The time taken for development of the different gametophytic
stages of Arthromeris himalayensis is shown in Table 1.
Gametophytes germinated on soil or moved from agar to soil propagated new gametophytic
tissue in the soil boxes, eventually forming a thick gametophytic
self-incompatibility is controlled by a single major locus on chromosome 1 in Lycopersicon peruvianum.
The study of orbicules could be particularly rewarding since they offer a window on several biological issues on the borderline between gametophyte and sporophyte, such as the ratio of sporophytic and gametophytic
genetic control in the development of the sporoderm, the function and chemical composition of lipidic fractions of tapetal origin in flowering plants (Piffanelli et al.
self-incompatibility: understanding the cellular mechanisms involved in "self" pollen tube inhibition.
2006): cellular response to the stress, suppression of the gametophytic
program, and expression of the embryogenic program.
Gametophyte morphology and development of three species of Cyrtogonellum Ching (Dryopteridaceae) were described with the aim to increase our knowledge on the gametophytic
stage of this fern genus especially the occurrence of sexual structures.
In an obituary of Pringsheim, Scott (1895) championed Pringsheim's opinion that the free-living sexual and asexual forms of thallophytes were homologous, and that their alternation was the phylogenetic precursor to the alternation of gametophytic
and sporophytic generations in archegoniates.
Dryopteridaceae, Cyrtomium, allozymes, conservation, founder effect, glacial refugia, homosporous fern, gametophytic
selling, population history, population structure
In this work we provide the first account of farina production in the gametophyte of a non-notholaenoid: two accessions of Argyrochosma nivea from different geographical localities were found to have farina on their gametophytes, suggesting that this gametophytic
character is not a synapomorphy for the notholaenoids, and may have had several independent evolutionary origins.
The dkg1 mutants were shown to be constitutively active in several photomorphogenic responses mediated by phytochrome (a red and far-red light photoreceptor) through the gametophytic
phase (Kamachi et al.
a sporophyte) actually occur; advanced charophytes are gametophytic
and sporophytic regeneration of scales of Platycerium bifurcatum (Cav.
The switch from the gametophytic
program to the alternative sporophytic program is initiated using different types of stress, inducing the embryogenic development of microspores (Garrido et al.
It is also possible that the entire leaf and all other leaves of the mother sporophyte were heterozygous because one of two possible gametophytic
parents was mutant.