Dendrometry and morphometry of Pinus pinea L. in Lower Provence (France): adaptability and variability of provenances

Court-Picon, Mona; Gadbin-Henry, Claude; Guibal, Frédéric; Roux, Maurice

doi:10.1016/j.foreco.2004.02.024

Cited by 39 publications

(18 citation statements)

References 22 publications

(29 reference statements)

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“…Por otra parte, los resultados de este trabajo trascienden de la escala regional porque coinciden con las conclusiones de trabajos recientes de análisis genéti-cos cuantitativos (Court-Picon et al, 2004;Gómez-Juan, 2004;Mutke et al, 2005) o moleculares (Fallour et al, 1997;Vendramin et al, en prensa), que encontraron una muy baja diferenciación entre poblaciones de pino piñonero a escala especie. La homogeneidad del material ensayado se tradujo en dos fenómenos asociados: un comportamiento homogéneo en cada sitio y una alta plasticidad fenotípica entre sitios, que resultó a su vez un carácter estable entre procedenciasaunque más que de plasticidad fenotípica como capacidad adaptativa del organismo (con las connotaciones ecológico-evolutivas que la bibliografía otorga a este concepto), se trata de una marcada sensibilidad común de todas las procedencias a factores ambientales, probablemente edáficos, que impidieron o limitaron el desarrollo y crecimiento del piñonero en algunos de los sitios.…”

Section: Discussionunclassified

Absence of ecotypic differentiation in Mediterranean stone pine in a Spanish inland region

Alonso

Regneri²,

Sanchez³

2007

For. syst.

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IntroducciónEn la selección de materiales de base para obtener semillas o plantas con unos requisitos mínimos de calidad genética y de adaptación para su uso en la regeneración artificial o repoblación forestal, la actuación del gestor forestal está condicionada por el marco legislativo de la Unión Europea, España y las Comunidades Autónomas así como por el avance del conocimiento científico y técnico en las últimas décadas. En España, el actual marco legal se define en el Real Decreto 289/2003Decreto 289/ (B.O.E., 2003, de 7 de marzo, sobre comercialización de los materiales forestales de reproducción. Su artículo 2.l centra en sus apartados 2º y 4º el objeto del presente trabajo: la definición de ResumenLa presencia de masas relícticas de pino piñonero sobre cuestas margosas de elevado pH, dentro de la región de procedencia Meseta Norte ha dado lugar a un manejo separado de su material forestal de reproducción por una posible adaptación diferenciada que le conferiría un especial interés para la restauración forestal de estaciones análogas, definiéndose para tal fin unos rodales selectos en las mejores masas sobre cuesta. En 1998, se instaló en esta región un ensayo comparativo de materiales forestales de reproducción de esta región de procedencia de Pinus pinea en varios sitios de ensayo. Tras ocho años, se estudia el comportamiento de los distintos lotes de planta obtenidos de semilla de siete rodales selectos y se compara con dos fuentes de semilla testigo, analizando el arraigo y la supervivencia inicial, el cambio de fase juvenil-adulto y el crecimiento en altura y en diámetro. Contrasta la gran plasticidad fenotípica observada entre sitios de ensayo frente a la diferenciación casi nula entre rodales de origen, al menos en esta fase inicial de establecimiento de la masa. Estos resultados no apoyan el manejo por separado de los materiales de reproducción de una misma categoría, justificándose la mezcla y el manejo común de los lotes de semilla cosechados en los diferentes rodales selectos de la misma región de procedencia.Palabras clave: Pinus pinea L., material forestal de reproducción, ensayo comparativo, plasticidad fenotípica. Abstract Absence of ecotypic differentiation in Mediterranean stone pine in a Spanish inland regionThe relicts of stone pine forests on marly or even gypsiferous slopes with high pH values induced the hypothesis of a possible genetic adaptation to this site types, marginal for a species normally growing on siliceous sandy plains. Actually, the forest reproductive materials from selected seed stands on those slopes are used preferably for forestations on analogous sites. In 1998, a multi-site comparative test was established with plant lots obtained from seven selected seed stands and two non-selected seed sources. At least up to the age of eight years, the saplings did not show any significant differentiation among basic materials in outplanting success, survival, vegetative phase change, height or diameter growth, whereas a common, strong phenotypic plasticity among test sites ...

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Section: Discussionunclassified

Absence of ecotypic differentiation in Mediterranean stone pine in a Spanish inland region

Alonso

Regneri²,

Sanchez³

2007

For. syst.

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“…The use of a temperature of 20°C is comparable to other germination studies in which temperatures varied between 20 and 23°C (Trabaud and Oustric 1989). A seed was considered to have germinated when the radicle could be seen with the naked eye (Côme 1970). Seeds were inspected for germination for 63 days in total, using the method proposed by Martínez-Sánchez et al (1995), according to which the experiment ends after approximately 10 days without germination.…”

Section: Thermal Shock Treatmentsmentioning

confidence: 99%

“…We calculated the percentage of seed germination and the average seed germination time after the thermal treatments for each of the five replicates of 20 seeds per treatment in each provenance. The average germination time (t m ) was calculated using the following formula (Côme 1970):…”

Section: Thermal Shock Treatmentsmentioning

confidence: 99%

“…Moreover, extremely high variability in seed mass exists within and among P. pinaster provenances (Escudero et al 2000;Zas and Sampedro 2015;Zas et al 2013), similarly to other pine species (e.g. Court-Picon et al 2004;Ganatsas et al 2008;Liu et al 2013;Parker et al 2006). Seed mass is often positively associated with post-fire seedling establishment, growth, and survival (Álvarez et al 2007;Bladé and Vallejo 2008;Escudero et al 2000), but no consensus exists on the relationship between seed mass and germination rates following fire (Escudero et al 2002;Hanley et al 2003;Casal 1995, 2004;Vasques et al 2012).…”

