Results 101 to 110 of about 144,774 (218)

Near-periodic substitution and the genetic variance induced by environmental change [PDF]

open access: yes, 2006
We investigate a model that describes the evolution of a diploid sexual population in a changing environment. Individuals have discrete generations and are subject to selection on the phenotypic value of a quantitative trait, which is controlled by a ...
Barton   +29 more
core   +3 more sources

Characterization of an allotriploid strawberry Fragaria × bifera Duchesne (Rosaceae) from Europe [PDF]

open access: yes, 2015
Peer ...
Gerstberger, Pedro   +3 more
core  

Crossing Lilium Orientals of different ploidy creates Fusarium-resistant hybrid [PDF]

open access: yes, 2010
Oriental hybrid lily is of great commercial value, but it is susceptible to Fusarium disease that causes a significant loss to the production. A diploid Oriental hybrid resistant to Fusarium, Cai-74, was diploidized from triploid obtained from the ...
Liu Feihu   +3 more
core   +2 more sources

EMS induced intercellular chromatin transmigration in Papaver somniferum L.

open access: yesCzech Journal of Genetics and Plant Breeding, 2013
The phenomenon of chromatin migration was observed during microsporogenesis in an ethyl methane sulphonate (EMS) treated population of poppy, which is an important medicinal plant.
Girjesh KUMAR, Sana NASEEM
doaj   +1 more source

De novo sequencing of the Hypericum perforatum L. flower transcriptome to identify potential genes that are related to plant reproduction sensu lato [PDF]

open access: yes, 2015
Background: St. John's wort (Hypericum perforatum L.) is a medicinal plant that produces important metabolites with antidepressant and anticancer activities.
Barcaccia, Gianni   +3 more
core   +1 more source

Postglacial colonization and parallel evolution of metal tolerance in the polyploid Cerastium alpinum [PDF]

open access: yes, 2005
The Fennoscandian flora is characterized by a high frequency of polyploids, probably because they were more successful than diploid plants in colonizing after the last Ice Age.
Nyberg Berglund, Anna-Britt
core  

Microsporogenesis in Brachiaria bovonei (Chiov.) Robyns and B. subulifolia (Mez) Clayton (Poaceae) Microsporogênese em Brachiaria bovonei (Chiov.) Robyns e B. subulifolia (Mez) Clayton (Poaceae)

open access: yesScientia Agricola, 2009
Some African species of Brachiaria have been introduced into the Americas and became the most important forage for pastures in the tropics. New cultivars can be obtained either from direct selections from the natural existing variability in the germplasm
Claudicéia Risso-Pascotto   +2 more
doaj   +1 more source

Large chromosomal structural variations between M. acuminata and M balbisiana and their consequences on chromosome recombination and segregation in a AAAB polyploidy context [PDF]

open access: yes, 2017
Many banana cultivars are triploid interspecific hybrids between M. acuminata (Genome A, 2n=22) and M. balbisiana (Genome B, 2n=22). They included the important group of Plantain cooking bananas classified as AAB.
Baurens, Franc-Christophe   +7 more
core  

Transcriptome Profile Analysis on Ovarian Tissues of Autotetraploid Fish and Diploid Red Crucian Carp

open access: yesFrontiers in Genetics, 2019
Polyploidization can significantly alter the size of animal gametes. Autotetraploid fish (RRRR, 4nRR = 200) (4nRR) possessing four sets of chromosomes were derived from whole-genome duplication in red crucian carp (RR, 2n = 100) (RCC).
Yude Wang   +10 more
doaj   +1 more source

On the functioning of 2n gamete in the Solanum nigrum complex.

open access: yesCYTOLOGIA, 1988
Cytomorphology of a heptaploid hybrid (2n=7x=84) obtained by crossing Solanum nigrum (2n=6x=72) with pollen of S. villosum (2n=4x=48) was studied. From the cytomorphological studies it is suspected that the heptaploid hybrid has originated from an embryo resulting in fertilization of reduced egg-cell of S.
openaire   +2 more sources

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