tailieunhanh - Báo cáo lâm nghiệp: "Effect of storage conditions on post planting water status and performance of Pinus radiata D. Don stock-types"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: Effect of storage conditions on post planting water status and performance of Pinus radiata D. Don stock-types. | Ann. For. Sci. 61 2004 695-704 INRA EDP Sciences 2004 DOI forest 2004060 695 Original article Effect of storage conditions on post planting water status and performance of Pinus radiata D. Don stock-types Amaia MENA-PETITEa José María ESTAViLLOa Miren DUNABEITIAa Begona GONZÁLEZ-MOROa Alberto MUNOZ-RUEDAa Maite LACUESTAb a Departamento de Biología Vegetal y Ecología Facultad de Ciencia y Tecnología Universidad del Pais Vasco EHU Apdo. 644 48080 Bilbao Spain b Departamento de Biologia Vegetal y Ecologia Facultad de Farmacia Universidad del Pais Vasco EHU Apdo. 450 01080 Vitoria Spain Received 7 April 2003 accepted 12 January 2004 Abstract - We examined the post-planting effect of storage on the plant quality and initial survival potential of bare-root BR and soil-plugged root PR of radiata pine seedlings outplanted in wet and dry soils. Seedlings were subjected to planting shock even under well-watered conditions. Although the transpiration rate declined indicating closure of stomata water stress occurred as evidenced by the decline in relative water content RWC and in the leaf water potential. More than 80 of the PR seedlings and only 20 of BR seedlings transplanted in well-watered regimen survived. Regardless of storage conditions and duration seedlings planted under water shortage with a RWC 50 did not survive. According to these results it is not advisable to store radiata pine seedlings for more than 1 week when planting is under drought conditions even if the seedlings have soil around roots PR seedlings . container-grown drought field performance seedling survival transplanting stress Résumé - Effet des conditions de stockage sur l etat hydrique et l etablissement de plantules de Pinus radiata D. Don avec motte et à racines nues. L étude a porté sur l effet du stockage sur la qualité du plant et sur les potentialités de survie initiale de plantules de Pinus radiata D. Don à racine nue BR et avec motte PR replantées dans des sols humides et secs. Les .