Genetic evaluation of English oak provenance tests for high quality seed production. The aim of the work was the evaluation of two provenance trials of English Oak located in Lombardia as seed orchards for the production of hihg quality propagative material. Molecular markers were used to estimate the amount of genetic variability in the original seed stands (Monza and Pumenengo) as well as in the provenance trials. Seeds produced by the latter were also analysed. Progenies of Pumenengo stand showed genetic variability comparable to that of seed stand. To the contrary, progenies of Monza stand showed significant genetic variability reduction, probably due to an uncorrect sampling of the plants from which seeds were collected and used in the provenance trials. Genetic differentiation analysis showed that plots consisting of a low number of plants (i.e. 28 in the Groane trials) are unable to reduce gene flow among different provenances.
Seme di farnia ad elevato valore genetico
MONTELEONE, Ignazio;BELLETTI, Piero
2005-01-01
Abstract
Genetic evaluation of English oak provenance tests for high quality seed production. The aim of the work was the evaluation of two provenance trials of English Oak located in Lombardia as seed orchards for the production of hihg quality propagative material. Molecular markers were used to estimate the amount of genetic variability in the original seed stands (Monza and Pumenengo) as well as in the provenance trials. Seeds produced by the latter were also analysed. Progenies of Pumenengo stand showed genetic variability comparable to that of seed stand. To the contrary, progenies of Monza stand showed significant genetic variability reduction, probably due to an uncorrect sampling of the plants from which seeds were collected and used in the provenance trials. Genetic differentiation analysis showed that plots consisting of a low number of plants (i.e. 28 in the Groane trials) are unable to reduce gene flow among different provenances.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.