ISHS Acta Horticulturae 291: III International Mango Symposium
STUDIES ON INDUCTION OF SECONDARY INFLORESCENCES BY DEBLOSSOMING TO DELAY FLOWERING IN MANGO TREES |
| Authors: | M. Issarakraisila, J.A. Considine |
| Abstract:
Primary inflorescences from bud-burst to fully expanded stages of mango trees variety 'Kensington Pride' grown in south Western Australia (latitude 31° 20' S), were deblossomed by hand on September 2 or September 12. Removal of inflorescences on September 2 delayed the time of anthesis by 5 weeks. The average number of secondary (lateral) inflorescences developed per shoot was 2.7 which was significantly greater than the original number of inflorescences (1.6 per shoot). The period of anthesis of the new inflorescences was delayed for six weeks when the primary inflorescences were removed on September 12, ten days later. In this case, the average number of inflorescences per shoot (1.7) was not significantly greater than that of unpruned trees. Observation on pruned shoots showed that pruning at an early stage of inflorescence development produced the greatest return bloom. Return bloom on individual shoots was also positively correlated with shoot vigour as measured by number of growth flushes per shoot. | |
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