homospory

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homospory

[hə′mäs·pə·rē]
(botany)
Production of only one kind of asexual spore.
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References in periodicals archive ?
Sexual and subsexual systems in the homosporous ferns: a new hypothesis.
Genetic map-based analysis of genome structure in the homosporous fern Ceratopteris richardii.
In Fern Clade #1 the homosporous species Stauropteris oldhamia is sister to the heterosporous species Gillesplea randolphensis + Stauropteris burntislandica.
We anticipate that future analyses which combine morphological data from living and fossil species will prove equally valuable for resolving familial relationships among families of homosporous leptosporangiate ferns.
The origin of such high chromosome number was a matter of debate and two hypotheses were proposed, as it was said before: one suggesting that homosporous ferns are true polyploids, resulting from repeated cycles of polyploidy, followed by a process of diploidization with a massive gene silencing; while the other, suggested that they are true diploids having achieved high chromosome numbers via other mechanisms (Barrington et al.
Autogamous allohomoploidy in Alsophila and Nephelea (Cyatheaceae): A new hypothesis for speciation in homoploid homosporous ferns.
Polyploidy, breeding systems, and genetic differentiation in homosporous pteridophytes.
adiantum-nigrum, combined with the fact that its parents are not found in Hawaii, provides a unique opportunity to explore the possibility of multiple colonizations of this homosporous fern onto the archipelago and, therefore, to assess the likelihood of continued dispersal between Hawaiian and non-Hawaiian conspecific populations.
The sporophytes of most homosporous ferns behave as short-lived perennials, with mean generation times of approximately 5 to 20 yr (pers.
Some aspects of reproductive biology of the gametophyte generation of homosporous ferns.