Results 51 to 60 of about 25,651 (256)

Scarification and gibberellic acid in the germination and initial development of pindaíba (Duguetia lanceolata ST Hil)

open access: yesRevista Agrogeoambiental, 2020
Duguetia lanceolata St. Hill is a species native to the Atlantic Forest. Its seeds contain substances that have a germination inhibiting effect. In view of the above, the present work aimed to evaluate the influence of gibberellic acid and mechanical ...
Kamila Cristina de Credo Assis   +5 more
doaj   +1 more source

Influence of ground substrate on establishment of reindeer lichen after artificial dispersal [PDF]

open access: yes, 2007
Methods to improve the recovery of reindeer lichen after soil disturbance or overgrazing are being sought for areas where reindeer are herded. The effects of four substrates – mineral soil, moss, twigs and pine bark – on the establishment of lichen ...
Bergsten, Urban   +3 more
core   +2 more sources

Stable incidence rates of tuberculosis (TB) among human immunodeficiency virus (HIV)-negative South African gold miners during a decade of epidemic HIV-associated TB.

open access: yes, 2003
During the last decade, annual tuberculosis (TB) case-notification rates increased 4-fold, to >4000 cases/100000 person-years, in the study workforce, among whom prevalence of human immunodeficiency virus (HIV) was 30% in 2000.
Charalambous, Salome   +6 more
core   +1 more source

SUPERAÇÃO DA DORMÊNCIA E INFLUÊNCIA DO CONDICIONAMENTO OSMÓTICO EM SEMENTES DE Pterogyne nitens TUL. (FABACEAE)

open access: yesRevista Caatinga, 2011
The aim of this paper was to evaluate the influence of priming and efficiency of two methods of scarification on dormancy break of brave peanut seeds.
KELLY PELLIZZARO   +4 more
doaj  

Evaluation of methods to overcome dormancy in the germination of Ormosia arborea (Vell.) Harms [PDF]

open access: yesBiotemas, 2011
The work aimed to evaluate the effect of different methods to overcome dormancy in the germination of Ormosia arborea. The following treatments were used: 72h of water immersion; chemical scarification with 100% sulfuric acid; mechanical scarification ...
Walquíria Fernanda Teixeira   +4 more
doaj  

Colour-Based Binary Discrimination of Scarified Quercus robur Acorns under Varying Illumination

open access: yesSensors, 2016
Efforts to predict the germination ability of acorns using their shape, length, diameter and density are reported in the literature. These methods, however, are not efficient enough.
Mirosław Jabłoński   +4 more
doaj   +1 more source

Optimising the seed production cycle of Delphinium elatum L. : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Plant Biology at Massey University, Palmerston North [PDF]

open access: yes, 2005
Delphinium elatum L. (Ranunculaceae) hybrids are developed by Dowdeswell's Delphiniums located at 692 Brunswick Road. Wanganui (www.delphinium.co.nz), who grow delphiniums for seed export. Development of new cultivars is important for commercial purposes,
Bedford, Katharine
core  

EMERGÊNCIA E ESTABELECIMENTO DE PLÂNTULAS DE Guazuma ulmifolia LAM. EM FUNÇÃO DE DIFERENTES TRATAMENTOS PRÉ-GERMINATIVOS

open access: yesCiência Florestal, 2016
This study tested the influence of mechanical and thermal scarification methods on emergence and establishment of Guazuma ulmifolia seedlings. Seeds were subjected to pre-germination treatments of (1) mechanical scarification (sandpaper),
Diellen Librelon da Silva   +4 more
doaj  

Anatomical characterization of the wood of Faveira (Parkia gigantocarpa Ducke), occurring in the Brazilian Amazon [PDF]

open access: yes, 2012
The Amazon has the largest diversity in fauna and flora in the world. So much wealth attracts the attention of many who want to preserve and sustainably exploit.
Ferreira, Cassiana Alves   +3 more
core  

Disruption of TNFα/TNFR1 function in resident skin cells impairs host immune response against cutaneous vaccinia virus infection [PDF]

open access: yes, 2012
One strategy adopted by vaccinia virus (VV) to evade the host immune system is to encode homologs of TNF receptors (TNFR) that block TNFα function. The response to VV skin infection under conditions of TNFα deficiency, however, has not been reported.
Dubin, Krista   +9 more
core   +1 more source

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