TAILIEUCHUNG - Báo cáo khoa học: "The effect of various seed pretreatments to improve germination in eight indigenous tree species in the forests of Cameroon"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: The effect of various seed pretreatments to improve germination in eight indigenous tree species in the forests of Cameroon. | 679 Ann. For. Sci. 56 1999 679-684 Inra Elsevier Paris Original article The effect of various seed pretreatments to improve germination in eight indigenous tree species in the forests of Cameroon Pierre Marie Mapongmetsema Bahiru Dugumab c Bernard Aloys Nkongmeneckd Eric Selegnye a University of Ngaoundere Faculty of Science PO Box 454 Ngaoundere Cameroon bIRAD ICRAF Project PO Box 2067 Yaounde Cameroon c 3125 Eccles Appartment n Ogden UI 84403 USA d University of Yaounde I Faculty of Science PO Box 812 Yaounde Cameroon e University of Rouen PO Box 76821 Saint-Agnan France Received 28 December 1998 accepted 12 April 1999 Abstract - Techniques were tested for improving germination in eight tree species indigenous to Cameroon forests. Manual scarification was the most efficient treatment for all species although a significant interaction between treatment and species was found. Only one species was sensitive to all treatments. The use of sulphuric acid was not an effective alternative to manual scarification. 1999 Inra Editions scientifiques et medicales Elsevier SAS. scarification boiling water sulphuric acid sowing depth Resume - Effet de divers prétraitements sur 1 amelioration de la germination de huit essences locales des forets camerounaises. Des études ont été menées sur la germination de huit essences agroforestieres indigenes des forets camerounaises. La scarification manuelle était le meilleur traitement pour toutes les espèces bien qu il existait une interaction significative entre traitement et espèce. Une seule espèce a été sensible à tous les traitements. L utilisation de 1 acide sulfurique n a pas été une alternative effective à la scarification manuelle. 1999 Inra Editions scientifiques et medicales Elsevier SAS. scarification eau bouillante acide sulfurique profondeur de semis 1. Introduction Rapid population growth and demands for increases in land production especially from agriculture have led to a rapid disappearance of tropical rain forests and

• 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