Species without current breeding relevance but high economic value: Acacia caven, Acacia aroma, Acacia visco, Prosopis affinis, Prosopis caldenia and Gonopterodendron sarmientoi

Abstract

This chapter gathers six species that have been extensively used from the natural forest, but that are not included in any domestication program yet. These species from the Chaco region belong to genera Acacia, Prosopis and Gonopterodendron. Main characteristics of the different species such as botanical, ecological and usage features (timber and non-timber forest products) are described. Natural range of each species is also depicted. The state of knowledge of the molecular genetic diversity and reproductive biology is shown together with the available information about the mating system. Landscape genetic structure analyses among populations of different Acacia species revealed high levels of differentiation. Experiences of germination and plantation, although scarce, give promising results. Special sampling methods for conservation, management and deployment are discussed together with particular genetic considerations for their use in restoration programs. We call attention to the relevance of these species for their future inclusion in domestication efforts.