Abstract
We determined the chromosome number of 52 accessions of Paspalum from the germplasm collection of the Centro de Pesquisa de Pecuária do Sudeste (CPPSE/EMBRAPA) originating from different regions in Brazil. All accessions belonged to the Plicatula group, 13 of them being P. plicatulum, three P. guenoarum, two P. yaguaronense, two P. compressifolium, one P. atratum, and 31 still unidentified Paspalum sp. Except for a P. yaguaronense accession that presented 2n=60, all the remaining ones presented 2n=40 chromosomes. This is the first report of the chromosome number of P. atratum. Considering that the basic number for most species in the genus Paspalum is ×=10, the accessions analyzed are tetraploids (2n=4×=40) and hexaploids (2n=6×=60).
Similar content being viewed by others
References
Batista, L.A.R., R.E. Godoy & J.M. Pereira, 1994. Avaliação do potencial forrageiro de espécies do gênero Paspalum. Ensaio 1992/93. In: XXXI Reunião Anual da Sociedade Brasileira de Zootecnia, Anais, MaringáPR pp 641.
Batista, L.A.R., R.E. Godoy & J.M. Pereira, 1995. Potencial forrageiro de acessos de germoplasma de Paspalum. Ensaio 1993/94. In: XXXII Reunião Anual da Sociedade Brasileira de Zootecnia, Anais, BrasíliaDF, pp 231–233.
Brown, W.V., 1950. Cytological study of some Texas gramineae. Bull Torrey Bot Club 77: 6376.
Burson, B.L., 1975 Cytology of some apomitic Paspalum species. Crop Sci 15: 229–232.
Burson, B.L. & H.W. Bennett, 1971. Chromosome numbers, microsporogenesis and mode of reproduction of seven Paspalum species. Crop Sci 11: 292–294.
Burson, B.L. & C.L. Quarin, 1992. Cytological relationship between Paspalum dilatatum and diploid cytotypes of P. brunneum and P. rufum. Genome 35: 332–336.
Cabrera, A.L. & A. Willink, 1973. Biogeografia de América Latina. OEA. Monografias Científicas, Série Biología 13, Washington, DC pp 75.
Davidse, G. & R.W. Pohl, 1972. Chromosome numbers and notes on some Central American Grasses. Can J Bot 50: 273–283.
Hickenbick, M.C.M., M. Dall'Agnol & G.E. Gomes, 1987. Estudos citogenéticos em espécies do gênero Paspalum (Gramineae). In: Encontro Internacional sobre Melhoramento Genético de Paspalum. Anais, Nova Odessa, Instituto de Zootecnia, pp 57–63.
Killen, T.J., 1990. The grasses of Chiquitanía. Santa Cruz, Bolívia. Ann Missouri Bot Garden 77: 125–201.
Moraes-Fernandes, M.I.B., I.L. Barreto, F.M.G. Salzano & M.C. Freitas-Sacchet, 1974. Cytological and evolutionary relationships in Brazilian forms of Paspalum (Gramineae). Caryologia 27: 455–465.
Norrmann, G.A., C.L. Quarín & B.L. Burson, 1989. Cytogenetics and reproductive behavior of different chromosome races in six Paspalum species. J Hered 80: 24–28.
Nuñez, O., 1952. Las gramineas argentinas de la tribus ‘Paniceae’. Rev Fac Agron 28: 229–255.
Pi, P. & C. Chao, 1974. Microsporogenesis in Paspalum longifolium and P. commersonii on two different polyploid levels. Cytologia 39: 453–465.
Pinheiro Jr, A., M.T. Pozzobon & J.F.M. Valls, 1989. Caracterização citogenética de acessos de germoplasma de Paspalum yaguaronense (grupo Plicatula). In: 26a Reunião Anual da Sociedade Brasileira de Zootecnia, Anais, Porto Alegre, pp 2.
Pitman, M.W., B.L. Burson & E.C. Bashaw, 1987. Phylogenetic relationship among Paspalum species with different base chromosome numbers. Bot Gaz 148: 130–135.
Pozzobon, M.T. & J.F.M. Valls, 1987. Caracterização citogenética em acessos de germoplasma de espécies brasileiras de Paspalum (Gramineae). In: Encontro Internacional sobre Melhoramento de Paspalum, Anais, Nova Odessa, Instituto de Zootecnia, pp 73–78.
Pritchard, A.J., 1962. The cytology and reproduction of Paspalum yaguaronense (Henr) Aust J Agric Res 13: 206–211.
Pritchard, A.J., 1970. Meiosis and embryo sac development in Urochloa mosambicensis and three Paspalum species. Aust J Agric Res 21: 649–652.
Pritchard, A.J. & K.F. Gould, 1964. Chromosome numbers in some introduced and indigenous legumes and grasses, CSIRO (Australia) Div Trop Pastures Tech Paper No 2 pp 18.
Quarín, C.L., 1986. Seasonal changes in the incidence of apomixis of diploid, triploid and tetraploid plants of Paspalum cromyorrhizon. Euphytica 35: 515–522.
Quarin, C. & W.W. Hanna, 1980. Chromosome behavior, embryo sac development, and fertility of Paspalum modestum, P. bosianum, and P. conspersum. J Hered 71: 419–422.
Quarin, C.L. & E.P. Lombardo, 1986. Niveles de ploidia y distribuci ón geográfica de Paspalum quadrifarium (Gramineae) Mendeliana 7: 101–107.
Reeder, J.R., 1967. Notes on Mexican grasses VI. Miscellaneous chromosome numbers. Bull Torrey Bot Club 94: 1–17.
Saura, R., 1941. Cariologia de algumas espécies del género Paspalum. Rev Fac Agron Veterin 2: 41–48.
Valls, J.F.M., 1987. Recursos genéticos de espécies de Paspalum no Brasil. In: Encontro Internacional sobre Melhoramento de Paspalum, Anais, Nova Odessa, Instituto de Zootecnia, pp 3–13.
Valls, J.F.M., 1992. Origem do germoplasma dePaspalum disponível no Brasil para a área tropical. In: Red Internacional de Evaluaci ´on de Pastos Tropicales/RIEPT, 1a Reuni´on Sabanas, Brasília, EMBRAPA/CPAC/CIAT, pp 68–80.
Vasconcellos, A.M., M.T. Pozzobon & J.F.M. Valls, 1989. Caracterização citogenética de acessos de germoplasma de Paspalum compressifolium (grupo Plicatula). In: 26a Reunião Anual da Sociedade Brasileira de Zootecnia, Anais, Porto Alegre, p 1.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Takayama, S., Freitas, P., Pagliarini, M. et al. Chromosome number in germplasm accessions of Paspalum (Plicatula group) from different regions in Brazil. Euphytica 99, 89–94 (1998). https://doi.org/10.1023/A:1018336200053
Issue Date:
DOI: https://doi.org/10.1023/A:1018336200053