The application of gibberellic acid (GA3) to the whole loquat tree from mid-May to early June and from early August to the onset of ﬂowering, signiﬁcantly reduced the number of premature ﬂowering shoots per current shoot and per m3 of canopy, and so reduced the total number of panicles per m3 of canopy. The number of vegetative shoots per m3 of canopy was also signiﬁcantly reduced by applying GA3. The response depended on the concentration applied and produced optimal results at 50mg l − 1.Differences in the number of ﬂowers per panicle and leaves per shootwere not signiﬁcantlymodiﬁed by the treatment. Nevertheless, GA3 applied directly to the developing apex near to ﬂower differentiation reduced the number of ﬂowers per panicle by 25–35% and without modifying the morphological characteristics of the panicle. Results suggest that less sprouting of lateral buds was largely responsible for the reduction in ﬂowering intensity caused by GA3. Best treatments reduced thinning costs (60%, approximately) of premature ﬂowering shoots, slightly increased fruit diameter and signiﬁcantly improved fruit colour and juice quality, thus advancing harvest date.
|Data di pubblicazione:||2011|
|Titolo:||Giberellic acid and flower bud development in loquat (Eriobotrya japonica Lindl.)|
|Citazione:||Reig, C., Farina, V., Volpe, G., Mesejo, C., Martinez Fuentes, A., Barone, F., et al. (2011). Giberellic acid and flower bud development in loquat (Eriobotrya japonica Lindl.). SCIENTIA HORTICULTURAE, 129, 27-31.|
|Digital Object Identifier (DOI):||10.1016/j.scienta.2011.02.017|
|Settore Scientifico Disciplinare:||Settore AGR/03 - Arboricoltura Generale E Coltivazioni Arboree|
|Appare nelle tipologie:||1.01 Articolo in rivista|