Revista Chapingo Serie Ciencias Forestales y del Ambiente
Universidad Autónoma Chapingo
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Revista Chapingo Serie Ciencias Forestales y del Ambiente
Volume VI, issue 2, July - December 2000
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SELECCIÓN FAMILIAL EN PLANTAS DE Eucalyptus camaldulensis Dehnh. EVALUADAS BAJO CONDICIONES DE SALINIDAD EN VIVERO
FAMILY SELECTION IN Eucalyptus camaldulensis Dehnh SEEDLINGS GROWING UNDER CONDITIONS OF SALINITY IN A NURSERY

B. B. Hernández-García; J. Jesús Vargas-Hernández

http://dx.doi.org/1111

Received: 2001-04-09

Accepted: 2001-05-13

Available online: / pages.137-141

 

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  • descriptionAbstract

    The effect of salinity on the survival, growth and biomass accumulation was evaluated in seedlings of 46 open-pollinated families of Eucalyptus camaldulensis. Seedlings were exposed to moderate salinity (32.5 gL-1 of NaCl) for 75 days to evaluate genetic variation and to select the families most tolerant to this adverse condition. Broad genetic variation was found for most growth traits evaluated. Seedling survival under conditions of salinity varied from 2.5 to 80.5% among families. Height and biomass accumulation had relatively high heritability values, on the basis of both the individual(h2 i>0.75) and the family (h2 f>0.90). This shows a high potential for selection at the family level using these traits. The main variable for selection was percentage of survival (i.e. family survival above 40%). In addition, the presence of other favorable traits, including height, leaf formation and retention, and biomass accumulation were considered. Evaluating the response of seedlings to salinity permitted the identification of the 15 families most tolerant to the unfavorable conditions imposed in this study.

    Keyworks: genetic variation, heritability, survival, adaptability.
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  • starCite article

    Hernández-García, B. B.,  &  Vargas-Hernández, J. J. (2000).  FAMILY SELECTION IN Eucalyptus camaldulensis Dehnh SEEDLINGS GROWING UNDER CONDITIONS OF SALINITY IN A NURSERY. Revista Chapingo Serie Ciencias Forestales y del Ambiente, VI(2), 137-141. http://dx.doi.org/1111