Does clones combination have any advantage in comparison to monoclonal systems? Silvicultural alternatives for Salicaceae, based on the review of previous experiences
Forest plantations with different trees and purposes were traditionally developed with seminal seedlings. Actually, the most important planted tree species can be propagated by vegetative methods, so clonal silviculture has high possibilities to grow. Salicaceae plantations are established by cuttings of genetically improved trees. This determines that poplars and willows are produced under clonal silviculture systems. Furthermore, at the region of Paraná River Delta, stands are monoclonal and Populus deltoides ‘Australiano 129/60’ is the most widespread clone. These forest systems are unstable and there is a productive risk associated to emergence of pests, diseases and extreme climatic conditions. Thus, monoclonal silviculture model has some ecological and productive disadvantages. Reducing genetic diversity could threat the aims of the forest plantations and it is important to consider aspects related to biodiversity when plantations are planned. Clone combination in the same stand can be useful to increase genetic diversity, because tree species are highly diverse at both inter and intraspecific level. Mixed clonal plantations can favor to decrease the impact of productive activities on the environment, spatially distribute soil nutrient demand, increase genetic diversity and enhance stand yields.The aim of this review is to analyze previous experiences in clonal silviculture and plantation in mixed stands as a framework to propose silvicultural alternatives for Salicaceae production in Paraná River Delta, Argentina.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
2020
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| Online Access: | https://revistas.unlp.edu.ar/revagro/article/view/10918 |
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