SciELO - Scientific Electronic Library Online

 
vol.44 número1Análisis multivariado de las propiedades químicas de los suelos pardos erosionadosEstimación cuantitativa de la huella del carbono en el cultivo de la caña de azúcaren Villa Clara índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Centro Agrícola

versão On-line ISSN 0253-5785

Resumo

MONTALVAN DELGADO, Joaquín et al. Application of quantitative variables in the sampling method to evaluate the sugarcane rust brown. Ctro. Agr. [online]. 2017, vol.44, n.1, pp. 63-70. ISSN 0253-5785.

To develop a system that increase the precision in the resistance evaluations to sugarcane brown rust disease through the use of the quantitative sampling, six cultivars of differential behavior versus the disease (PR980, My5514, Ja60-5, C334-64, C323-68 and B4362) were studied. A random block experimental design with three replications was used in a heavy infections conditions obtained from the cultivar highly susceptible B4362. The evaluations were done at three and five months of age, in the three-thirds: bottom, half and top of the +1, +3 and +5 sugarcane plant leaves of 10 plants for replica. The variable total leaf area affected of the leaf and in each third was analyzed. In 2 cm2 were observed the long and wide of the biggest and more frequent pustule, the total of pustule and the area of the biggest and more frequent pustule, and the area percentage occupied by the most frequent pustule by each cm2 were determined. Variance analysis and Tukey tests as well as confidence intervals analysis to determine the coefficient to use as constant of the pustule width, due to the little variation of this parameter were realized. The +3 leaf represented the half infection of the incidence of the brown rust, constituting for it the most appropriate to carry out the observations and the half third. An equation was also obtained to calculate the area occupied by pustules with a high level of confidence

Palavras-chave : leaf area; Puccinia melanocephala; pustule; Sacharum sp..

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )

 

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