Data di Pubblicazione:
2017
Citazione:
Identification of cork oark characters for phenotypic selection / Monteverdi, M. C.; de Dato, G.; Mulas, M.; Arcadu, M.; Germani, A.; Proietti, R.; Addis, M.; Casula, A.; Maltoni, S.; Ducci, F.. - (2017), pp. 44-44. (Intervento presentato al convegno INTERNATIONAL CONGRESS ON CORK OAK TREES AND WOODLANDS. Conservation, Management, Products and Challenges for the Future. 3° National Congress of Cork. tenutosi a Sassari nel 25-26 maggio 2017).
Abstract:
Global change effects can determine major changes in species distribution and
productivity. In the Mediterranean region of the severity of hot and dry periods
is growing and an increased frequency of extreme events and a major
vulnerability of natural ecosystems is evident. Cork oak (Quercus suber L.) is
widely spread in the West Mediterranean region and its economic and social is
important. Managing properly genetic resources is fundamental to preserve
diversity and to increase the resilience of species, that assumes major
importance in so sensible and delicate social, economic and ecological systems.
This study is aimed to consider the phenotypic selection of basic materials for
cork traits. Therefore, not only tree shape or wood production phenotypic traits
as usual in most forest tree breeding programmes (EU Directive 1999/105/CE). The innovative idea is to introduce traits related to cork quality in the European
FRM legislation. Cork samples (100 cm2) were collected from almost 30
mature trees in candidate seed stands in the stripping season. Trees were
randomly sampled in three subareas/stand along an altitudinal gradient and
characterized phenotypically for growth and shape traits. Traits were measured
on Cork specimen keeping as a reference the main commercial requirements.
Fresh and dry weigh were measured to estimate the percentage of empty volume
determinate by slits, patchy, and insect damages. Damaged areas by slits,
patchy, and insects were measured in transverse an tangential sections. Image
analysis techniques were applied to measure lenticels (ImageJ program - image
processing and analysis in JAVA) as well as outer and inner cork surface were
measured for roughness and porosity. Data were managed to perform the
multivariate Factor Analysis to identify the most significant cork traits to for
seed stand selection and knowing the cork quality variation in Sardinian stands.
productivity. In the Mediterranean region of the severity of hot and dry periods
is growing and an increased frequency of extreme events and a major
vulnerability of natural ecosystems is evident. Cork oak (Quercus suber L.) is
widely spread in the West Mediterranean region and its economic and social is
important. Managing properly genetic resources is fundamental to preserve
diversity and to increase the resilience of species, that assumes major
importance in so sensible and delicate social, economic and ecological systems.
This study is aimed to consider the phenotypic selection of basic materials for
cork traits. Therefore, not only tree shape or wood production phenotypic traits
as usual in most forest tree breeding programmes (EU Directive 1999/105/CE). The innovative idea is to introduce traits related to cork quality in the European
FRM legislation. Cork samples (100 cm2) were collected from almost 30
mature trees in candidate seed stands in the stripping season. Trees were
randomly sampled in three subareas/stand along an altitudinal gradient and
characterized phenotypically for growth and shape traits. Traits were measured
on Cork specimen keeping as a reference the main commercial requirements.
Fresh and dry weigh were measured to estimate the percentage of empty volume
determinate by slits, patchy, and insect damages. Damaged areas by slits,
patchy, and insects were measured in transverse an tangential sections. Image
analysis techniques were applied to measure lenticels (ImageJ program - image
processing and analysis in JAVA) as well as outer and inner cork surface were
measured for roughness and porosity. Data were managed to perform the
multivariate Factor Analysis to identify the most significant cork traits to for
seed stand selection and knowing the cork quality variation in Sardinian stands.
Tipologia CRIS:
4.2 Abstract in Atti di convegno
Keywords:
phenotypic selection, breeding, cork quality, Sardinian cork oak, Quercus suber
Elenco autori:
Monteverdi, M. C.; de Dato, G.; Mulas, M.; Arcadu, M.; Germani, A.; Proietti, R.; Addis, M.; Casula, A.; Maltoni, S.; Ducci, F.
Link alla scheda completa:
Titolo del libro:
INTERNATIONAL CONGRESS ON CORK OAK TREES AND WOODLANDS. Conservation, Management, Products and Challenges for the Future. 3° National Congress of Cork.