TAILIEUCHUNG - Báo cáo lâm nghiệp:"Shoot growth and phenology modelling of grafted Stone pine (Pinus pinea L.) in Inner Spain"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài:"Shoot growth and phenology modelling of grafted Stone pine (Pinus pinea L.) in Inner Spain" | Ann. For. Sci. 60 2003 527-537 527 INRA EDP Sciences 2003 DOI forest 2003046 Original article Shoot growth and phenology modelling of grafted Stone pine Pinus pinea L. in Inner Spain Sven Mutke Javier Gordo José Climent Luis Gil . Anatomía Fisiología y Genética Forestal ETS Ingenieros de Montes Universidad Politécnica de Madrid Ciudad Universitaria s n 28040 Madrid Spain Received 26 April 2002 accepted 13 November 2002 Abstract - Shoot elongation flowering phenology branch thickening needle and cone growth was monitored during four years in grafted stone pines in Inner Spain. The relevance of environmental influence on growth and flower regulation in Mediterranean stone pine as nut crop is stressed. Different models of thermal time compute were compared for characterizing phenostage onset shoot and cone growth response to temperature. Non-linear regression models for relative length of preformed shoots and relative cone diameter were fitted in thermal-time scale. Shoot-growth timing was characterized by a common degree-day sum between years. Correlation of June rainfall with shoot length and flower bearing in the next year and with current needle and branch diameter growth was highly significant. Also summer shoots and a second female flowering occurred occasionally in leader branches in dependence on June rainfall but cone-setting failed due to the absence of pollen. Phenological model of the variation between years were consistent with observations in mature non-grafted stone pines. stone pine Pinus pinea growth and flowering phenology phenology modelling growing-degree-days Résumé - Modélisation de la croissance des pousses et de la phénologie du Pin pignon greffe Pinus pinea L. en Espagne Centrale. L allongement des pousses la phénologie de la floraison l épaississement des branches et le développement des aiguilles et des cônes ont été suivis pendant quatre ans chez des pins pignon greffés dans une plantation située en Espagne centrale. L influence

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