Results 91 to 100 of about 1,666 (209)

Implications of hybridisation and cytotypic differentiation in speciation assessed by AFLP and plastid haplotypes : a case study of Potentilla alpicola La Soie [PDF]

open access: yes, 2012
Background: Hybridisation is presumed to be an important mechanism in plant speciation and a creative evolutionary force often accompanied by polyploidisation and in some cases by apomixis. The Potentilla collina group constitutes a particularly suitable
Dobeš, Christoph   +2 more
core   +1 more source

Apomixia em Manihot esculenta e em seus híbridos interespecíficos Apomixis in Manihot esculenta and in its interespecific hybrids

open access: yesPesquisa Agropecuária Brasileira, 2001
O objetivo deste trabalho foi estudar a citogenética e a morfologia do saco embrionário dos clones EB1 (Manihot esculenta Crantz) e EB12 (geração F3 de M. esculenta x M. glaziovii Muell), dos híbridos F1 e F2 de M. neusana Nassar x M.
Evie dos Santos de Sousa
doaj   +1 more source

Evolutionary history of Hypericum perforatum L. [PDF]

open access: yes, 2011
The genus Hypericum is a highly diverse group of about 500 species. Among the Eurasian taxa, Hypericum perforatum L. and H. maculatum Crantz are representative examples with a largely overlapping distribution area in Central Europe.
Scheriau, Charlotte Luise
core   +1 more source

Ontogenetically-regulated male sterility in tissue culture - induced and spontaneous sorghum mutants [PDF]

open access: yes, 2003
Variability of male fertility expression in the AS-1 line, a somaclonal variant obtained from tissue culture of CMS-plant, and in the progeny of revenant '124-1' obtained from fertile tiller, which developed on CMS-plant transferred from the field to the
Belyaeva E.V., Elkonin L.A.
core   +1 more source

Widening the gene pool of sexual tetraploid bahiagrass: Generation and reproductive characterization of a sexual synthetic tetraploid population [PDF]

open access: yes, 2018
The improvement of bahiagrass, Paspalum notatum Flüggé, has been inhibited by reduced levels of genetic diversity in sexual tetraploid germplasm. A few experimental sexual tetraploid genotypes (ESTGs) have been generated by chromosome doubling, but these
Acuña, Carlos Alberto   +6 more
core   +1 more source

Construction of a preliminary genetic linkage map of yerba mate (Ilex paraguariensis) [PDF]

open access: yes, 2014
Las hojas de la yerba mate se utilizan para la preparación del mate, una infusión de profunda raigambre histórica, social y cultural en Sudamérica.
Espasandin, Fabiana Daniela   +7 more
core  

Genetic fine-mapping of DIPLOSPOROUS in Taraxacum (dandelion; Asteraceae) indicates a duplicated DIP-gene [PDF]

open access: yes, 2010
Background DIPLOSPOROUS (DIP) is the locus for diplospory in Taraxacum, associated to unreduced female gamete formation in apomicts. Apomicts reproduce clonally through seeds, including apomeiosis, parthenogenesis, and autonomous or pseudogamous ...
Bakx-Schotman, Tanja   +3 more
core   +5 more sources

Reproduction mode and apospory expressivity of selected hybrids of Paspalum notatum Flügge [PDF]

open access: yes, 2021
Paspalum notatum Flüggé (bahiagrass) is the most important forage grass in the native grasslands of southern Brazil; the native germplasm is tetraploid and apomictic.
Dall'Agnol, Miguel   +4 more
core  

Genetic Control of Apospory in Apomictic Paspalum Species.

open access: yesCYTOLOGIA, 1999
The genetic control of aposporous apomixis in Paspalum was investigated by determination of the reproductive mode of the progeny from a cross of the sexual, self-incompatible tetraploid, P. ionanthum by the facultative apomict, P. cromyorrhizon. One hundred and sixty-nine progeny were assessed using embryological analysis, of these, 127 were shown to ...
Eric J. Martinez   +2 more
openaire   +2 more sources

The use of retrotransposon-based molecular markers to analyze genetic diversity [PDF]

open access: yes, 2011
Molecular markers play an essential role in all aspects of genetics, modern plant breeding, in human forensics, for map-based cloning of genes, ranging from the identification of genes responsible for desired traits to the management of backcrossing ...
Kalendar, Ruslan
core   +2 more sources

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