Summary
The potentials of the species of Centrosema as pasture and fodder crops in Tropical and Subtropical areas have promoted their germplasm collection and evaluation in Brazil and other countries of Central and South America. The species C. acutifolium, C. pubescens and C. brasilianum are of particular interest. Samples of the same accessions form wild materials collected in Brazil have been agronomically evaluated in Brazil and Colombia, and handled as self-pollinating species. Pairs of samples (one from Brazil and the other from Colombia) of four accessions have been genetically analyzed using isozyme markers at 16 loci. A noticeable genetic differentiation has occurred between members of each pair in few generations. Experimental evidences indicate that frequency of outcrossing are relatively high in these species. It is proposed that outcrossing between non-isolated neighboring accessions and genetic drift in small size plantings are the causes of the genetic differentiation between Brazilian and Colombian samples. Guides to evaluate and multiply Centrosema germplasm are suggested.
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References
Barbosa-Fevereiro, V.P., 1977. Centrosema (A.P. de Candolle) Bentham do Brasil. Leguminosae-Faboideae. Rodriguesia 29: 159–219.
Battistin, A., 1983. Morfologia floral e biologia da reproduçao de cinco especies de Centrosema (DC) Benth. (Leguminosae-Papilionoideae). Ph D. Thesis. Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de Sao Paulo (ESALQ), Piracicaba, Brazil.
Battistin, A. & M.G., Vargas, 1989. A cytogenetic study of seven species of Centrosema (DC) Benth. (Leguminosae-Papilionoideae). Rev. Brasil. Genet. 12: 319–329.
Brown, A.H.D., 1990. Genetic characterization of plant mating system. In: A.H.D.Brown, M.T.Clegg, A.L.Kahler & B.S.Weir (Eds.), Plant Population Genetics, Breeding and Genetic Resources, pp. 145–162, Sinauer, Sunderland, Massachusetts.
Clements, R.J., R.J., Williams, B., Grof & J.B., Hacker, 1983. Centrosema. In: R.L.Burt, P.P.Rotar, J.L.Walker & M.W.Silvey (Eds.). The role of Centrosema, Desmodium and Sthylosanthes in improving pastures, pp. 69–96, Westview Tropical Agriculture Series no 6, Westview Press, Boulder, Colorado.
Hutton, E.M., 1960. Flowering and pollination in Indigofera spicata, Phaseolus lathyroides, Desmodium uncinatum and some other tropical pasture legumes. Emp. J. Exp. Agric. 28: 235–243.
Maass, B.L. & A.M., Torres, 1992. Outcrossing in the tropical forage legume Centrosema brasilianum (L.) Benth. Proc. XIIIth Eucarpia Congress, pp. 465–466, Angers, France.
Miles, J.W., R.J., Clements, B., Grof & A., Serpa, 1990. Genetics and breeding of Centrosema. In: R. Schultze-Kraft & R.J. Clements (Eds.), Centrosema: Biology, Agronomy and Utilization, pp. 245–270, CIAT publication no 92, Cali, Colombia.
Nei, M., 1987. Molecular Evolutionary Genetics. Columbia Univ. Press, New York.
Novaes, I.M. & M.I. de O., Penteado, 1993. Chromosomic observations in Centrosema. Rev. Brasil Genet. 16: 441–447.
Penteado, M.I. de O., 1986. Introduçao, availiaçao e melhoramento do genero Centrosema. Situaçao atual e perspectivas. In: Simposio Sobre Produçao Animal 3, pp. 45–52, Fundaçao Cargill, Campo Grande, Campinas, Brasil.
Penteado, M.I. de O., 1994. Estudio de la estructura genética poblacional de tres especies del género Centrosema (Leguminosae-Papilionoideae). Ph D. Thesis, Universidad de León, León, Spain.
Penteado, M.I. de O., R.G. de O., Alves & M.T., Sousa, 1990. Estudos sobre a variabilidade intrapopulacional em Centrosema spp. In: Proc. 27 Reuniao Anual da Sociedade Brasileira de Zootecnia, p. 288, Campinas, Brasil.
Shultze-Kraft, R. & J., Belalcazar, 1988. Germplasm collection and preliminary evaluation of the pasture legume Centrosema brasilianum (L.). Benth. Trop. Agric. 65: 137–144.
Schultz-KraftR. & R.J.Clements (Eds.), 1990. Centrosema: Biology, Agronomy and Utilization. Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia.
Shaw, D.V., A.L., Kahler & R.W., Allard, 1981. A multilocus estimator of mating system parameters in plant populations. Proc. Natl. Acad. Sci. USA. 78: 1298–1302.
Thomas, D. & R., Schultze-Kraft, 1990. Evaluation of five shrubby legumes in comparison with Centrosema acutifolium, Carimagua, Colombia. Tropical Grasslands 24: 87–92.
Vallejos, C.E., 1983. Enzyme activity staining. In: S.D.Tanksley & T.J.Orton (Eds.), Isozymes in Plant Genetics and Breeding Part A, pp. 469–516, Elsevier, Amsterdam.
Vaquero, F., F.J., Vences, P., García, L., Ramírez & M. Pérez, de laVega, 1989. Mating system in rye: variability in relation to the population and plant density. Heredity 62: 17–26.
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de Penteado, M.I.O., de Miera, L.E.S. & de la Vega, M.P. Genetic resources of Centrosema spp.: genetic changes associated to the handling of an active collection. Genet Resour Crop Evol 43, 85–90 (1996). https://doi.org/10.1007/BF00126945
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DOI: https://doi.org/10.1007/BF00126945