Results 41 to 50 of about 1,304 (209)

Embryological studies on Fragaria x ananassa Duch. after pollination by three species of Potentilla

open access: yesActa Societatis Botanicorum Poloniae, 2014
Embryological studies were carried out after pollinating four female varieties of Fragaria ananassa Duch. (Freja, Sonja, Mieze Schindler, Reine des Precoce) with three species of Poteiatilla (P. geoides, P. rupestris, P. fruticosa).
Katarzyna Niemirowicz-Szczytt
doaj   +1 more source

Identification of a molecular marker linked to apomixis in Brachiaria humidicola (Poaceae) [PDF]

open access: yes, 2010
A bulked segregant analysis using RAPD technique was carried out to identify molecular markers linked to apomixis in a Brachiaria humidicola F1 population that segregated 1 : 1 for the mode of reproduction (apomixis and sexual).
BITENCOURT, G. de A.   +6 more
core   +1 more source

On the cytology of apogamy and apospory.—II. Preliminary note on apospory [PDF]

open access: yesProceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character, 1905
Apospory is the direct vegetative process which leads from the sporophyte to the gametophyte without the intervention of spores. This phenomenon has for a long time been known to occur in mosses and ferns, and several writers have described its morphological characters, but its cytological history has hitherto remained unrecorded.
openaire   +1 more source

In Silico and Fluorescence In Situ Hybridization Mapping Reveals Collinearity between the Pennisetum squamulatum Apomixis Carrier-Chromosome and Chromosome 2 of Sorghum and Foxtail Millet. [PDF]

open access: yesPLoS ONE, 2016
Apomixis, or clonal propagation through seed, is a trait identified within multiple species of the grass family (Poaceae). The genetic locus controlling apomixis in Pennisetum squamulatum (syn Cenchrus squamulatus) and Cenchrus ciliaris (syn Pennisetum ...
Sirjan Sapkota   +7 more
doaj   +1 more source

Megasporogenesis and megagametogenesis in several Tripsacum species (Poaceae) [PDF]

open access: yes, 1995
Le complexe agamique des #Tripsacum$ (x=18) représente une source de caractères intéressants pour l'amélioration génétique du maïs, sous réserve que l'apomixie puisse être manipulée.
Carman, J.G.   +3 more
core   +1 more source

Apomixis in Anthoxanthum nitens and A. repens (Poaceae L.) in the Saratov region flora [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Химия. Биология. Экология
The article presents the results of cytoembryological analysis of four cenopopulations of two Anthoxanthum L. species from the fl ora of the Saratov region: A. nitens (Weber) Y.Schouten & Veldkamp and A. repens (Host) Veldkamp.
Kaybeleva, Elmira I.   +1 more
doaj   +1 more source

Embryo sac development in some representatives of the tribe Cynodonteae (Poaceae)

open access: yesBothalia: African Biodiversity & Conservation, 1994
Chloris virgata Sw., Cynodon dactylon (L.) Pers., Harpochloa falx (L. f.) Kuntze, and Tragus berteronianus Schult. have a Polygonum type of embryo sac development.
A. Strydom, J. J. Spies
doaj   +1 more source

Reproductive behavior in maize-Tripsacum polyhaploid plants : implications for the transfer of apomixis into maize [PDF]

open access: yes, 1996
L'expression de l'apomixie gamétophytique chez les graminées est limitée aux formes polyploïdes. Au cours de notre programme de transfert de l'apomixie de #Tripsacum$ tétraploïdes diplosporiques (2n = 4x = 72) au maïs (2n = 20) par rétrocroisements ...
Berthaud, Julien   +4 more
core   +1 more source

The MAP3K-Coding QUI-GON JINN (QGJ) Gene Is Essential to the Formation of Unreduced Embryo Sacs in Paspalum

open access: yesFrontiers in Plant Science, 2018
Apomixis is a clonal mode of reproduction via seeds, which results from the failure of meiosis and fertilization in the sexual female reproductive pathway. In previous transcriptomic surveys, we identified a mitogen-activated protein kinase kinase kinase
Micaela Mancini   +16 more
doaj   +1 more source

Chromosome doubling in Tripsacum : the production of artificial, sexual tetraploid plants [PDF]

open access: yes, 1995
Une collection de cals diploïdes et embryogènes de #Tripsacum$ a été constituée et traitée à la colchicine pour induire des doublements chromosomiques. Des sections de cals présentant des cellules dupliquées ont été identifiées par cytométrie en flux, et
Bello, S.   +6 more
core   +1 more source

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