Proceedings of the XLV Italian Society of Agricultural Genetics - SIGA Annual Congress

Salsomaggiore Terme, Italy - 26/29 September, 2001

ISBN 88-900622-1-5

Poster Abstract

PRELIMINARY OBSERVATION ON FOUR ACCESSIONS OF OLIVE CULTIVAR MORAIOLO

CIPRIANI M., SCAMOSCI M., CÁCERES M.E., FONTANAZZA G.

Istituto di Ricerche sulla Olivicoltura-CNR, Perugia

M.Cipriani@iro.pg.cnr.it

Moraiolo, polymorphism, morphology, production

In this work we preliminarily observed the performance in the field of four accessions of olive cultivar Moraiolo, previously subjected to AFLP analysis. This analysis showed that only two accessions were genetically identical. Therefore this study wants to check if, in addition to the genetic differences pointed out by AFLP analysis, it is possible to point out differences in fruits and leaves morphology, flower biological characteristics and productive behaviour. The four Moraiolo accessions examined, belonging to IRO-CNR germoplasm collection, come from Tuscany and Umbria regions. The research was carried out in the experimental field set in Spineta area (Perugia). This field was realized according to an experimental design with four randomised blocks where the first production started in 2000 (4° year aged).

Flower samples were picked up during flowering phase in order to estimate the percentages of ovary abortion and pollen viability.

In November fruit harvesting was carried out during changing colour phase; the yield of the different thesis per each block was recorded. Representative samples of fruits and leaves were taken in order to measure the following morphological characteristics: weight, polar and transversal diameter of the drupes and stones, length and width of the leaves. Olive oil was extracted from fruit samples of the different thesis in order to determine the oil content and to make chemical analysis.

As regards the parameters considered any differences was observed among the four accessions of Moraiolo; consequently the polymorphism put in evidence by AFLP analysis is not reflected in phenological characteristics examined, not even in productive performance; the observed polymorphism could be reflected on other agronomical or biological characteristics, often not expressed in the phenotype.