Title:	Genetic improvement of Eucalyptus benthamii at Embrapa.
Authors:	SANTOS, P. E. T. dos PALUDZYSZYN FILHO, E. PINTO JUNIOR, J. E.
Affiliation:	PAULO EDUARDO TELLES DOS SANTOS, CNPF; ESTEFANO PALUDZYSZYN FILHO, CNPF; JOSE ELIDNEY PINTO JUNIOR, CNPF.
Date Issued:	2009
Citation:	In: CONGRESO FORESTAL MUNDIAL, 13., 2009, Buenos Aires. Desarrollo forestal: equilibrio vital. Argentina: FAO, 2009.
Description:	Eucalyptus benthamii has been indicated for planting in the Southern Region of Brazil at altitudes ranging from 800- 1,400m normally prone to frosts of up to -6ºC. Technological assessments of its wood (density, calorific power, lignin content) have showed aptitude for energetic purposes. It has been observed a continuous expansion of the planted area during the last five years and recent estimates indicated that 10,000ha are currently occupied by this species. The genetic improvement program carried out by Embrapa has completed 20 years, and the first experimental field (0.5ha) was established at Colombo-PR (25°19’S; 49°09’W; 941m) in 1988. Successive thinnings allowed transforming that area in a “Selected Mother Trees” category of Seed Collection Area, containing 130 plants at present. A second seed production field, originated from the latter, is located in Ponta Grossa-PR (25°09’S; 50°04’W; 880m). This Clonal Seed Production Area (1.09ha, 160 plants) was formed by planting rooted stems of 16 clear-cut trees after selection at the age of eight years for growth rate, stem form and sanity. As the original population (Wentworth Falls-NSW, Australia: 33°48’S; 150°24’E; 150m) exhibits a narrow genetic basis (7-10 trees), Embrapa has decided to make efforts to enlarge it. To do so, 30 progenies from Kedumba Valley-NSW (33°49’S; 150°23’E; 140m), six from Bents Basin-NSW (33°52’S; 150°38’E; 40m) and also seedlots in bulk from Crossley SSO (33°28’S; 145°00’E; 90m) and SSO Barclays Deniliquin (35°01’S; 145°13’E; 100m) were imported from CSIRO in 2005, contributing to achieve an appropriate basis available for the institutional multi-generation recurrent selection program. In order to evaluate the performance of these new introductions, a progeny test was initially established in Ponta Grossa in 2007.
NAL Thesaurus:	Eucalyptus benthamii
Keywords:	Melhoramento genético
Notes:	Resumo.
Type of Material:	Resumo em anais e proceedings
Access:	openAccess
Appears in Collections:	Resumo em anais de congresso (CNPF)