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| Mercado,Maria I; Coll Aráoz,Maria V; Brandán De Weht,Celia I; Ponessa,Graciela I; Grau,Alfredo. |
| Mycorrhizal associations in Smallanthus sonchifolius (Poepp. & Endl.) H. Robinson (Asteraceae), Yacon, an ancient Andean crop and Smallanthus macroscyphus (Baker ex Martius) A. Grau, wild yacon, a close wild relative are described for the frst time. Yacon fbrous roots growing under feld conditions have high levels of colonization by arbuscular mycorrhizal fungi (86 %). Other fungi colonizing roots included dark septate endophytes (45 %) and unidentifed fungi that are probably saprophytic (25 %) were observed. Only 9% of the samples analyzed were not colonized by any type of fungi. Glomus, Acaulospora, Scutellospora, Gigaspora and Pacispora were the main genera of arbuscular mycorrhiza identifed. A similar high degree of mycorrhizal colonization was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Smallanthus sonchifolius; Smallanthus macroscyphus; Mycorrhizas; Arbuscular mycorrhizas; Dark septate endophytes. |
| Ano: 2013 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200002 |
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| Quiroga,M. Paula; Premoli,Andrea C; Grau,Alfredo; Malizia,Lucio. |
| Congener species with incomplete reproductive barriers that coexist along environmental gradients may be prone to ecological divergence, in spite of the potential for hybridization in sympatry. We analyzed distribution patterns of isozymes, plastid, and nuclear DNA sequences at regional and local scales in three timber Cedrela species of the subtropics in the northern Argentina (Cedrela angustifolia, C. balansae, and C. saltensis), to test whether populations of distinct species have diverged in montane habitats in relation to their ecological characteristics. Cedrela balansae and C. angustifolia can be identified by diagnostic isozyme alleles. Nuclear ITS sequences yielded intraindividual polymorphism; ambiguous bases were shared between C. balansae and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argentina; Cedrela angustifolia; Cedrela balansae; Cedrela saltensis; Yungas. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932016000200003 |
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| Slanis,Alberto C; Perea,María C; Grau,Alfredo. |
| Se presenta la revisión taxonómica del género Caiophora (Loasaceae) en Argentina, sesenta años después del único tratamiento completo para el país. En Argentina, Caiophora está representado por 15 especies (seis endémicas) que se distribuyen en las cadenas montañosas del noroeste y centro del país. Se presenta una clave para identificar las especies, junto con sinonimia actualizada, descripciones morfológicas detalladas, datos sobre distribución geográfica, e ilustraciones. Se describe una nueva especie, Caiophora sleumerii, se revalida el nombre C. spegazzinii y C. canarinoides se registra por primera vez para Argentina. Se designan 10 lectotipos para Caiophora aconquijae, C. angustisecta, C. coronata, C. dumetorum, C. orbignyana, C. pycnophylla, C.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caiophora; Flora argentina; Loasaceae; Nomenclatura; Taxonomía. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932016000200001 |
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