Abstract

RESENDE, Kátia Ferreira Marques de; SANTOS, Fernanda Motta da Costa; D. DIAS, Marco Aurélio  and  RAMALHO, Magno Antônio Patto. Implication of the changing concept of genes on plant breeder's work. Crop Breed. Appl. Biotechnol. (Online) [online]. 2011, vol.11, n.4, pp. 345-351. ISSN 1984-7033.  http://dx.doi.org/10.1590/S1984-70332011000400008.

The recent genome sequencing of some species has accumulated evidence that for a large number of traits, the control and action of genes are far more complex than previously thought. This article discusses possible implications of new insights into the gene concept on the work of plant breeders. Apparently, the successful application of biotechnological techniques is not as simple as once assumed. The evident changes in the available concept of genes confirmed what the past experience had shown, i.e, selection should focus on the phenotype, under the same conditions as the plant is to be cultivated in. Advanced vocational training of plant breeders must be continuously maintained, focusing on phenotype-based selection in as accurate as possible experiments.

Keywords : plant breeding; genetics; molecular marker; transgenic.