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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,...
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.
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...
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;
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 gametophyte ecology and highlight the methodological field and laboratory approaches used to describe the geographic and ecological distribution of fern gameto-phytes. We then present an overview of fern gametophyte physiology, with an emphasis on the aspects of carbon and water relations that may underlie the geographic and
Premise of research. Ferns (monilophytes) and lycophytes are unique among land plants in having two independent life stages: the gametophyte generation, which is generally small, cordiform, and short-lived, senescing after fertilization, and the sporophyte generation, which is considered the dominant, long-lived portion of the life cycle ...
