The principal aims of this work were to characterize the chestnut germplasm grown in Piedmont and investigate its genetic structure. Sixty-eight grafted chestnut trees were evaluated using 10 SSRs (simple sequence repeats) loci and 20 morphological descriptors. Thirty-six different genotypes were identified; the analysis of the genetic structure of this germplasm revealed that four gene pools contributed to the formation of the population sampled . In general, cultivars tended to group into a main gene pool on the basis of their prevalent use and growing area. These results are substantially in agreement with those of the cluster analysis that was carried out to estimate the genetic relationships among the cultivars. Morphological analyses showed large variation of traits among the individuals, related with the market destination of the nuts and useful for cultivar and clonal selection. Discriminant analysis was applied to find a correlation between genetic and morphological data: nut and leaf shape, nut hairness and stamen tipology resulted to be the most discriminant traits associated with the genetic structure.

Genetic and morphological characterization of chestnut (Castanea sativa Mill.) germplasm in Piedmont (north-western Italy)

TORELLO MARINONI, Daniela;BELTRAMO, CHIARA;BOCCACCI, PAOLO;BOUNOUS, Giancarlo;BOTTA, Roberto
2013-01-01

Abstract

The principal aims of this work were to characterize the chestnut germplasm grown in Piedmont and investigate its genetic structure. Sixty-eight grafted chestnut trees were evaluated using 10 SSRs (simple sequence repeats) loci and 20 morphological descriptors. Thirty-six different genotypes were identified; the analysis of the genetic structure of this germplasm revealed that four gene pools contributed to the formation of the population sampled . In general, cultivars tended to group into a main gene pool on the basis of their prevalent use and growing area. These results are substantially in agreement with those of the cluster analysis that was carried out to estimate the genetic relationships among the cultivars. Morphological analyses showed large variation of traits among the individuals, related with the market destination of the nuts and useful for cultivar and clonal selection. Discriminant analysis was applied to find a correlation between genetic and morphological data: nut and leaf shape, nut hairness and stamen tipology resulted to be the most discriminant traits associated with the genetic structure.
2013
9
4
1017
1030
cultivar identification; morphological traits; simple sequence repeat (SSR); genetic structure
Daniela Torello Marinoni; Aziz Akkak; Chiara Beltramo; Paolo Guaraldo; Paolo Boccacci; Giancarlo Bounous; Anna Maria Ferrara; Andrea Ebone; Elena Viotto; Roberto Botta
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/136139
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