Primary growth and morphological markers of interannual growth limits in Cupressaceae from Patagonia |
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Authors: | JAVIER GROSFELD DANIEL BARTHÉLÉMY |
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Institution: | Departamento de Botánica, Universidad Nacional del Comahue, 8400 Bariloche, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); UnitéMixte de Recherche CIRAD-CNRS-INRA-IRD-UniversitéMontpellier 2 'botAnique et bioinforMatique de l'Architecture des Plantes' (AMAP), TA40/PS2, Boulevard de la Lironde, 34398 Montpellier Cedex 5, France |
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Abstract: | The present study shows experimentally that primary growth of the native Patagonian Cupressaceae Austrocedrus chilensis (D. Don) Pic.-Serm et Bizz., Fitzroya cupressoides (Molina) I. M. Johnst. and Pilgerodendron uviferum (D. Don) Florin is potentially continuous. External morphological markers of interannual growth limits have been identified for the main axes of these species after several years of observation. Such limits correspond with axis portions in which internodes are relatively short and leaves have a small distal free end forming an acute angle with the axis. The causality of these results and their utility for studying the productivity, adaptation to different environments, population management and conservation of these threatened species are discussed. © 2004 The Linnean Society of London, Botanical Journal of the Linnean Society, 2004, 146 , 285–293. |
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Keywords: | Austrocedrus Fitzroya morphogenesis Pilgerodendron |
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