Section: Introductionmentioning

confidence: 95%

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Provenance and seed mass determine seed tolerance to high temperatures associated to forest fires in Pinus pinaster

Calvo

Hernández

Valbuena

et al. 2015

Annals of Forest Science

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Abstract& Key message We show that Pinus pinaster provenance affects both seed germination and seedling recruitment after fire. This information is crucial for managers to select the best seed-provisioning populations when implementing reforestation programs to assist the natural post-fire regeneration of the species. & Context Reforestation programs to assist natural regeneration of maritime pine (Pinus pinaster Aiton) forests after wildfires very often neglect the fire-adaptive traits of the selected seed-source populations, threatening future stand resilience to fire. & Aim We investigate the influence of seed provenance and weight on the rate and timing of seed germination, and on early seedling growth of P. pinaster after fire. & Methods We simulated conditions during fire by experimentally submitting free seeds from three P. pinaster provenances with contrasting levels of serotiny (from <6 to >58 % of trees bearing serotinous cones within the population) to six combinations of temperature and exposure time. We fitted GLMs and LMs to test for differences among provenances in reproductive performance after the thermal shock treatments. & Results Heavy seeds derived from the very low serotinous population exhibited greater tolerance to heat (higher germination rate, lower germination time, and higher seedling length) than the lighter ones from the highly serotinous population. & Conclusion The seeds enclosed in serotinous cones are, however, the only ones protected from high fire-induced temperatures, delaying release until favourable post-burn conditions for germination and seedling establishment. Therefore, selecting the best fire-adapted populations with the optimal serotiny level as seed-provisioning sources should be encouraged to ensure forest regrowth in fire-prone areas.

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“…While an unpredictable needle shedding may not have any consequence on pine survival (Glynn and Lindelöw, 2002), the damage in the living tissues of the shoot inner bark will have Article published by EDP Sciences fatal consequences for the whole-tree survival. Therefore, the further bud-burst will be severely affected (Court-Picon et al, 2004) in species without epicormic resprouting below the affected zones (Del Tredici, 2001). For these reasons, several authors have placed a primary emphasis on elucidating the degree of resistance of the inner bark under frost temperatures in conifer species (Jonsson et al, 2004, Luoranen et al, 2004.…”

Section: Introductionmentioning

confidence: 99%

Évaluation des dégâts du froid dans les troncs de Pinus sylvestris L. par la mesure de la fluorescence de la chlorophylle dans le chlorenchyme cortical de l’écorce

2008

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Abstract• Several techniques were used to investigate the threshold minimum temperature inducing severe frost damage during winter in Scots pine (Pinus sylvestris L.) needles and stems from southern provenances in the Iberian Peninsula.• Chlorophyll (Chl) fluorescence, electrolyte leakage (EL), visual scoring (VS), and the normalized difference vegetation index (NDVI) were compared.• Chl fluorescence, and in particular the maximum potential photosystem II (PSII) efficiency -estimated through the dark-acclimated F V /F M ratio -, was found to be a simple, non-destructive indicator of freezing tolerance in needles, as expected.• Moreover, the existence of a Chl-containing tissue, the cortical bark chlorenchyma, allowed us the use of Chl fluorescence as a new non-destructive indicator of frost damage in live tissues of Pinus sylvestris L. stems.• Freezing tolerance values of southern provenances are compared with those found by other authors in the northern distribution limit of the species.Mots-clés : fluorescence de chlorophylle / chlorenchyme de l'écorce corticale / dégâts du froid Résumé -Évaluation des dégâts du froid dans les troncs de Pinus sylvestris L. par la mesure de la fluorescence de la chlorophylle dans le chlorenchyme cortical de l'écorce.• Plusieurs techniques ont été utilisées pour rechercher les seuils minima de température qui occasionnent des dommages dans les aiguilles et les troncs de pin sylvestre (Pinus sylvestris L.) de provenances méridionales de la péninsule Ibérique.• Les résultats obtenus à partir de la mesure de la fluorescence de chlorophylle (Chl), de la libéra-tion d'électrolytes (EL), d'une évaluation visuelle (VS) et d'un indice d'activité végétale normalisé (NDVI) ont été comparés.• La fluorescence de chlorophylle, et en particulier l'efficience maximale du photosystème II (PSII) qui est estimée à partir du rapport F V /F M des échantillons acclimatés à l'obscurité, a été confirmée comme une méthode simple et non destructive pour estimer la tolérance au froid des aiguilles de pin, comme cela avait déjà mis en évidence par d'autres études.• En outre, l'existence d'un tissu chlorophyllien dans la partie corticale de l'écorce du tronc a permis l'emploi avec succès de la mesure fluorescence de chlorophylle comme nouvel indicateur non destructif de la résistance au froid des tissus vivants des troncs de Pinus sylvestris L.• Ces estimations de tolérance au froid, trouvées pour des provenances méridionales de Pinus sylvestris L., ont été comparées avec celles rapportées par d'autres auteurs pour des provenances plus septentrionales.

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Dendrometry and morphometry of Pinus pinea L. in Lower Provence (France): adaptability and variability of provenances

Cited by 39 publications

References 22 publications

Absence of ecotypic differentiation in Mediterranean stone pine in a Spanish inland region

Absence of ecotypic differentiation in Mediterranean stone pine in a Spanish inland region

Provenance and seed mass determine seed tolerance to high temperatures associated to forest fires in Pinus pinaster

Évaluation des dégâts du froid dans les troncs de Pinus sylvestris L. par la mesure de la fluorescence de la chlorophylle dans le chlorenchyme cortical de l’écorce

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