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	Provedor de dados Biol. Res. (2) Autor Peña-Valdivia,Cecilia B (2) Celis Velázquez,Raquel (1) García-Nava,Rodolfo (1) Humberto Vaquera,H (1) Juárez Muñoz,Juana (1) Meza Rangel,Joel (1) R,J Rogelio Aguirre (1) Ramírez-Tobías,Hugo M (1) Sánchez-Urdaneta,Adriana B (1) Trejo,Carlos (1) Mais... Palavra-chave Base water potential (1) CAM (1) Drought (1) Endodermis (1) Germination (1) Hydrotime model (1) Maguey (1) Protoderm (1) Seedlings (1) Water potential (1) Xylem (1) Mais... Tipo do documento Journal article (2) Ano 2014 (1) 2010 (1) País Chile (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Anatomical root variations in response to water deficit: wild and domesticated common bean (Phaseolus vulgaris L) Biol. Res. Peña-Valdivia,Cecilia B; Sánchez-Urdaneta,Adriana B; Meza Rangel,Joel; Juárez Muñoz,Juana; García-Nava,Rodolfo; Celis Velázquez,Raquel. Root anatomical responses to water deficit are diverse and regulation of water uptake strongly depends on plant anatomy. The ancestors of common bean (Phaseolus vulgaris L.) cultivars are the wild common beans. Because wild beans adapt and survive well in theon atural environment, it is hypothesized that wild common bean roots are less affected than those of domesticated beans at low substrate water potential (ψW). A wild common bean accession from Chihuahua Mexico and cv. Bayomex were studied. Seedlings with a mean root length between 3 and 4 cm were maintained for 24 h in vermiculite at ψW of -0.03 (well hydrated), -0.65, -1.48 and -2.35 MPa (partially dry). Ten anatomical characteristics of differentiation and cell division in root... Tipo: Journal article Palavras-chave: Endodermis; Protoderm; Seedlings; Water potential; Xylem. Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400006 Seed germination of Agave species as influenced by substrate water potential Biol. Res. Ramírez-Tobías,Hugo M; Peña-Valdivia,Cecilia B; Trejo,Carlos; R,J Rogelio Aguirre; Humberto Vaquera,H. BACKGROUND: Plants of Agave spp. perform Crassulacean acid metabolism (CAM) and are highly drought-tolerant, but little is known concerning seed germination under low water availability. The aim of this study was to assess the effect of substrate water potential (ΨW) on seed germination and contrast hydrotime parameters of seven valuable and commercially-important Agave species from different geographical distributions and climatic regions of Mexico. Our hypothesis was that seed germination of Agave species is not affected by low water availability independently of seed biomass and the climate of their distribution area. RESULTS: Seed germination (at 25°C and in the dark) between 85 and 100% for all species occurred within 80 - 180 h at -0.03 MPa... Tipo: Journal article Palavras-chave: Base water potential; CAM; Drought; Germination; Hydrotime model; Maguey. Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100011 Registros recuperados: 2 Primeira ... 1 ... Última

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