Congressi Nazionali SISEF

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Presentazione orale

Lauteri M, Monteverdi MC, Scartazza A, Augusti A, Brugnoli E

Differenziazione fisiologica di ecotipi mediterranei ed orientali di Castanea sativa Mill.

Riassunto: The natural variability of European chestnut was studied during the past decade concerning both population genetic and stress physiology. Joint genetic-physiological studies recently addressed this variability to the adaptivness of chestnut to environments with substantial thermo-pluviometric differences. Particularly, wide variability was found among populations spread along a Turkish transect from the Black Sea coast to the Mediterranean coast. Along this transect climate gradually changes from sub-humid to sub-arid. Eastern populations were compared to Mediterranean ones in a common site in Italy to study the physiological basis of a differential adaptivness to different climates. This plant collection was analysed for carbon isotope discrimination (D , a parameter related to plant water-use efficiency), photosynthesis, above ground biometry and phenology. The Mediterranean drought adapted chestnut populations showed higher delta (lower water-use efficiency), higher photosynthesis, higher mesophyll conductance, lower juvenile growth, higher long term growth and higher earliness of bud burst with respect to the Eastern chestnut populations. Furthermore, recent researches pointed out variability of both plant hydraulic conductance and stomatal sensitivity to transpirative demand, comparing contrasting populations. Finally, biodiversity in the expression of adaptive traits is discussed as a whole to underline different adaptive strategies which identify two forms of European chestnut: namely the Mediterranean ecotype and the eastern one.

Citazione: Lauteri M, Monteverdi MC, Scartazza A, Augusti A, Brugnoli E (1999). Differenziazione fisiologica di ecotipi mediterranei ed orientali di Castanea sativa Mill.. In: II Congresso Nazionale SISEF “Applicazioni e prospettive per la ricerca forestale italiana“ (Centro Fieristico, Bologna 20-22 Ottobre 1999), Abstract-book, Contributo #c02.2.7. - [online] URL: https://congressi.sisef.org/?action=paper&id=1141

Dettagli

Congresso II Congresso Nazionale SISEF
“Applicazioni e prospettive per la ricerca forestale italiana”
Centro Fieristico, Bologna 20-22 Ottobre 1999
Collocazione c02.2.7 (#)
Sessione Sessione 02
Moderatore/i Giuseppe Scarascia Mugnozza
Data Oct 21, 1999
Ora 09:00-13:30
Luogo -
Info Autori
(*): speaker

M Lauteri
Istituto per l’Agroselvicoltura, CNR, Porano (TR), Italy
Italy

MC Monteverdi
Istituto per l’Agroselvicoltura, CNR, Porano (TR), Italy
Italy

A Scartazza
Istituto per l’Agroselvicoltura, CNR, Porano (TR), Italy
Italy

A Augusti
Istituto per l’Agroselvicoltura, CNR, Porano (TR), Italy
Italy

E Brugnoli
Istituto per l’Agroselvicoltura, CNR, Porano (TR), Italy
Italy