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25 Μαρ 2018 · The gametophyte of ferns is a cellular monolayer structure, whose more important function is to form the gametes, responsible of sexual fusion that will lead to sporophyte generation. In most cases, as sporophyte develops, the gametophyte is about to disappear,...
1.3 The Gametophyte: Born to Reproduce Either Sexually or Asexually During its life cycle, a fern exists in two distinct forms: the small, sample, haploid gametophyte and the large, morphologically complex, diploid sporophyte. In ferns, the gametophyte lives separately from sporophyte (Klekowski and Baker 1966;
25 Μαρ 2018 · The gametophyte of ferns is a cellular monolayer structure, whose more important function is to form the gametes, responsible of sexual fusion that will lead to sporophyte generation. In most...
1 Ιουλ 1999 · The emergence of the fern Ceratopteris richardii as a model organism for readily identifying and characterizing mutations that affect key developmental processes in gametophytes makes it a...
A second form of asexual reproduction in homosporous ferns involves vegetative propagation of the gametophyte. While relatively rare, such gametophytes typically do not produce sex organs. The fern Vittaria appalachiana, for example, is only known from its gametophytes (Farrar and Mickel, 1991).
Abstract. Ferns are unique among land plants in having sporophyte and gametophyte phases that are both free living and fully independent. Here, we examine patterns of sporophytic and gametophytic gene expression in the fern Polypodium amorphum, a member of the homosporous polypod lineage that comprises 80% of extant fern diversity, to assess how expression of a common genome is partitioned ...
Fern and lycophyte gametophytes are significantly reduced in size and morphological complexity relative to their sporophytic counterparts and have often been overlooked in ecological and physiological studies.
