Descripción de posibles híbridos naturales entre Nothofagus pumilio y N. antarctica en Patagonia Sur (Argentina)

Burns, Sarah Lilian; Cellini, Juan Manuel; Lencinas, María Vanessa; Pastur, Guillermo Martínez; Rivera, Stella Maris

doi:10.4067/s0717-92002010000100002

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…This shows presence of incomplete reproductive barriers within the subgenus even among species with different leaf habits (deciduous and evergreen). For subgenus Nothofagus , the natural hybridization process has been confirmed for the three evergreen species (Donoso & Atienza, 1983; Premoli, 1996b; Stecconi et al, 2004; Burns et al, 2010). Quiroga, Vidal & Premoli (2005) confirm the existence of hybridization between N. antartica and N. pumilio for forests in Argentina, and the possible introgression towards the gene pool of N. antarctica .…”

Section: Discussionmentioning

confidence: 76%

Hybrid identification in Nothofagus subgenus using high resolution melting with ITS and trnL approach

Solano

Anabalón

Encina

et al. 2019

PeerJ

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The genus Nothofagus is the main component of southern South American temperate forests. The 40 Nothofagus species, evergreen and deciduous, and some natural hybrids are spread among Central and Southern Chile, Argentina, New Zealand, Australia, New Guinea and New Caledonia. Nothofagus nervosa, Nothofagus obliqua and Nothofagus dombeyi are potentially very important timber producers due to their high wood quality and relative fast growth; however, indiscriminate logging has degraded vast areas the Chilean forest causing a serious state of deterioration of their genetic resource. The South of Chile has a large area covered by secondary forests of Nothofagus dombeyi. These forests have a high diversity of species, large amount of biomass and high silvicultural potential. This work shows a case of hybrid identification in Nothofagus subgenus in different secondary forests of Chile, using high resolution melting. Unknown samples of Nothofagus subgenus are genetically distinguishable with the ITS region of Nothofagus antarctica, Nothofagus nitida and N. obliqua species. It was not possible to distinguish between unknown samples of Andean versus coastal origin. Melting curves with ITS approach of unknown material are genetically similar, positioned between N. dombeyi and N. antarctica and distant from N. nitida. The unknown samples are genetically very close to Nothofagus dombeyi. This suggests the presence of hybrid individuality between species (N. dombeyi × N. antarctica) with the possibility of introgression towards the gene pool of N. antarctica, producing the deciduous foliage that is both present. The trnL locus has no distinction between the N. dombeyi and N. antarctica species, since a similar melting curve is present and equal Tm (80.00 °C). The trnL locus cannot be genetically distinguished from one unknown sample of Nothofagus to another, as highlighted in this study.

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Section: Discussionmentioning

confidence: 76%

Hybrid identification in Nothofagus subgenus using high resolution melting with ITS and trnL approach

Solano

Anabalón

Encina

et al. 2019

PeerJ

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“…(Dimitri y Milano 1950 cit. por Burns et al, 2010;Domínguez Díaz, 2012). Presenta hojas pequeñas (0,6 a 3,5 cm de largo), aovado-redondeadas a oblongas, con base acorazonada; bordes finamente dentados, lobulados y ondulados.…”

Section: Descripción Fenotípicaunclassified

Productos Forestales No Madereros Presentes en los Bosques de Ñirre (Nothofagus antarctica) de la Zona Sur Austral de Chile

Salinas¹,

Uribe²

2021

C&I Forestal

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Los bosques representan el entorno de gran parte del mundo rural y les proporcionan a sus pobladores una cantidad y variedad de Productos Forestales No Madereros (PFNM), que representan recursos alimenticios e insumos para diversos productos que esta población rural puede utilizar en forma ambiental y económicamente sostenible, para su propio beneficio o comercializar para un mejoramiento en sus condiciones de vida y sustento. Los bosques de ñirre forman parte del territorio de Aysén y su distribución coincide con la frontera urbana y la ganadera, donde han sido sometidos por décadas a disturbios derivados de la acción antrópica. En estos bosques se encuentran diferentes PFNM, que son importantes para la alimentación y medicina de comunidades rurales, algunos de estos productos son el calafate, la rosa mosqueta, la morilla, el musgo, las hierbas medicinales, los follajes y semillas de árboles nativos, entre otros. Este trabajo buscó investigar la diversidad actual de PFNM asociados a los bosques de ñirre de la zona sur austral de Chile, en base al conocimiento empírico y al uso de las comunidades. Para ello, se realizaron talleres participativos, con preguntas dirigidas a la expresión de las comunidades con respecto a los productos de cada sector, sus usos y utilidades para luego dar espacio a una priorización de los 3 PFNM de mayor importancia, tanto social como económica y cultural, en las comunidades consultadas. Se identificaron alrededor de 70 especies de uso no maderero presentes en los bosques de ñirre, con más de 100 diferentes usos para las personas, entre los que destacan usos medicinales, comestibles, tintóreos y ornamentales. Estas especies son colectadas por recolectores para consumo personal o comercialización. Las tres especies priorizadas por las comunidades fueron el hongo morchella, la frutilla silvestre y el calafate.

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“…como una entidad independiente, alejada de los probables progenitores. Al analizar la distribución de puntos en Dioscorea sp., la misma refleja una variación intraespecifica en algunos de sus rasgos vegetativos, probablemente producto de la amplia distribución altitudinal y sus variadas condiciones ambientales asociadas (Burns, Cellini, Lencinas, Martínez Pastur, Rivera, 2010).…”

Section: Discusión Y Conclusionesunclassified

Untitled

2019

LIL

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In the Sierras de Calilegua we recognized seven species of Dioscorea as part of their flora and an eighth entity that we named Dioscorea sp., which showed some morphological features similar to D. glomerulata and D. haumanii, possible progenitors of this, since they share the area of distribution in zones conducive to the phenomenon of hybridization. The aim of the present work was to analyze the floral morphology and leaf morphoanatomy of D. glomerulata, D. haumanii and Dioscorea sp. We worked with fresh and herborized material to which conventional techniques were applied. The results showed that the morphoanatomical characteristics of Dioscorea sp. are not intermediate to those of their probable parents. Principal components analysis allowed to group individuals of each entity separately. For this reason, we can conclude that this study places Dioscorea sp. in a stable and independent position.

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Descripción de posibles híbridos naturales entre Nothofagus pumilio y N. antarctica en Patagonia Sur (Argentina)

Cited by 6 publications

References 17 publications

Hybrid identification in Nothofagus subgenus using high resolution melting with ITS and trnL approach

Hybrid identification in Nothofagus subgenus using high resolution melting with ITS and trnL approach

Productos Forestales No Madereros Presentes en los Bosques de Ñirre (Nothofagus antarctica) de la Zona Sur Austral de Chile

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