IMPACTO DEL OZONO SOBRE EL POLEN DE Pinus hartwegii Lindl.

Authors

  • Tomás Hernández Tejeda Centro Nacional de Investigación Disciplinaria en Conservación y Mejoramiento de Ecosistemas Forestales (CENID-COMEF), INIFAP. Ave. Progreso No. 5, Viveros de Coyoacán 0411 O México, 2 D.F.
  • Roger M. Cox Canadian Forest Service-Maritimes, Natural Resources Ganada
  • John Malcolm Canadian Forest Service-Maritimes, Natural Resources Ganada
  • María de Lourdes de la Isla de Bauer Colegio de de Postgraduados. Postgraduados. Programa Programa de Forestal. Hidrociencias
  • Jesús Vargas Hernández Colegio de Postgraduados. Programa Forestal
  • Alejandro Velázquez Martínez Colegio de Postgraduados. Programa Forestal
  • Dionicio Alvarado Rosales Colegio de Postgraduados. Programa de Fitopatología

Keywords:

Fumigation, pollen germination, ozone, Pinus hartwegii, pollen, pollinic tube

Abstract

Air pollution, particularly photochemical oxidants, induces changes in the reproductive processes of vegetative species In this study, the effect of ozone on germination and tube growth of Pinus hartwegii pollen grains was investigated. Pollen was collected from 3 forest areas in the Mexico City Air Basin with varying air pollution exposure levels: Desierto de los Leones, Ajusco and Zoquiapan. lt was suspended in tissue culture media (Brewbaker solution) plus a solidifying agent (Gelrite) ata concentration near 2,000 grains per 50 µI droplet. Droplets were deposited on glass slides, which were incubated in Petri dishes that served as humidity chambers. The Petri dishes were opened daily only during the periods of ozone fumigation. The pine pollen was artificially exposed in special fumigation chambers to: 0.03 (control), 0.20 and 0.30 ppm ozone for 3 hours per day, for 3 or 6 consecutive days. Results showed that pollen grains were equally affected by ozone, in spite of theír site of origin. The inhibition of germination and tube growth of P. hartwegii pollen was greater at higher ozone concentrations, and pollen germination decreased significantly ozone exposure periods were longer.

Downloads

Download data is not yet available.

Downloads

Published

2020-10-16

How to Cite

Hernández Tejeda, Tomás, Roger M. Cox, John Malcolm, María de Lourdes de la Isla de Bauer, Jesús Vargas Hernández, Alejandro Velázquez Martínez, and Dionicio Alvarado Rosales. 2020. “IMPACTO DEL OZONO SOBRE EL POLEN DE Pinus Hartwegii Lindl”. Revista Mexicana De Ciencias Forestales 26 (89). México, ME:5-18. https://cienciasforestales.inifap.gob.mx/index.php/forestales/article/view/916.

Issue

Vol. 26 No. 89 (2001): Ciencia Forestal en México

Section

Scientific article

License

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

In accordance with copyright laws, Revista Mexicana de Ciencias Forestales recognizes and respects the authors’ moral right and ownership of property rights which will be transferred to the journal for dissemination in open access.

All the texts published by Revista Mexicana de Ciencias Forestales –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 Forestales (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 Forestales.

For all the above, the authors shall send the form of 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: ciencia.forestal2@inifap.gob.mx

 

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