Results 31 to 40 of about 426 (146)

Amphicarpic plants: definition, ecology, geographic distribution, systematics, life history, evolution and use in agriculture

open access: yesBiological Reviews, Volume 95, Issue 5, Page 1442-1466, October 2020., 2020
ABSTRACT Although most plants produce all of their fruits (seeds) aboveground, amphicarpic species produce fruits (seeds) both above‐ and belowground. Our primary aims were to determine the number of reported amphicarpic species and their taxonomic, geographic, life form and phylogenetic distribution, to evaluate differences in the life history of ...
Keliang Zhang   +5 more
wiley   +1 more source

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

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

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

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

Inheritance of Apospory in Bahiagrass, Paspalum Notatum

open access: yesHereditas, 2004
Previous studies on the inheritance of aposporous apomixis in bahiagrass showed a wide range of segregation ratios in crosses involving sexual and aposporous apomictic plants. The F1 progenies were classified through a visual progeny test carried out on few F2 plants.
E J, Martínez   +3 more
openaire   +2 more sources

Transcriptome analysis of the Arabidopsis megaspore mother cell uncovers the importance of RNA helicases for plant germline development. [PDF]

open access: yesPLoS Biology, 2011
Germ line specification is a crucial step in the life cycle of all organisms. For sexual plant reproduction, the megaspore mother cell (MMC) is of crucial importance: it marks the first cell of the plant "germline" lineage that gets committed to undergo ...
Anja Schmidt   +5 more
doaj   +1 more source

Repeatability, Genetic Variability and Importance of Forage Traits in Ecotypes of Brunswickgrass (Paspalum nicorae Parodi) via BLUP

open access: yesPlant Breeding, EarlyView.
ABSTRACT This study estimated the repeatability of forage traits in 84 Paspalum nicorae ecotypes using six statistical methods and quantified the minimum number of harvests needed for effective selection. Multivariate analyses based on best linear unbiased prediction (BLUP) values were also performed to assess genetic variability, identify key traits ...
Diógenes Cecchin Silveira   +9 more
wiley   +1 more source

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