowering of ‘Oconee’ trees. This study was initiated using ‘Oconee’ trees with a