c6.4.14 – Phenotipic plasticity of adaptive traits in Populus spp.

Sabatti M (1), Gaudet M (1), Paolucci I (1), Beritognolo I (1), Ricciotti L (1), Salani F (1), Fabbrini F (1), Baldasso M (1), Bastien C (3), Marron N (4), Dillen S (4), Taylor G (5), Rohde A (6), Scarascia Mugnozza G (1-2)

(1) DISAFRI, Univ. Tuscia, Via de Lellis, 01100 Viterbo, Italy; (2) IBAF-CNR, Italy; (3) INRA – UAGPF, France; (4) Dept. of Biology, Univ. Antwerp, Belgium; (5) School Biol. Sciences – Univ. Southampton, UK; (6) VIB – Ghent Univ., Belgium
Collocazione: c6.4.14 – Tipo Comunicazione: Presentazione orale
6° Congresso SISEF *
Sessione 4: “Sessione 4: Biodiversità, cambiamenti climatici, monitoraggio” *

Contatto: Maurizio Sabatti (sabatti@unitus.it)

Abstract: Poplars have several advantages as a model system, including rapid growth, prolific sexual reproduction, ease of cloning, small genomic size, facile transgenesis and tight coupling between physiological traits and biomass productivity. Taking advantage of germplasm collections from Italian natural populations of P. alba and P. nigra genotypes were selected on the basis of their origin and for the divergence of adaptive traits to be used as parents to produce F1 full sib families. Two intra-specific F1 families of P. alba and P. nigra were planted at three sites in Europe and two sites in Italy, respectively, within the framework of an EC-funded program (POPYOMICs; http://www.soton.ac.uk/~popyomic/). A randomized block design was defined for the establishment of the experimental plantations for both pedigrees in April 2003. Six complete blocks were used and one replicate of each F1 genotype and of the parents was randomly assigned to each block. The results have shown significant variation of a set of selected morphological and phenological traits for genotypes, sites and GxS interactions across the sites in the two intra-specific full-sib families. Broad sense heritabilities and genetic correlations will be presented for the study traits in relation to the different environments. The obtained results will be discussed introducing the utility of this work for genetic improvement and mapping of QTLs for yield in contrasting sites.

Citazione: Sabatti M , Gaudet M , Paolucci I , Beritognolo I , Ricciotti L , Salani F , Fabbrini F , Baldasso M , Bastien C , Marron N , Dillen S , Taylor G , Rohde A , Scarascia Mugnozza G (2007). Phenotipic plasticity of adaptive traits in Populus spp. . 6° Congresso Nazionale SISEF, Arezzo, 25 – 27 Set 2007, Contributo no. #c6.4.14