SciELO - Scientific Electronic Library Online

 
vol.60 número231Determinação das qualidades físicas e sensoriais da carne de matrizes de descarte de frangos corteAditivos fitogênicos e butirato de sódio como alternativas aos antibióticos para leitões desmamados índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Archivos de Zootecnia

versión impresa ISSN 0004-0592

Resumen

OLIVEIRA, T.N. et al. Stability and Adaptability of Pennisetum sp. clones under pasture: Ocular spot. Arch. zootec. [online]. 2011, vol.60, n.231, pp.725-732. ISSN 0004-0592.  http://dx.doi.org/10.4321/S0004-05922011000300060.

The work was conducted at the Experimental Station of Itambé, of the Pernambuco State Agricultural Research Enterprise, to evaluate the adaptability and stability of Pennisetum sp. clones under pasture and Helminthosporium sp. incidence. The experimental design was randomized blocks, with 5 replicates and 16 treatments. Plots measured 5x5 m with one meter between rows spacing. Helminthosporium sp. incidence was studied by note scale according to spot presence on the leaves of the studied genotypes. With regards to genotype adaptability, Mineirão (0.31), Taiwan A 25 P 18 (0.50), SEA P 36 (0.28), SEA P 37 (0.38) and Gigante de Pinda P 73 (0.46) had regression coefficients below population average (β1i), indicating unfavorable environment adaptability. Genotypes Pusa Napier 1 P 25 (1.58), Pusa Napier 1 P 27 (1.55), Pusa Napier 1 P 28 (1.47), Pusa Napier 1 P 32 (1.28), Pusa Napier 1 P 33 (1.22), SEA P 35 (1.60), HV 241 (1.41) and Pioneiro (1.36) had better response in favorable environments, and Pusa Napier 1 P 31 and Roxo de Botucatu P 80 had ample adaptability. Hybrid HV 241 and Pioneiro had significant deviations from regression by the F test (p<0.05), indicating instability and unpredictability to environmental alterations. Genotypes Pusa Napier 1 P 31 and Roxo de Botucatu P 80 had ample adaptability, with resistance to Helminthosporium sp. and stable behavior at the Forest Zone of Pernambuco.

Palabras clave : Environment; Elephant grass; Genotypes; Helminthosporium sp.

        · resumen en Portugués     · texto en Portugués     · Portugués ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons