Revista Chapingo Serie Ciencias Forestales y del Ambiente
Universidad Autónoma Chapingo
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Revista Chapingo Serie Ciencias Forestales y del Ambiente
Volume XXV, issue 1, January - April 2019
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Germinación de dos variedades de Ochroma pyramidale (Cav. ex Lam.) Urb. de la Selva Lacandona, Chiapas
Germination of two varieties of Ochroma pyramidale (Cav. ex Lam.) Urb. fromthe Lacandon Jungle, Chiapas

Karina A. Toledo-González; Samuel I. Levy-Tacher; Pedro A. Macario-Mendoza; José A. de Nova-Vázquez

http://dx.doi.org/10.5154/r.rchscfa.2018.06.046

Received: 2018-06-10

Accepted: 2018-10-26

Available online: 2018-10-29 / pages.85-94

 

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  • descriptionAbstract

    Introduction:  Ochroma pyramidale  (Cav. ex Lam.) Urb.  is a fast-growing native species ofeconomic and ecological importance. It is currently the only species in the genus Ochroma.
    Objective: To determine the effect of seven pre-germination treatments applied on seeds of O.pyramidale  in  its typical variety and  O.   pyramidale  var.   bicolor  (Rowlee)   Brizicky   in   theLacandon Jungle.
    Materials and methods: Seven germination treatments were evaluated: control, soaking in waterat room temperature (Soaking12h and Soaking24h), immersion in boiling water at 100 °C (Boiling3sand   Boiling10s) and  immersion   in   boiling   water   and   soaking   in   coconut   water   (Boiling3s  +Soaking24h,   and   Boiling10s  +   Soaking24h).   Coconut   water   was   used   as   a   natural   source   ofcytokinins.
    Results and discussion: Germination of O. pyramidale in its typical variety (62 to 69 %) wasstatistically higher (P = 0.05) with treatments that included immersing the seeds in boiling water.In the case of O. pyramidale var. bicolor, the highest germination values were obtained by theBoiling3s (64 %) and Boiling3s + Soaking24h (59 %) treatments. The O. pyramidale var. bicolorseeds were susceptible to the boiling water immersion time, since germination was statisticallygreater (P = 0.05) at 3 s than at 10 s.
    Conclusions:  Treatments   that   included immersion in   boiling   water had   a   greater effect ongermination. Coconut  water  had no  significant  effect  on  the variable;  therefore,  the  use  ofsynthetic cytokinins is suggested in order to control the phytohormone dosage and thus verify itseffect on germination.

    Keyworks: dormancy; imbibition; seed cover; cytokinins; coconut water
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  • starCite article

    Toledo-González, K. A.,  Levy-Tacher, S. I.,  Macario-Mendoza, P. A.,  &  de Nova-Vázquez, J. A. (2019).  Germination of two varieties of Ochroma pyramidale (Cav. ex Lam.) Urb. fromthe Lacandon Jungle, Chiapas. Revista Chapingo Serie Ciencias Forestales y del Ambiente, XXV(1), 85-94. http://dx.doi.org/10.5154/r.rchscfa.2018.06.046