6533b86ffe1ef96bd12cdfce
RESEARCH PRODUCT
Millerandage and flower abscission in ‘Grillo’, ‘Frappato’ and ‘Nero d’Avola’ grapevines: Some probable causes
Gianniantonio DominaFilippo ScafidiAntonino PisciottaMaria Gabriella Barbagallosubject
0106 biological sciencesOvuleShot berry04 agricultural and veterinary sciencesBiologyHorticulture01 natural sciencesSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeHorticultureAbscissionPollen germinationStamenSettore BIO/03 - Botanica Ambientale E Applicata040103 agronomy & agriculture0401 agriculture forestry and fisheriesCoulure010606 plant biology & botanydescription
Some Sicilian cultivars, in particular vintage, showed a high percentage of flower abscissions and shot berries. In this paper, to understand these phenomena, some aspects of the flower morphology of three Sicilian cultivars (two black: ‘Nero d’Avola’ and ‘Frappato’; and one white: ‘Grillo’) was studied. The number of stamens, ovule adherence to the ovary wall and pollen germination were evaluated using standard light microscopy. At harvest, seed number was counted on 30 berries per cultivar. The percentage of six stamens was lowest in ‘Frappato’ and highest in ‘Grillo’. The ovule adherence to the ovary wall was highest in ‘Frappato’ and lowest in ‘Nero d’Avola’. The percentage of pollen germination and seed number was high in ‘Frappato’ while low in ‘Grillo’. Five or six stamens were found in all cultivars. These results could partially explain the different bunch density in ‘Nero d’Avola’, ‘Grillo’ and ‘Frappato’.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-12-01 |