Identification and alternative management of downy mildew in rose

Authors

  • Pablo Israel Álvarez Romero Centro Universitario Tenancingo-Universidad Autónoma del Estado de México. Carretera Tenancingo-Villa Guerrero km 1.5, Tenancingo, Estado de México. CP. 52400. Tel. 01 (714) 1407724
  • Rómulo García Velasco Centro Universitario Tenancingo-Universidad Autónoma del Estado de México. Carretera Tenancingo-Villa Guerrero km 1.5, Tenancingo, Estado de México. CP. 52400. Tel. 01 (714) 1407724
  • Martha Elena Mora Herrera Centro Universitario Tenancingo-Universidad Autónoma del Estado de México. Carretera Tenancingo-Villa Guerrero km 1.5, Tenancingo, Estado de México. CP. 52400. Tel. 01 (714) 1407724
  • Martha Lidya Salgado Siclan Facultad de Ciencias Agrícolas-Universidad Autónoma del Estado de México. El Cerrillo Piedras Blancas, Toluca, Estado de México, CP. 50200. Tel. 01(722) 2965529
  • Daniel Domínguez Serrano Centro Universitario Tenancingo-Universidad Autónoma del Estado de México. Carretera Tenancingo-Villa Guerrero km 1.5, Tenancingo, Estado de México. CP. 52400. Tel. 01 (714) 1407724

DOI:

https://doi.org/10.29312/remexca.v9i8.1715

Keywords:

Peronospora sparsa, potassium phosphite, incidence, severity

Abstract

The downy mildew caused by Peronospora sparsa Berkeley is one of the most important diseases of the rose bush in Mexico, causing 100% losses. Its management is based on fungicides in continuous applications that tend to generate resistant populations. The search for alternatives is indispensable. In the present work, the morphometric and molecular identity of the agent associated with the downy mildew of the rose was confirmed, the effectiveness of the potassium phosphite (K3PO3), chitosan, silicon and mefenoxam was evaluated for the management of the disease and its effect on the length and diameter of floral stem. The study was conducted in summer and fall of 2013 in Tenancingo, State of Mexico. The morphometric characterization was carried out under a compound and scanning electron microscope. For molecular characterization, the ribosomal DNA of the ITS region was amplified with primers PS3 and PS1. The treatments were: potassium phosphite (K3PO3), chitosan, silicon, mefenoxam and control and were applied at weekly intervals. The experimental design was randomized blocks and the mean comparison was by Tukey (α= 0.05). Morphometric and molecular data corresponded to Peronospora sparsa. K3PO3 and silicon reduced the incidence and severity with respect to the control. The treatment with K3PO3 showed increases of 24.8 and 97.5% in the length of stems with diameters of 7.5 and 6.2 mm in summer and autumn respectively, comparing with the control. Thus, K3PO3 and silicon can be alternatives in the management of downy mildew of the rose bush under greenhouse conditions.

 

Downloads

Download data is not yet available.
Vol. 9, Núm. 8

Downloads

Published

2018-12-06

How to Cite

Álvarez Romero, Pablo Israel, Rómulo García Velasco, Martha Elena Mora Herrera, Martha Lidya Salgado Siclan, and Daniel Domínguez Serrano. 2018. “Identification and Alternative Management of Downy Mildew in Rose”. Revista Mexicana De Ciencias Agrícolas 9 (8). México, ME:1577-89. https://doi.org/10.29312/remexca.v9i8.1715.

Issue

Vol. 9 No. 8 (2018)

Section

Articles

License

The authors who publish in Revista Mexicana de Ciencias Agrícolas accept the following conditions:

In accordance with copyright laws, Revista Mexicana de Ciencias Agrícolas recognizes and respects the authors’ moral right and ownership of property rights which will be transferred to the journal for dissemination in open access. Invariably, all the authors have to sign a letter of transfer of property rights and of originality of the article to Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP) [National Institute of Forestry, Agricultural and Livestock Research]. The author(s) must pay a fee for the reception of articles before proceeding to editorial review.      

All the texts published by Revista Mexicana de Ciencias Agrícolas —with no exception— are distributed under a Creative Commons License Attribution-NonCommercial 4.0 International (CC BY-NC 4.0), which allows third parties to use the publication as long as the work’s authorship and its first publication in this journal are mentioned.

The author(s) can enter into independent and additional contractual agreements for the nonexclusive distribution of the version of the article published in Revista Mexicana de Ciencias Agrícolas (for example include it into an institutional repository or publish it in a book) as long as it is clearly and explicitly indicated that the work was published for the first time in Revista Mexicana de Ciencias Agrícolas.

For all the above, the authors shall send the Letter-transfer of Property Rights for the first publication duly filled in and signed by the author(s). This form must be sent as a PDF file to: revista_atm@yahoo.com.mx; cienciasagricola@inifap.gob.mx; remexca2017@gmail.

 

This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 International license.

Most read articles by the same author(s)