Efecto de un producto bio-estimulante basado en hongos micorrízicos sobre la germinación y colonización de raíces de orquídeas.

Abstract

Abstract: The asymbiotic propagation of orchids in vitro is not always efficient and profitable, some highly valued species have limitations during germination or growth. The symbiotic performance of some orchids of interest for the Ecuadorian industry was evaluated. Fungi of the genus Tulasnella (strain 063) and Ceratobasidium (strains 200 and 101) were inoculated into seeds of Stanhopea reichenbachiana, Oncidium fuscatum alba y Stelis kefersteiniana; and in seedlings of Stelis pachyphyta, Phragmipedium Barbara Leann y Oncidium abortivum. The germination test was carried out with the biostimulant prototype. In addition, the infectivity potential of the most productive strain (200) encapsulated was compared and unencapsulated in a highly profitable orchid. In the germination test, protocorms were observed forming rhizoids and shoots. In the symbiotic growth test, a positive and differential effect on the growth of O. abortivum y S. pachyphyta, and typical platoons at their roots, in treatments with Tulasnella 063 and Ceratobasidium 200. The encapsulated strain 200 colonized the roots and promoted the growth of O. abortivum same as the treatment with unencapsulated mycelium.