Consulta: creatorFacets:"Luna,María L"
Registros recuperados: 3
Data/hora: 10/06/2024 08:59:12

Gametophyte development and conservation of Ctenitis submarginalis (Dryopteridaceae) in Buenos Aires Province, Argentina
Provedor de dados: 51
Autores: Ramos Giacosa,Juan P; Gorrer,Daniel A; Giudice,Gabriela E; Luna,María L.
The spore germination and gametophyte development of Ctenitis submarginalis from Punta Lara Natural Reserve, Buenos Aires province were studied as a contribution to the conservation of the species in this protected area. Spores collected from natural populations were sowing in Dyer medium and germinated in six day with a percentaje of 88 % fifteen days after sowing. The germination is Vittaria type and the gametophyte development is Aspidium type. The gametophyte of Ctenitis submarginalis is cordate, with a deep notch and well developed and symmetric wings. The gametangia appear 50 days after sowing. The sporophyte emerges 190 days after sowing and two different hairs were observed in the first lamina. The in-vitro spore germination is a successful method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Ctenitis; Dryopteridaceae; Fern; Gametophyte.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400007

Modificaciones anatómicas y químicas en el leño de ejemplares del arbolado de la ciudad de La Plata (Buenos Aires) causadas por Laetiporus sulphureus (Basidiomycota, Polyporales)
Provedor de dados: 51
Autores: Murace,Mónica; Luna,María L; Ciuffani,Maria G. G; Perelló,Analía.
A nivel mundial, Laetiporus sulphureus es un importante patógeno causante de pudriciones castañas en el arbolado urbano. En la ciudad de La Plata, dicho hongo fue hallado en ejemplares de álamo blanco, fresno americano, eucalipto y paraíso gigante. El objetivo del trabajo fue analizar las alteraciones estructurales y químicas ocasionadas por L. sulphureus en el leño de álamo blanco, fresno americano, eucalipto y paraíso gigante con el propósito de dimensionar el riesgo que implica su deterioro para los habitantes, sus bienes y la diversidad arbórea de la ciudad. Los estudios anatómicos fueron realizados con microscopios óptico y electrónico de barrido. Los análisis químicos se llevaron a cabo en muestras de fresno y paraíso, según normas TAPPI. En todos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laetiporus sulphureus; Leño de latifoliadas; Pudrición castaña; Alteraciones químico-anatómicas; Laetiporus sulphureus; Hardwoods; Brown-rot; Chemical-anatomical alterations.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400003

In vitro spore culture and reproductive aspects of the annual fern Anogramma chaerophylla (Pteridaceae)
Provedor de dados: 51
Autores: Luna,María L; Yañez,Agustina; Ramos Giacosa,Juan Pablo; Gorrer,Daniel; Berrueta,Pedro C; Giudice,Gabriela E.
Anogramma chaerophylla belongs to a fern genus with annual sporophytes and potentially perennating gametophytes. In the studied area, Natural Reserve Punta Lara, the plants grow stressed mainly by pollution and the invasion of exotic species. As a part of a project on conservation of ferns inhabiting Buenos Aires province, the objectives of this work were to evaluate in Anogramma chaerophylla the conditions for in-vitro spore germination and to analyse the different stages of its reproductive cycle. Spores were sterilized in an aqueous solution 10 % of NaCIO during different times and then sown in Petri dishes with Murashige &amp;amp; Skoog medium, without the addition of sucrose. The dishes were kept under laboratory conditions, at 12 h light/ darkness...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anogramma chaerophylla; Micropropagation; Gametophyte; Tubercle; Ex-situ conservation.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000400010