Results 91 to 100 of about 25,896 (208)

Ultrastructural modifications in Common ash tissues colonised by Chalara fraxinea

open access: yesPhytopathologia Mediterranea, 2012
Chalara fraxinea, the cause of ash dieback, is present in many European countries and constitutes a severe threat to Fraxinus spp. in forests, urban areas and nurseries. This study investigated tissue colonisation strategies of the parasite in Common ash
Elisa DAL MASO   +4 more
doaj   +1 more source

Evaluating the impact of Hymenoscyphus fraxineus in Trentino (Alps, Northern Italy): first investigations

open access: yesiForest - Biogeosciences and Forestry, 2017
The spread of Hymenoscyphus fraxineus has been causing great concern regarding the survival of European ash (Fraxinus excelsior) throughout Europe since the 1990s.
Giongo S   +4 more
doaj   +1 more source

Demography of persistent juveniles in Fraxinus excelsior

open access: yesEcography, 1992
Seedling emergence, survival, growth, and juvenile development of Fraxinus excelsior were followed over 10 yr in permanent plots m a dense Alnus‐Fraxinus woodland in the outer archipelago of Stockholm, Sweden Number of germinated seedlings varied ...
openaire   +1 more source

Investigations on the dormancy of Fraxinus excelsior L. buds II. Bud dormancy on shoots in various parts of the tree crown

open access: yesActa Societatis Botanicorum Poloniae, 2015
The course of the particular phases of dormancy of terminal buds from various parts of the tree crown of 12-year-old Fraxinus excelsior trees was investigated.
L. Witkowska-Żuk, W. Kozłowska
doaj   +1 more source

Ash (Fraxinus excelsior) seed quality in relation to seed deterioration under accelerated aging conditions [PDF]

open access: yes, 2013
This study was conducted to evaluate the response of ash (Fraxinus excelsior) seeds under accelerated aging test. The accelerated aging test was carried out at three different temperatures: 41, 43 and 45°C with four duration periods of 48, 72, 96, 144 ...
Ashraf, A, Habid, M
core   +1 more source

Perfil de sensibilización a aeroalérgenos en pacientes con rinitis alérgica

open access: yesRevista Alergia México
Objetivo: Determinar la prevalencia de rinitis alérgica e identificar los aeroalérgenos más frecuentes por medio de pruebas de reactividad cutánea en pacientes pediátricos y adultos con rinitis alérgica.
Joseline González-Martínez   +2 more
doaj   +1 more source

Soil drench of ethylenediurea (EDU) protects sensitive trees from ozone injury

open access: yesiForest - Biogeosciences and Forestry, 2011
Ozone (O3) is the air pollutant of major concern for vegetation. Levels in Mediterranean cities may exceed the criteria for vegetation protection.
Paoletti E   +3 more
doaj   +1 more source

Evaluation of flooding tolerance in two-year-old seedlings of common ash (Fraxinus excelsior L.) [PDF]

open access: yesفیزیولوژی محیطی گیاهی, 2016
The aim of this study was determining the physiological and morphological responses of two-year-old common ash (Fraxinus excelsior L.) seedlings to flooding stress. For this purpose, seedlings of common ash were examined in a completely randomized design
ghasem ali Parad   +4 more
doaj  

The Ontogenetic Structure of the Populations of Fraxinus excelsior in the Krolevetsko- Glukhovskiy Geobotany District

open access: yes, 2014
Вивчено та розглянуто онтогенетичну структуру ценопопуляцій Fraxinus excelsior у дев’яти угрупованнях лісової рослинності, типових для Кролевецько-Глухівського геоботанічного району.
Дегтярьов, Владислав   +1 more
core  

Sequencing The Genome Of Fraxinus Excelsior (European Ash)

open access: yes, 2013
Fraxinus excelsior (European ash) is a common tree in Europe with about 80 million individuals in the UK, and is of great ecological and economic value as a key forest species. Ash is diploid, with 2C = 46 chromosomes. Ash trees in Europe are currently threatened by the fungal pathogen Hymenoscyphus pseudoalbidus, which causes ash dieback.
Zohren, Jasmin   +5 more
openaire   +3 more sources

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