Results 81 to 90 of about 4,906 (172)

Effects of nickel on the fern Regnellidium diphyllum Lindm. (Marsileaceae)

open access: yesBrazilian Journal of Biology
The heterosporous fern Regnellidium diphyllum occurs in southern Brazil and some adjoining localities in Uruguay and Argentina. Currently it is on the list of threatened species in the state of Rio Grande do Sul.
MA. Kieling-Rubio   +2 more
doaj   +1 more source

In vitro polyembryony induction in a critically endangered fern, Pteris tripartita Sw

open access: yesAsian Pacific Journal of Reproduction, 2016
Objective: An efficient in vitro protocol was established during the development of polyembryony in the spore derived gametophyte of Pteris tripartita Sw. Methods: Sterilized spores were germinated in half strength Murashige and Skoog (MS) basal media to
Baskaran Xavier Ravi
doaj   +1 more source

The second record of a natural apogamous moss sporophyte worldwide

open access: yes, 2012
An apogamous sporophyte is reported on a gametophore of the moss Fissidens crassipes subsp. warnstorfii (M.Fleisch.) Brugg.-Nann. The apogamous sporophyte is developed in lateral position near the base of the stem of the gametophore.
EL-FARAMAWI Marwa

Auteur

EL-FARAMAWI

core  

A fern WUSCHEL-RELATED HOMEOBOX gene functions in both gametophyte and sporophyte generations

open access: yesBMC Plant Biology, 2019
Background Post-embryonic growth of land plants originates from meristems. Genetic networks in meristems maintain the stem cells and direct acquisition of cell fates. WUSCHEL-RELATED HOMEOBOX (WOX) transcription factors involved in meristem networks have
Christopher E. Youngstrom   +3 more
doaj   +1 more source

Observations on Sporophyte Development in Odontoschisma prostratum (Hepaticae)

open access: yes, 1972
Anatomical study of developmental stages of the sporophyte of living Odontoschisma prostratum (Sw.) Trev. revealed that the conspicuous swelling of the female branch during sporophyte development is correlated with a remarkably strong growth of the ...
Gradstein, S. Rob
core  

Appendix II: 111 SNP markers in sporophyte samples from sympatric populations

open access: yes, 2019
111 SNP markers in sporophyte samples from sympatric ...
Sawangproh, W (via Mendeley Data)
core   +1 more source

Frequency of DNA methylation changes over the sporophyte-gametophyte transition.

open access: yes, 2013
Variation among methylation-susceptible loci in degree of instability of methylation status from sporophytes to descendant pollen gametophytes in Helleborus foetidus, expressed as the proportion of individual plants (all sampling sites combined) that ...
Pilar Bazaga (437607)   +2 more
core   +1 more source

The influence of Pseudomonas syringae pv. aptata on the functional characteristics of the microgametophyte of beetroot varieties with different levels of resistance to bacteriosis

open access: yesОвощи России
Relevance. An increase in the spread of bacteriosis on beetroot in the conditions of the Moscow region carries an epidemiological danger, which actualizes research on the development of a method-ology for evaluating table beet plants for resistance to ...
S. A. Vetrova   +3 more
doaj   +1 more source

Skipped reproductive cycles and extensive sporophyte abortion in the desert moss Tortula inermis correspond to unusual rainfall patterns

open access: yes, 2002
A phenological assessment of Tortula inermis (Brid.) Mont. populations in the Mojave Desert, Nevada, U.S.A., over a period of 4 years revealed that the sporophyte cohort initiated in early 1995 remained dormant until early 1998, by which time ...
Lloyd R Stark
core   +1 more source

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