SciELO - Scientific Electronic Library Online

 
vol.4 número10Aves ribereñas de los ecosistemas costeros de Tuxpan, Veracruz, MéxicoRendimiento y calidad nutracéutica de tomate en sustratos orgánicos índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • No hay artículos similaresSimilares en SciELO

Compartir


Ecosistemas y recursos agropecuarios

versión On-line ISSN 2007-901Xversión impresa ISSN 2007-9028

Resumen

ALVAREZ-HOLGUIN, Alan; MORALES-NIETO, Carlos Raúl; MELGOZA-CASTILLO, Alicia  y  MENDEZ-ZAMORA, Gerardo. Germination of sideoats grama (Bouteloua Curtipendula) genotypes under different osmotic pressures. Ecosistemas y recur. agropecuarios [online]. 2017, vol.4, n.10, pp.161-168. ISSN 2007-901X.  http://dx.doi.org/10.19136/era.a4n10.898.

The objective was to evalúate the germination rate of sideoats gamma (Bouteloua curtipendula) geno types under different osmotic pressure levels. The genotypes used were El Reno (Re), Niner (Ni), Vaughn (Va), Kansas-6113 (K-13), Kansas-6107 (K-07), ecotype 689 (E-689) and ecotype 592 (E-592). The osmotic agent employed was mannitol. The osmotic pressure levels were; 0.0, -0.7, -1.4 and -2.1 Megapascals (MPa). The variables evaluated were germination percentage (GE), germination speed Índex (GSI), radíele length (RL) and plumule length (PL). The native genotypes (E-592 and E-689) and VA showed the highest resistance to water stress. The genotype K-07 presented the lowest GE and GSI, while Ni did not germinate under -2.1 MPa. Based on the results, E-592, E-689 and Va can be considered for their inclusión on grassland rehabilitation programs. However, due to their speed germination it is recommended to use them in mixture with Re or K-13.

Palabras llave : Ecotype; mannitol; megapascals; native grass; water stress.

        · resumen en Español     · texto en Español     · Español ( pdf )