TAILIEUCHUNG - Báo cáo khoa học: "breeding strategy for cork quality"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: breeding strategy for cork quality. | 444s Ann Sci For 1993 50 Suppl 1 444S-447S Elsevier INRA Note Quercus suber L breeding strategy for cork quality M d Alpuim Ml Roldão Estaẹão Florestal Nacional R do Borja n 2 1300 Lisbon Portugal Summary According to official statistics cork oak Quercus Suber L occupies about 670 000 ha mainly distributed to the south of the Tagus River. This represents about 22 of the country s forest area 8 of its total area and produces about 52 of the total cork production which amounts to 307 500 tonnes. In face of its importance and to avoid a decrease in the area of the species and the quality of cork it is urgent to introduce effective silvicultural and breeding techniques. The aims of this paper are to analyze the breeding programs for cork oak in which the Forest Research station EFN is involved which are concerned with mass selection vegetative propagation and progeny tests. These breeding programs must be very specific because of the characteristics of cork oak. Quercus suberI cork quality breeding strategy vegetative propagation Resume strategic d amelioration génétique de Ouercus suber L. D apres les statistlques offi-cielles le chêne liège Quercus suber L occupe une surface approximative de 670 000 ha au Portugal. Son aire principalement répandue au sud du Tage represents 8 de la superticie totale du pays et 22 de la surface forestiere. La production du Portugal represents 52 ds la production mondials solt 307 500 tonnes par an. Compte tenu de importance économique de I espece et des risques de reduction de la quantité et de la qualité du liège produit II est devenu urgent de dévelop-per des techniques sylvlcoles efficaces et de mettre en place un programme d amelioration généti-que. L objectif de cet article est de decrire le programme d amelioration mené par I EFN station de recherches ỉorestières . II préconise la selection massale la multiplication vegetative et la mise en place de tests de descendances. Le programme d amelioration doit prendre en compte les .

• Báo cáo khoa học
• Báo cáo lâm nghiệp hay
• cách trình bày báo cáo
• báo cáo lâm nghiệp
• công trình nghiên cứu lâm nghiệp
• tài liệu về lâm nghiệp