Results 111 to 120 of about 19,459 (297)

A new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae)

open access: yesNordic Journal of Botany, EarlyView.
Revisions of herbarium collections reveal a new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae). Strophopappus comprises nine species occurring in South America, eight of which are endemic to Brazil. Currently, Vernonia riedeliana is treated as a synonym of Strophopappus bicolor.
Danielle Remor   +2 more
wiley   +1 more source

Effect of selection for pollen grain size on various traits in common bean [PDF]

open access: yes, 2014
Selection among microgametophytes usually exploits variation in pollen grain germination. Studies of variation in pollen grain size in common bean (Phaseolus vulgaris L.) suggested that selection for size might lead to changes in sporophytic traits.
White, Jeffrey W., Montes Rojas, C
core  

Localization of KINβγ in pollen and pollen tube. [PDF]

open access: yes, 2016
(A) and (B) Localization of KINβγ in the mature pollen grain expressing SNF4-YFP. (B) The pollen grain in (A) labeled with DAPI to visualize the nucleus. (C) and (D) Localization of KINβγ in pollen tube expressing SNF4-YFP.
Xian Sheng Zhang (105935)   +7 more
core   +1 more source

Assessing ChatGPT for taxonomic and floristic studies

open access: yesNordic Journal of Botany, EarlyView.
The advancement of biological sciences has long been closely linked to technological progress. ChatGPT, a generative artificial intelligence chatbot capable of producing human‐like conversational responses, has recently attracted attention as a potential support tool for scientific research.
Mykyta Peregrym   +7 more
wiley   +1 more source

In vitro pollen germination and pollen grain morphology in some sweet cherry (Prunus avium L.) cultivars [PDF]

open access: yes, 2013
In vitro pollen germination on agarose-sucrose medium, and pollen grain morphology by scanning electron microscopy, were investigated in four sweet cherry (Prunus avium L.) cultivars ('Karina', 'Kordia', 'Regina' and 'Summit').
Cerović, Radosav   +3 more
core   +2 more sources

A Statistic Study of Airborne Pollen Grains

open access: yesYAKUGAKU ZASSHI, 2000
Since 1969, authors have been doing a statistical analysis of airborne pollen grains, aiming at the clarification of their atmospheric behaviors, in connection with an increase in a number of pollinosis cases. The airborne pollens were collected three times a week starting from January 1 and ending December 31 with the help of cascade impactor, by ...
M, Sado, Y, Inouye
openaire   +3 more sources

Poaceae pollen grain size as a tool to distinguish past grasslands in South America: a new methodological approach [PDF]

open access: yes, 2010
Despite the dominance of grasslands during the last glacial period, especially in South America, the highly uniform morphology of Poaceae pollen grains has so far allowed only very few palynological studies based on Poaceae pollen.
Hermann Behling   +3 more
core   +1 more source

Portulaca abscondita (Portulacaceae, Caryophyllales), a new microendemic species from Monte Azul, Minas Gerais, Brazil

open access: yesNordic Journal of Botany, EarlyView.
Portulaca (Portulacaceae) is a cosmopolitan genus with centers of diversity in Africa and South America. In Brazil, 22 species are recognized, most occurring in xerophytic environments of the Cerrado, particularly in Campos Rupestres. These rocky montane habitats, especially in northern Minas Gerais state, remain undercollected despite their high ...
Danilo Alvarenga Zavatin   +7 more
wiley   +1 more source

Tomato POLLEN DEFICIENT 2 encodes a G-type lectin receptor kinase required for viable pollen grain formation. [PDF]

open access: yesJ Exp Bot, 2023
Micol-Ponce R   +12 more
europepmc   +1 more source

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