The Php gene is not a resistance source in cuban tobacco

Article Sidebar

PDF (Español (España)) HTML (Español (España)) EPUB (Español (España)) XML_JATS (Español (España))
Published: Mar 31, 2019
Keywords:
molecular marker, Nicotiana plumbaginifolia, cultivars, genetic breeding

Main Article Content

Javier Martínez-Pacheco
Instituto de Investigaciones del Tabaco
María del Carmen Castro-Férnandez
Instituto de Investigaciones del Tabaco
Angélica González-Toledo
Universidad de La Habana
Verónica Toledo-Sampedro
Instituto de Investigaciones del Tabaco

Abstract

The “black shank” is one of the main diseases that affect the commercial plantations of tobacco in the world. The identification of tobacco genes involved in resistance to the disease, as well as its introgression in commercial cultivars, constitutes a major challenge at present for the genetic improvement programs in Cuba. The information on the "pedigree" of the Cuban cultivars is scarce and sometimes erroneous, so it is important to determine with molecular tools the sources of resistance to the black shank in Cuba's commercial tobacco. The aim of this work was to determine the presence of the Php gene, as a source of monogenic resistance to the disease in 29 tobacco cultivars through the use of a specific molecular marker. It was shown that the Php gene was absent in all cultivars and that it has not been introduced through improvement programs for years. It is important to introduce the Php gene in new cultivars of Cuban tobacco through gene-pyramiding schemes that allow their combination with other sources of polygenic resistance to make the resistance more durable and having a wide spectrum.

Article Details

How to Cite
Martínez-Pacheco, J., Castro-Férnandez, M. del C., González-Toledo, A., & Toledo-Sampedro, V. (2019). The Php gene is not a resistance source in cuban tobacco. Cultivos Tropicales, 40(1), a12-e12. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/1501
Issue
Vol. 40 No. 1 (2019): enero-marzo
Section
Short Communication

Those authors who have publications with this journal accept the following terms of the License Attribution-NonCommercial 4.0 International (CC BY-NC 4.0):

You are free to:

  • Share — copy and redistribute the material in any medium or format
  • Adapt — remix, transform, and build upon the material

The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms:

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

The journal is not responsible for the opinions and concepts expressed in the works, they are the sole responsibility of the authors. The Editor, with the assistance of the Editorial Committee, reserves the right to suggest or request advisable or necessary modifications. They are accepted to publish original scientific papers, research results of interest that have not been published or sent to another journal for the same purpose.

The mention of trademarks of equipment, instruments or specific materials is for identification purposes, and there is no promotional commitment in relation to them, neither by the authors nor by the publisher.