Results 51 to 60 of about 11,925 (171)

Ontogenia dos estratos parietais da antera de Tabebuia pulcherrima Sandw. (Bignoniaceae) [PDF]

open access: yesActa Botanica Brasilica, 1997
A ontogenia do tapete e dos demais estratos parietais, bem como o desenvolvimento do estômio e deiscência da antera de Tabebuia pulcherrima, foram presentemente estudados. O padrão de formação da parede do androsporângio é do tipo Dicotiledôneo. A camada parietal primária, a camada esporogênica e o tapete interno derivam-se diretamente do meristema ...
Bittencourt Jr, Nelson S   +1 more
openaire   +3 more sources

Quantitative evaluation of sensitive skin by ANTERA 3D® combined with GPSkin Barrier®

open access: yesSkin Research and Technology, 2022
AbstractBackgroundAt present, there are many different evaluation methods for sensitive skin, including subjective, semisubjective, and objective evaluation. Various objective tests focus on assessing changes in barrier functions. It is anticipated that the ANTERA 3D®, in combination with GPSkin Barrier®, will provide better evaluation of sensitive ...
Anqi, S, Xiukun, S, Ai'e, X
openaire   +2 more sources

Dimorphic enantiostyly and its function for pollination by carpenter bees in a pollen‐rewarding Caribbean bloodwort

open access: yesAmerican Journal of Botany, Volume 113, Issue 2, February 2026.
Abstract Premise Flowers that present their anthers and stigma in close proximity can achieve precise animal‐mediated pollen transfer, but risk self‐pollination. One evolutionary solution is reciprocal herkogamy. Reciprocity of anther and style positions among different plants (i.e., a genetic dimorphism) is common in distylous plants, but very rare in
Steven D. Johnson   +5 more
wiley   +1 more source

Efeito de pre-tratamentos em botoes florais e influencia do 2,4-D no cultivo in vitro de anteras de cafeeiro (Coffea arabica L.)

open access: yesBioscience Journal, 2006
No Brasil, Coffea arabica apresenta poucos progressos quanto à aplicação da cultura de anteras. Foi avaliado o efeito dos pré-tratamentos por choque frio (4ºC), de calor (35ºC), e à temperatura ambiente de botões florais e a influência do regulador de ...
Elisangela Rodrigues Figueira   +5 more
doaj  

Ultrastructural calli analysis of Inga vera Willd. subsp. Affinis (DC.) T.D. Penn Análise ultraestrutural de calos de ingazeiro (Inga vera Willd. subsp. Affinis (DC.) T.D. Penn.)

open access: yesRevista Árvore, 2010
Subcellular changes are relevant to understand plant organogenesis and embryogenesis in the early stages of cell development. The cytology during cell development in tissue culture is however still poorly characterized.
Vanessa Cristina Stein   +5 more
doaj   +1 more source

Larnax altomayoense y Larnax chotanae (Solanaceae) two new species from montane forests of Northern Peru [PDF]

open access: yes, 2008
Se describen Larnax altomayoense y Larnax chotanae (Solanaceae) dos nuevas especies de los Bosques Montanos del Norte del Perú. Larnax altomayoense S. Leiva & Quipuscoa propia del Bosque de Protección del Alto Mayo, ruta entre el poblado de Aguas Verdes ...
Barboza, Gloria Estela   +2 more
core  

New circumscription of the tribe Leucocoryneae (Amaryllidaceae, Allioideae) [PDF]

open access: yes, 2014
Sobre la base de estudios morfológicos, anatómicos y filogenéticos de la subfamilia Allioideae, se presenta una nueva circunscripción de la tribu Leucocoryneae que comprende seis géneros americanos:Beauverdia, Ipheion, Leucocoryne, Nothoscordum ...
Arroyo Leuenberger, Silvia C.   +2 more
core   +1 more source

Contrasting effects of experimental warming in the initiation year and the flowering year on flower phenology of boreal understory species

open access: yesAmerican Journal of Botany, Volume 113, Issue 2, February 2026.
Abstract Premise High‐latitude plants initiate flower primordia at least 1 year before flowering. While impacts of rising temperatures on phenology in the flowering year are well studied, the effects of warmer temperatures in the initiation year (IY; the year before flowering) are virtually unknown.
Christa P. H. Mulder   +2 more
wiley   +1 more source

Efeito de citocininas, ANA e meio de cultura na indução de calos em anteras de Trepadeira-Jade

open access: yesOrnamental Horticulture, 2007
Trazida para o Brasil pelo paisagista Burle Marx, a Trepadeira-Jade (strongylodon macrobotrys) é uma espécie originária das Filipinas e possui beleza exótica.
Diogo Pedrosa Corrêa da Silva   +5 more
doaj   +1 more source

Descrição botânica e técnicas da polinização controlada do gergelim (Sesamum indicum L). [PDF]

open access: yes, 2011
bitstream/CNPA-2009-09/14335/1/COMTEC113 ...
ARRIEL, N. H. C.   +2 more
core  

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