Đang chuẩn bị liên kết để tải về tài liệu:
Báo cáo khoa học: "Implementation of conifer somatic embryogenesis in clonal forestry: technical requirements and deployment considerations"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Implementation of conifer somatic embryogenesis in clonal forestry: technical requirements and deployment considerations. | 651 Ann. For. Sci. 59 2002 651-656 INRA EDP Sciences 2002 DOI 10.1051 forest 2002051 Original article Implementation of conifer somatic embryogenesis in clonal forestry technical requirements and deployment considerations Yill-Sung Park Natural Resources Canada Canadian Forest Service Atlantic Forestry Centre PO Box 4000 Fredericton New Brunswick E3B 5P7 Canada Received 16 August 2001 accepted 16 January 2002 Abstract - Cloning of trees using somatic embryogenesis SE could have a major impact on tree breeding and commercial plantation forestry. In conjunction with cryopreservation SE offers an opportunity to develop highly valuable clone lines. Commercial deployment of such genetically tested clone lines in forestry will dramatically increase forest productivity over any available conventional tree improvement techniques. However sufficient technical advances must be made to use SE in clonal forestry. Progress in SE techniques and genetic stability of clones is reviewed using white spruce Picea glauca and eastern white pine Pinus strobus as model species. There are several other issues in implementing clonal forestry. The main concern is managing clonal plantations for optimal genetic gain and diversity. The issues and considerations for selecting appropriate numbers of clones and deployment strategies are discussed. A clonal deployment strategy using a mixture of clones and seedlings is proposed for eastern Canada. somatic embryogenesis cryopreservation genetic stability clonal forestry tree improvement Résumé - Mise en reuvre de l embryogenese somatique des coniferes en foresterie multiclonale exigences techniques et considerations sur son utilisation. Le clonage des arbres réalisé à l aide de l embryogenèse somatique ES pourrait avoir un impact majeur sur l amélioration des arbres et la foresterie commerciale de plantation. L ES utilisée de pair avec la cryoconservation offre la possibilité de développer des li-gnées multiclonales de grande valeur. L utilisation