VARIACIÓN GEOGRÁFICA EN LA RESPUESTA A LA SEQUÍA EN PLÁNTULAS DE Pinus greggii Engelm.

Authors

  • Carmelo Hernández Pérez SEMARNAT. Dirección de Plantaciones Forestales Comerciales. Av. Progreso No. 5, Viveros de Coyoacán, 04110 México, D. F.
  • J. Jesús Vargas Hernández Colegio de Postgraduados, Programa Forestal, Montecillo, México
  • Carlos Ramírez Herrera Colegio de Postgraduados, Programa Forestal
  • Abel Muñoz Orozco Colegio de Postgraduados, Programa de Genética

Keywords:

Drought adaptation, water deficit, biomass allocation, Pinus greggii, drought tolerance, geographic variation

Abstract

Seedlings from 15 seed sources of Pinus greggii from two geographical regions were evaluated under two watering regimes in a greenhouse. The objective was to determine possible differences among populations in height growth and biomass allocation of seedlings in response to water stress. Significant differences between geographic regions and between populations within regions were found in seedling growth. Results show that populations from northern Mexico that are even smaller, were less affected by drought; they developed more growing roots and root biomass than southern populations. In addition, potential growth rate of populations (under favorable water conditions) was positively correlated with drought effect. Ali these traits conferred higher drought tolerance to northern populations. The response of seedlings from different seed sources to soil­water deficit was closely related to the environmental conditions at the site of origin, particularly to mean annual rainfall. Therefore, seed sources from drier sites with higer latitude and sea leve!, were more drought tolerant than those from wetter sites.

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Published

2020-10-16

How to Cite

Hernández Pérez, Carmelo, J. Jesús Vargas Hernández, Carlos Ramírez Herrera, and Abel Muñoz Orozco. 2020. “VARIACIÓN GEOGRÁFICA EN LA RESPUESTA A LA SEQUÍA EN PLÁNTULAS DE Pinus Greggii Engelm”. Revista Mexicana De Ciencias Forestales 26 (89). México, ME:61-79. https://cienciasforestales.inifap.gob.mx/index.php/forestales/article/view/919.

Issue

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

Section

Scientific article

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