Látices retangulares

Bragantia, Feb 2019

This paper presents the analysis of a simple rectangular lattice with two replications of the basic group X and Y. It is recalled that the rectangular lattices permit the comparison of k(k+1) progenies in breeding programs and help to complete the series of numbers of progenies that can be compared through lattices and incomplete block designs.

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Látices retangulares

Látices retangulares(*)   Rectangular lattices     A. Conagin Engenheiro-agrônomo, Secção de Técnica Experimental e Cálcvlo, Instituto Agronômico de Campinas     RESUMO Com o uso dos látices retangulares, os experimentadores, geneticistas e melhoristas de plantas têm a possibilidade de preencher certas lacunas com relação ao número de itens a serem comparados. Uma análise completa é apresentada com detalhes, visando facilitar aos especialistas a utilização dêste tipo de delineamento. SUMMARY This paper presents the analysis of a simple rectangular lattice with two replications of the basic group X and Y. It is recalled that the rectangular lattices permit the comparison of k(k+1) progenies in breeding programs and help to complete the series of numbers of progenies that can be compared through lattices and incomplete block designs.     Texto completo disponível apenas em PDF. Full text available only in PDF format.     LITERATURA CITADA 1.  COCHRAN, W. G. & COX, G. M. Experimental designs. New York, John Wiley & Sons Inc., 1950. ix, 454 p.         [ Links ] 2.  HARSHBARGER, B. Near balance rectangular lattices. Virginia J. Sci. (n.s.) 2:13-27. 1951. (Reimpressão)        [ Links ] 3.  ________ Rectangular lattices. Blacksburg, Virginia agric. exp. Sta., 1947. 26 p. (Memoir n. 1)        [ Links ] 4.  ________ Triple rectangular lattices. Biometrics 5:1-13. 1949. (Reimpressão)        [ Links ] 5.  YATES, F. A further note on the arrangement of variety trials : quasi-latin squares. Ann. Eugen., Lond. 7:319-332. 1937.         [ Links ] 6.  ________ A new method of arranging variety trials involving a large number of varieties. J. agric. Sci. 26:424-455. 1936.         [ Links ] 7.  ________ The recovery of inter-block information in balanced incomplete block designs. Ann. Eugen., Lond. 10:317-325. 1940.         [ Links ] 8.  ________ The recovery of inter-block information in variety trials in three-dimensional lattices. Ann. Eugen., Lond. 9:136-156. 1939.         [ Links ]     Recebido para publicação em 24 de abril de 1954.     (*) O autor agradece ao Dr. Oswaldo S. Neves, Chefe da Sub Divisão de Plantas Texteis, por lhe ter permi-tido a utilização dos dados de uma experiência de competição de linhagens de algodoeiro.


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A. Conagin. Látices retangulares, Bragantia, 187-197, DOI: 10.1590/S0006-87051954000100016