Étude de la croissance et du développement chez le frêne commun, <i>Fraxinus excelsior</i>, cultivé en conditions contrôlées

Collin, Pascal; Millet, Bernard; Barnola, P.

doi:10.1139/b95-159

Cited by 9 publications

(5 citation statements)

References 4 publications

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“…Vegetative buds begin to swell in early March and open through May, although understorey trees usually begin earlier and can have fully expanded leaves by the beginning of May (Wardle 1961). Ash is determinate and all leaves are preformed in the bud so expansion is rapid and is complete within c. 100 days, with formation of terminal buds in July and no further branch elongation for 9-11 months (Collin, Badot & Millet 1995;Kerr 2002;Kerr & Cahalan 2004). However, in shoots that are physiologically young the buds can continue to form new leaves all through the summer, remaining green and succulent, and lacking protective scales and hairs (Wardle 1961).…”

Section: Phenologymentioning

confidence: 99%

Biological Flora of the British Isles:Fraxinus excelsior

Thomas

2016

Journal of Ecology

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Summary1. This account presents information on all aspects of the biology of Fraxinus excelsior L. (Ash) that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of the British Isles: distribution, habitat, communities, responses to biotic factors, responses to environment, structure and physiology, phenology, floral and seed characters, herbivores and disease, history, and conservation. 2. Fraxinus excelsior is a large forest tree, native throughout the main islands of Britain and much of mainland Europe. Seedlings are shade tolerant, but adults are not so it tends to be an intermediate successional species, invading gaps in mixed stands rather than forming extensive pure stands. Ash grows on a wide range of soils but is commonest on nutrient-rich soils with a high base status and pH > 4.2, and is at its best on dry calcareous screes and fertile alluvial soils. 3. Fraxinus excelsior is trioecious or subdioecious with male, hermaphrodite and female flowers and trees. Seed production is prolific with periodic higher producing mast years. Seeds are primarily wind-dispersed, but they can float and be moved considerable distances along waterways. Germination is delayed by dormancy until usually the second spring after being shed. 4. Ash is tolerant of drought, but intolerant of spring frosts and so is predicted to fare well under current climate change scenarios, and indeed has recently been expanding in range in Europe. However, ash health and survival is currently seriously compromised by ash dieback caused by the fungus Hymenoscyphus fraxineus (Chalara fraxinea) that has the potential to kill all but a very few resistant trees. Moreover, the emerald ash borer beetle Agrilus planipennis, a serious pest of ash species in N. America, has reached Europe (though not yet the British Isles) and poses an equally if not more serious long-term threat to ash.

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Section: Phenologymentioning

confidence: 99%

Biological Flora of the British Isles:Fraxinus excelsior

Thomas

2016

Journal of Ecology

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“…Collin et al (1995) recorded continuous root growth under controlled conditions (14 h light/10 h dark; 27 AE 1 and 19 AE 1 8C). The change in the permeability of ash roots in response to drought has been studied by Wiersum and Harmanny (1983).…”

Section: Root Growthmentioning

confidence: 99%

A review of site factors affecting the early growth of ash (Fraxinus excelsior L.)

Kerr

Cahalan

2004

Forest Ecology and Management

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“…mâle. (Bompar 1974), chez Citrus aurantium L. (Nozeran et al 1983), chez Fraxinus excelsior L. (Collin et al 1995) ou chez Malus spp. (Lauri et Térouanne 1995).…”

Section: Relation Entre La Durée D'allongement Et La Structure Des Pounclassified

Modalités d'allongement et morphologie des pousses annuelles chez le noyer commun, Juglans regia L. 'Lara' (Juglandaceae)

Sabatier¹,

Barthélémy²,

Ducousso³

et al. 1998

Can. J. Bot.

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Chez Juglans regia L. 'Lara', des observations bihebdomadaires de l'allongement de trois types morphologiques de pousses annuelles florifères (monocycliques, avec ou sans petit axe à développement immédiat, et bicycliques) en fonction de quatre types de rameaux porteurs ont été réalisées sur des arbres âgés de 4 ans, au cours d'une saison de croissance, dans le Sud-Ouest de la France. Chez les arbres étudiés, l'influence du type de rameau porteur apparaît essentiellement sur les dates de début d'allongement des pousses annuelles monocycliques. La longueur des pousses porteuses n'est pas corrélée à la longueur des pousses monocycliques nouvellement émises, mais elle l'est avec la longueur des pousses bicyliques portées. Chez les pousses florifères bicycliques, deux vagues d'allongement successives, l'une printanière et l'autre estivale ont été décrites au cours d'un cycle annuel de croissance. L'interruption intra-annuelle de l'allongement se traduit par la présence d'une série de cataphylles séparées par des entre-noeuds courts. Les pousses printanières se différencient des pousses estivales par la structure et le nombre d'organes foliaires émis. L'influence de la durée d'allongement, de la longueur et du nombre de feuilles de la pousse printanière sur l'édification d'un rameau acrotone à développement immédiat suivie ou non d'une pousse estivale a été étudiée.Abstract: Shoot extension during a growth season has been investigated in three morphological types of floriferous annual shoots (monocyclic with or without a small axis with immediate development and bicyclic) on four types of parental branches within 4-year-old Juglans regia L. 'Lara' growing in the south-west of France. The morphological type of parental branches has an influence on the time of inception of monocyclic shoot extension. No correlation has been found between the parental shoot length and monocyclic shoot length, while a positive correlation has been found between parental shoot length and bicyclic shoot length. Bicyclic annual shoots expand during two successive flushes : in spring and summer, respectively. The intra-annual resting phase results in the presence of a series of cataphylls in the median part of the shoots. Spring shoots and summer shoots may be distinguished by variations in form and in number of foliar organs. Annual shoots exhibiting an acrotonic axis with immediate development or a summer shoot generally possess greater extension periods and lengths of spring shoots than the unbranched ones.

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Étude de la croissance et du développement chez le frêne commun, Fraxinus excelsior, cultivé en conditions contrôlées

Cited by 9 publications

References 4 publications

Biological Flora of the British Isles:Fraxinus excelsior

Biological Flora of the British Isles:Fraxinus excelsior

A review of site factors affecting the early growth of ash (Fraxinus excelsior L.)

Modalités d'allongement et morphologie des pousses annuelles chez le noyer commun, Juglans regia L. 'Lara' (Juglandaceae)

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