Results 81 to 90 of about 761 (161)

Prospects and limits of the flow cytometric seed screen – insights from Potentilla sensu lato (Potentilleae, Rosaceae)

open access: yesNew Phytologist, Volume 198, Issue 2, Page 605-616, April 2013., 2013
Summary The flow cytometric seed screen allows for identification of reproductive modes of seed formation and inference of the ploidy of contributing gametes. However, the lack of a mathematical formalization to infer male/female genomic contributions, and the prerequisite of a binucleate female contribution to the endosperm limits its applicability ...
Christoph Dobeš   +3 more
wiley   +1 more source

Taxonomic identification and life cycle comparison of two populations of the monostromatic green algae Monostroma nitidum

open access: yesEcology and Evolution, Volume 14, Issue 5, May 2024.
This study employed molecular markers and morphological studies of two populations of Monostroma nitidum collected from YJ and ZJ. The results revealed no obvious differences in tufA and 18S rDNA sequences between the two populations, although there were extremely significant differences in morphological characteristics. M.
Jiawei Liao   +7 more
wiley   +1 more source

Distinct geographic parthenogenesis in spite of niche conservatism and a single ploidy level: A case of Rubus ser. Glandulosi (Rosaceae)

open access: yesNew Phytologist, Volume 242, Issue 3, Page 1348-1362, May 2024.
Summary Asexual organisms often differ in their geographic distributions from their sexual relatives. This phenomenon, termed geographic parthenogenesis, has long been known, but the underlying factors behind its diverse patterns have been under dispute. Particularly problematic is an association between asexuality and polyploidy in most taxa. Here, we
Michal Sochor   +5 more
wiley   +1 more source

On the presence of fertile gametophytes of Padina pavonica (Dictyotales, Phaeophyceae) from the Iberian coasts [PDF]

open access: yes, 2007
The gametophytes of Padina pavonica (L.) Thivy have received little attention in literature. Both female and predominantly male monoecious gametophytes of P. pavonica are recorded for the first time in the Iberian Peninsula. A detailed description of the
Barceló Martí, M. Carme   +3 more
core   +1 more source

Gametophyte interaction and sexual reproduction: how plants make a zygote [PDF]

open access: yes, 2005
The evolutionary success of higher plants relies on a very short gametophytic phase, which underlies the sexual reproduction cycle. Sexual plant reproduction takes place in special organs of the flower: pollen, the male gametophyte, is released from the ...
Becker, J.D.   +3 more
core   +1 more source

Molecular control of autonomous embryo and endosperm development [PDF]

open access: yes, 2018
Precocious seed development is usually prevented by a series of mechanisms that ensure seed production results from double fertilization. These events are circumvented in natural apomictic plant species that reproduce clonally through seed.
Curtis, Mark, Grossniklaus, Ueli
core  

Genes modulating the increase in sexuality in the facultative diplosporous grass eragrostis curvula under water stress conditions [PDF]

open access: yes, 2020
Eragrostis curvula presents mainly facultative genotypes that reproduce by diplosporous apomixis, retaining a percentage of sexual pistils that increase under drought and other stressful situations, indicating that some regulators activated by stress ...
Bellido, Andrés   +7 more
core   +1 more source

Characterization of tissue specific expressed proteins and metabolites in Cenchrus polystachion (L.) Schult and their role in apomixis [PDF]

open access: yes, 2020
Agricultural production can be aggrandized by adaptation of trending technologies or processes which focus on increase in seed production. Asexual reproduction in plants or Apomixis is such a process, but its absence in major crop plants has paved an ...
Barage, Sagar   +2 more
core   +2 more sources

Pharmacologically Induced Meiosis Apomeiosis Interconversions in \u3ci\u3eBoechera\u3c/i\u3e, \u3ci\u3eArabidopsis\u3c/i\u3e and \u3ci\u3eVigna\u3c/i\u3e [PDF]

open access: yes, 2018
Apomixis is a clonal propagation method that produces offspring identical to the mother plant. With this feature, superior traits could be maintained over generations. However, our knowledge about apomixis is limited.
Gao, Lei
core   +1 more source

Identification and genetic analysis of the APOSPORY locus in Hypericum perforatum L. [PDF]

open access: yes, 2010
Der Induktion der Apomixis (Samenbildung ohne Befruchtung) in Kulturpflanzen stellt einen lang gehegten Ziel der Züchtungsforschung dar, da es die Fixierung der Heterozygotie ermöglichen würde.
Schallau, Anna
core   +1 more source

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