Symbiotic seed germination and protocorm development of Aa achalensis Schltr., a terrestrial orchid endemic from Argentina

FRACCHIA SEBASTIAN; SILVANI VANESA; FLACHSLAND EDUARDO; TERADA GRACIELA; SEDE SILVANA

MYCORRHIZA

SPRINGER

Lugar: Berlin; Año: 2013

0940-6360

Aa achalensis is an endangered terrestrial orchid endemic from Argentina. In vitro symbiotic seed germination was evaluated for its propagation. Five different fungal strains were isolated from this species: two Rhizoctonia-like related to Thanatephorus cucumeris and three ascomicetaceous fungi belonging to Phialophora graminicola and one to an uncultured Pezizaceae. All five isolates promoted seed germination being one Thanatephorus cucumeris strain the most effective. After 16 weeks of growth, 30% of A. achalensis protocorms developed until seedlings with two/four leaves in this treatment. These findings open an opportunity to the knowledge and preservation of this species.