ISHS Acta Horticulturae 356: II International Symposium on Olive Growing
STUDIES ON SELECTION OF OLEA EUROPAEA L. CV. NEGRINHA |
| Authors: | F.A. Leitão, J.F. Serrano, M.F. Potes, M.I. Henriques, F.T. Rei |
| Abstract:
Olea europaea L. cv. Negrinha is a table olive that is widespread and of significant economic importance in the province of Trás-os-Montes, northeast of Portugal. Beginning in 1987 we initiated an yearly survey in five orchards, aiming at selecting individual trees showing high yield, high flesh/stone ratio of fruit, as well as being virus-free. It was found, as diagnosed by ELISA tests that 10% of the marked trees, in the five orchards under study, were infected with Strawberry latent ringspot nepovirus (SLRV), 6% with Cucumber mosaic cucumovirus (CuMV) and 5% with Cherry leaf roll nepovirus (CLRV). Accumulated yield over a six years period and the analysis of average flesh/stone ratios, allowed the selection of highly productive individual trees in each orchard, which are being vegetatively propagation as potential “selected clones”. | |
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