Resumo

RIMIERI, P. La estructura genética de poblaciones de plantas condiciona la interpretación de parámetros y su alcance en caracteres ecofisiológicos. BAG, J. basic appl. genet. [online]. 2013, vol.24, n.2, pp.5-10. ISSN 1852-6233.

It is almost a constant in the ecophysiology papers that, explicitly or implicitly, the genetic structures of the studied material were clearly present as sources of tolerance (germplasm), contrasting materials (genotypes) or simply as cultivars. The "genetic structure" of a population refers to the type, amount and distribution of genetic variation present in the population and it is expressed in terms of gene or genotype frequencies. There are five types of cultivars (populations, synthetic, pure lines, hybrids and clones) considering that all commercial varieties fit into any of these five types or their variants. The objective of this work was to analyze the ecophysiological characters studied in the major crops and their scope and limitations in relation to the genetic structure of populations. An ecophysiologist who studies physiological characters or interactions of the crop with environmental factors, should bear in mind these genetic structures when choosing materials (morphological types, cultivars or genotypes) and when he/she reaches his/her conclusions and makes recommendations, since they will determine the scope of the study. Likewise, the contributions of ecophysiology to describe classify and explain how plants perform in a particular situation and with a given genetic structure are analyzed.

Palavras-chave : Genetic structure; Ecophysiological characters; Plant populations; Cultivated varieties.

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