Results 21 to 30 of about 78,040 (217)

Experimental admixture among geographically disjunct populations of an invasive plant yields a global mosaic of reproductive incompatibility and heterosis

open access: yesJournal of Ecology, Volume 109, Issue 5, Page 2152-2162, May 2021., 2021
Biogeographic patterns of variation in reproductive success in an invasive weed with allopatric distribution. Abstract Invasive species have the ability to rapidly adapt in the new regions where they are introduced. Classic evolutionary theory predicts that the accumulation of genetic differences over time in allopatric isolation may lead to ...
Ramona E. Irimia   +10 more
wiley   +1 more source

Il substrato emotivo della modernità

open access: yesSocietàMutamentoPolitica, 2021
Due to the recent pandemic, the sociology of emotions gained renewed relevance. The state of exception through which we have passed has uncovered some fundamental structures of our societies and allows to ask what is the ‘normality’ of the relationship between emotionality and social rationality in our time.
openaire   +2 more sources

Caracterização física de substratos para plantas [PDF]

open access: yesBragantia, 2014
A caracterização física de substratos para plantas no Brasil ainda é incipiente, embora, apenas com a definição adequada de métodos confiáveis seja possível padronizar insumos e fornecer as recomendações necessárias aos produtores. Objetivou-se caracterizar fisicamente seis substratos para plantas e comparar métodos prescritos pelo Ministério da ...
Zorzeto, Thais Queiroz   +3 more
openaire   +3 more sources

Caracterização física de dois substratos orgânicos para plantas e a estimativa da umidade por meio da reflectometria no domínio do tempo Physical characterization of two organic substrates for plants and the estimate of water content through the time domain reflectometry

open access: yesCiência Rural, 2009
O crescente uso de substratos na produção agrícola e no cultivo em ambiente protegido, promove produção em grande escala. Nesse sentido, as caracterizações químicas, biológicas e físicas desses materiais se fazem necessárias à proposição e à avaliação de
Roger Manuel Mestas Valero   +2 more
doaj   +1 more source

Linnaeus's folly – phylogeny, evolution and classification of Sedum (Crassulaceae) and Crassulaceae subfamily Sempervivoideae

open access: yesTAXON, Volume 69, Issue 5, Page 892-926, October 2020., 2020
Abstract Sedum, containing approximately 470 species, is by far the largest genus of Crassulaceae. Three decades of molecular phylogenetic work have provided evidence for the non‐monophyly of Sedum and many more of the 30 genera of Crassulaceae subfam. Sempervivoideae.
Thibaud F.E. Messerschmid   +3 more
wiley   +1 more source

Substratos alternativos ao xaxim e adubação de plantas de orquídea na fase de aclimatização Alternative substrates to xaxim and fertilization on orchids plantlets acclimatization phase

open access: yesCiência Rural, 2007
Objetivou-se estudar substratos e adubação em plantas de orquídea da espécie C. loddgesii "Alba" x C. loddgesii "Atibaia". Plantas oriundas de cultivo in vitro foram transplantadas para bandejas coletivas contendo pó de xaxim e aclimatizadas em casa de ...
Aparecida Gomes de Araujo   +4 more
doaj   +1 more source

Vellozioid roots allow for habitat specialization among rock‐ and soil‐dwelling Velloziaceae in campos rupestres

open access: yesFunctional Ecology, Volume 34, Issue 2, Page 442-457, February 2020., 2020
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Plant growth on harsh substrates (habitat specialization) requires specific traits to cope with stressful conditions. We tested whether traits related to nutrient acquisition (root colonization by fungal symbionts, and plant morphological and ...
Anna Abrahão   +8 more
wiley   +1 more source

Efeito de métodos de escarificação na superação da dormência de sementes e de substratos na germinação e no desenvolvimento da grápia (Apuleia leiocarpa) Effects of scarification methods on dormancy break of seeds and of substrates on germination and on development of grápia (Apuleia leiocarpa)

open access: yesCiência Rural, 1997
A grápia (Apuleia leiocarpa) apresenta dificuldades de propagação via sementes, devido a sua germinação demorada e irregular, causada pela impermeabilidade do tegumento.
Fernando Teixeira Nicoloso   +3 more
doaj   +1 more source

DIFFERENT SUBSTRATA EFFECTS IN THE GERMINATION OF Ochroma pyramidale (CAV. EX LAM.) URB. (BOMBACACEAE)

open access: yesCiência Florestal, 2010
The objective of this paper was to analyze the effect of different substrata in the germination of Ochroma pyramidale (Cav. ex Lam.) Urb. (Bombacaceae).
Fabrízia de Oliveira Alvino   +1 more
doaj   +1 more source

In vitro germination and acclimatization of cambui tree type seedlings

open access: yesCiência Rural, 2014
There are few reports in literature on the in vitro behavior of cambui tree (Myrciaria tenella O. Berg) and acclimatization conditions. The aim of this study was to evaluate the effect of culture media on in vitro germination and the effect of different ...
Ana da Silva Lédo   +4 more
doaj   +1 more source

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