Data di Pubblicazione:
2012
Citazione:
Olive Fertility as Affected by Cross-Pollination and Boron / A. Spinardi, D. Bassi. - In: THE SCIENTIFIC WORLD JOURNAL. - ISSN 1537-744X. - 2012(2012). [10.1100/2012/375631]
Abstract:
Self-compatibility of local olive (Olea europaea L.) accessions and of the cultivars “Frantoio” and “Leccino” was investigated
in Garda Lake area, northern Italy. Intercompatibility was determined for “Casaliva,” “Frantoio,” and “Leccino,” as well as the
effects of foliar Boron applications (0, 262, 525, or 1050 mg·L−1) applied about one week before anthesis on fruit set, shotberry
set, and on in vitro pollen germination. Following self-pollination, fruit set was significantly lower and the occurrence of shot
berries significantly higher than those obtained by open pollination. No significant effect of controlled cross-pollination over selfpollination
on fruit set and shotberry set was detectable. B treatments increased significantly fruit set in “Frantoio” and “Casaliva”
but not in “Leccino.” B sprays had no effect on shotberry set, suggesting that these parthenocarpic fruits did not strongly compete
for resources allocation and did not take advantage of increased B tissue levels. Foliar B application enhanced in vitro pollen
germination, and the optimal level was higher for pollen germination than for fruit set. Our results highlight the importance of
olive cross pollination for obtaining satisfactory fruit set and the beneficial effect of B treatments immediately prior to anthesis,
possibly by affecting positively the fertilisation process and subsequent plant source-sink relations linked to fruitlet retention.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
A. Spinardi, D. Bassi
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