Breeding strategy for the Cedrela genus in Argentina

GRIGNOLA, JOSEFINA; BALDUCCI, EZEQUIEL; TRAPANI, ADRIAN; SARAVIA, PABLO; FEYLING, MARIO; GATTO, MIGUEL; CUELLO, ROBERTO; PEREZ, GONZALO; RIOS, LILIANA; RUIZ, VERÓNICA; MELONI, DIEGO; SAEZ, JULIO; PASTORINO, MARIO

Low Intensity Breeding of Native Forest Trees in Argentina

Springer

Año: 2021; p. 373 - 393

Global climate change requires the development of programs that consider the activerestoration of degraded forests and the use of native trees in afforestation to preservethe natural environment. International commitments like the UN REDD program,the Montréal Process and the Convention on Biological Diversity call for the breedingof species rarely contemplated by large industrial companies. Low-intensity breedingis the most rational strategy for those species: simple but robust, and not dependenton continuously increasing funding, and therefore effective even with a relatively smallbudget. It commonly focuses on high genetic diversity rather than improving economictraits and adaptability rather than productivity. Controlled crosses with full pedigreestypical of high-intensity breeding are replaced by open pollination.This book presents state-of-the-art breeding strategies from the last two decadesfor several forest tree species of prime importance in the natural forests of Argentina.They are distributed in the three main forestry ecoregions of the country: the subtropicaldry forest (Chaco), the subtropical rain forests (Yungas and Alto Paraná rainforests)and the temperate forests of Patagonia. The book also discusses the genetic patternsof the selected species defined using genetic markers together with the analysisof the variation in quantitative traits. Further, it examines the crucial features of theirreproductive biology, such as the mating system and gene flow and describes the currentbreeding programs. Lastly, it presents the latest developments in genetic resources andtheir emerging applications, concluding with some reflections and perspectives relatedto the conditioning imposed by climate change.