TAILIEUCHUNG - Báo cáo khoa học: "Cutting propagation of Quercus acutissima clones after rejuvenation through serial grafting"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Cutting propagation of Quercus acutissima clones after rejuvenation through serial grafting. | 314s Ann Sci For 1993 50 Suppl 1 314S-318S Elsevier INRA Original article Cutting propagation of Quercus acutissima clones after rejuvenation through serial grafting HKMoon 1 JS Yi 2 Institute of Forest Genetics Forestry Administration Suwon 441-350 2 Department of Forestry College of Forestry Kangweon National University Chooncheon 200-701 Republic of Korea Summary Vegetative propagation of 34- to 67-year-old Quercus acutissima trees was successfully achieved from rooted cuttings. Semi-hardwood ramets which were obtained from the clones established through grafting twice onto the 2-year-old rootstocks showed 60 rooting ranging from 20 to 100 . After grafting only once average rooting frequency was 11 ranging from 0 to 34 using cuttings dipped in 500 ppm indole-butyric acid IBA solution. The rooting medium consisted of equal volumes of peatmoss and perlite. Cuttings were watered by intermittent mist and grown in the greenhouse at 25 3 C for more than 5 weeks. For rooting there was no significant difference between ortet age but marked differences were observed among the clones. Although most of the rooted cuttings did not sprout new buds in the current year they usually produced slowly-growing buds and or revealed plagiotropic growth at the following year. Quercus acutissima rejuvenation I serial grafting semi-hardwood cutting Resume Bouturage de Quercus acutissima après greffage en cascade. La multiplication vegetative de Quercus acutissima âgés de 34 et 67 ans a été réalisée avec succès. Deux generations successives de greffage sur des porte-greffes de 2 ans ont permis d obtenir des boutures semi-ligneuses manifestant un taux d enracinement de 60 variation totale de 20 à 100 . Après ta premiere generation de greffes le taux d enracinement n etait que de 11 0 à 34 les boutures étaient trempées dans de I acide indolbutyrique 500 ppm le substrat était constitué d un melange en quantités égales de tourbe et de perlite. Les boutures étaient élevées sous mist .

• 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