Breeding strategy for the Cedrela Genus in Argentina

Abstract

Three species from the Yungas (Cedrela balansae, C. angustifolia, C. saltensis) and one from the Alto Paraná Rainforest (C. fissilis) represent the genus in Argentina. In this chapter, we present the state-of-the-art in their domestication, including afforestation experiences in block and in enrichment strips. The moth called "Meliaceae borer" is the main natural threat for the cultivation of the genus. Its population dynamics and control treatments are described. The adaptive variation of the genus has been studied through the analysis of physiological, chemical, and growth traits. Species and provenances were evaluated in relation to water stress and low temperatures. First steps toward the breeding of the genus in Argentina have been initiated with the establishment of a network of species, provenance, and progeny field trials. In addition, plus trees were selected in the natural forest and propagated by grafting. Clonal seed orchards of C. balansae, C. angustifolia, and C. fissilis were installed.