Abstract

HUERTA-ZAVALA, Jorge; ARREGUIN-SANCHEZ, María de la Luz; QUIROZ-GARCIA, David Leonor  and  FERNANDEZ-NAVA, Rafael. The morphogenic development of gametophyte and morphology of the sporophytes of Cheilanthes bonariensis (Willd.) proctor (Pteridaceae-Helechos). Polibotánica [online]. 2015, n.40, pp.45-58. ISSN 1405-2768.

The morphogenic development of gametophyte Cheilanthes bonariensis is described from spores collected in the municipality of Tlaxco, Tlaxcala, Mexico. Its were sown in polyurethane vessel of 262 ml in two natural substrates (maquique and plant litter). This taxon has trilete spores with spherical or oval shape. The germination Vittaria type was observed at 15 days in both substrates. The gametophyte development was Adiantum type, the young gametophyte was presented to 31 days in plant litter and 54 in maquique. The adult gametophytes were observed at 44 days in plant litter and 54 days in maquique; the gametangia were not appreciated. The sporophytes were established through an apogamic bud from 54 days in plant litter and maquique at 93 days. In the day148, the sporophytes were formed from olds prothalli necrotic. The development of the sporophyte in maquique was slow, in plant litter was quick. Based on the time of development of the sporophytes of this species it may be susceptible to a possible commercial exploitation.

Keywords : apogamy; training of the sporophytes; commercial exploitation; prothalli necrotic.

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