SciELO - Scientific Electronic Library Online

 
vol.60 issue231Improving the quality of beef burger by adding thyme essential oil and jojoba oilProcessing of diet for larvae of Pimelodus britskii author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Archivos de Zootecnia

On-line version ISSN 1885-4494Print version ISSN 0004-0592

Abstract

OLIVEIRA, T.N. et al. Estimative of repeatability coefficients, for leaf spot ocurrence in Pennisetum sp. clones. Arch. zootec. [online]. 2011, vol.60, n.231, pp.797-808. ISSN 1885-4494.  https://dx.doi.org/10.4321/S0004-05922011000300067.

The work was conducted at the Itambé Experimental Station, of the Pernambuco State Agricultural Research Enterprise, to obtain genetic parameters estimates and repeatability coefficient, under different methods, for leaf spot in Pennisetum clones. Sixteen Pennisetum clones were evaluated on a randomized block design, with five replicates, from March 2004 to May 2005, totaling seven evaluations. Repeatability coefficients were estimated by: analysis of variance, principal components - correlation matrix, principal components - covariance matrix, and structural analysis - correlation matrix. Maximum heritability for leaf spot was 95%. Repeatability coefficients the four methods ranged from 0.75 to 0.78 among. Seven evaluations were able to obtain determination a coefficient of 0.95 for all evaluated methods. No differences were observed among methods.

Keywords : Elephant-grass; Helminthosporium sp. Forage breeding; Genetic variability.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License