ISHS Acta Horticulturae 702: V International Pineapple Symposium
DELAYING NATURAL FLOWERING IN PINEAPPLE |
| Authors: | C.-H. Lin, C.-S. Kuan, Y.-M. Hsu, M.-L. Lin, H.-T. Hsu, C.-W. Yu, D.P. Bartholomew |
| Keywords: | Ananas comosus, aviglycine, pineapple, natural flowering |
| DOI: | 10.17660/ActaHortic.2006.702.7 |
| Abstract:
Natural induction of flowering of pineapple (NI) is an important problem for growers, especially where cultivars of high sensitivity are grown at subtropical latitudes, e.g. Taiwan (22-267°N lat.). Aviglycine, an inhibitor of ethylene biosynthesis, was applied as a foliar spray to evaluate its potential to prevent NI in one-year-old pineapple. In the 2001/2002 season, 100 mg•L-1 of aviglycine applied on Nov. 9 and Dec. 1 had no effect on NI of ‘Tainon 18’ while 500 mg•L-1 aviglycine reduced it from 95.0% in the control to 51.3% on Feb. 25, 2002. In the 2002/2003 season, 500 mg•L-1 of aviglycine was applied on Nov. 10 and Dec. 1 and 20, 2002. On Mar. 28, 2003, there was 95.8% NI in the control, 64.6% at 250 and 375 mg•L-1 aviglycine, and 50% at 500 mg•L-1. For the 2003/2004 season, ‘Tainon 17’ was treated at 10, 15, or 20 day intervals with 500 mg•L-1 aviglycine between Nov. 10 and Dec. 25, 2003. On March 30, 2004, there was 82.5% NI in the control, 6.6% for the 10-day application interval (five applications), 18.3% for the 15-day interval (four applications), and 19.1% for the 20-day interval (three applications). Aviglycine provided good control of NI of pineapple for nearly three months after the last treatment was applied. | |
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