Recombination Indices In Species Of Erythrina L. (leguminosae, Papilionoideae)

Darlington's recombination indices were calculated for eight species of Erythrina by adding the mean chiasma frequency and the haploid chromosome number of each species. The recombination indices distinguished subgenus Erythraster (two species with greater mean chiasma frequency) from subgenera Micropteryx and Erythrina. This discrimination corroborates literature data on pollen morphology. It was not possible to separate groups at sectional level using recombination index. The recombination indices were also compared with data on breeding system and pollinators, available in literature, to investigate Grant's hypothesis on the occurrence of compensatory mechanisms in the regulation of recombination in plants. The data on breeding systems in Erythrina are very incomplete and it was not possible to correlate values of recombination indices with autogamy or allogamy. Species visited by hummingbirds showed lower recombination indices than species visited by other kind of pollinators.1222163170Arroyo, M.K.T., Breeding systems and pollination biology in Leguminosae (1981) Advances in Legume Systematics, pp. 723-769. , Polhill RM, Raven RM, eds Kew: Royal Botanic GardensBruneau, A., Doyle, J.J., Cladistic analysis of chloroplast DNA restriction site characters in Erythrina (Leguminosae. Phaseoleae) (1993) Systematic Botany, 18, pp. 229-247Burkart, A., (1952) Las Leguminosas Argentinas Silvestres y Cultivadas, , Buenos Aires: ACME AgencyBurt, A., Bell, G., Chiasmata. Mammalian chiasma frequencies as a test of two theories of recombination (1987) Nature, 326, pp. 803-805Cruz, N.D., Ungaro, M.R.G., Medina, D.M., Observações citológicas em três espécies de Erythrina (1976) Bragantia, 35, pp. 133-139Darlington, C.D., (1958) The Evolution of Genetic Systems, , New York: Inc. PublishersFaegri, K., Van Der Pijl, L., (1971) The Principles of Pollination Ecology, , New York Pergamon PressFeinsinger, P., Kinhart, Y.B., Swarm, L.A., Wolfe, J.A., Aspects of pollination biology of three Erythrina species on Trinidad and Tobago (1979) Annals of the Missouri Botanical Garden, 66, pp. 451-471Fryxell, P.A., Mode of reproduction in higher plants (1957) Botanical Review, 25, pp. 135-233Gibbs, P.E., Milne, C., Vargas-Carillo, M., Correlation between the breeding system and recombination indexes in five species of Senecio (1975) New Phytologist, 75, pp. 619-626Gomes, F.P., (1978) Curso de Estatistica Experimental, , São Paulo: NobelGraham, A., Tomb, A.S., Palynology of Erythrina (Leguminosae:Papilionoideae). the subgenera, sections, and generic relationships (1977) Lloydia, 40, pp. 413-435Grant, V., The regulation of recombination in plants (1958) Cold Spring Harbor Symposia of Quantitative Biology, 23, pp. 337-363Grant, V., (1975) Genetics of Flowering Plants, , New York: Columbia University PressHemsley, A.J., Ferguson, I.K., Pollen morphology of the genus Erythrina (Leguminosae: Papilionoideae) in relation to floral structure and pollinators (1985) Annals of the Missouri Botanical Garden, 72, pp. 570-590Hernandez, A.J., Toledo, V.M., The role of nectar robbers and pollinators in the reproduction of Eythrina leptorhiza (1979) Annals of the Missouri Botanical Garden, 66, pp. 512-520Jalil, R., Pal, M., Srivastava, G.S., Khoshoo, T.N., Cytogenetics of Erythrina x resuparcelli Srivastava (1982) Allertonia, 3, pp. 19-24Jones, G.H., Chiasmata (1987) Meiosis, pp. 213-244. , Moens PB. Orlando:Academk PressKoella, J.C., Ecological correlates of chiasma frequency and recombination index of plants (1993) Biological Journal of the Linnean Society, 48, pp. 227-238Krukoff, B.A., Supplementary notes on the American species of Erythrina (1941) American Journal of Botany., 28, pp. 683-691Krukoff, B.A., Barneby, R.C., A conspectus of the genus Erythrina (1974) Lloydia, 37, pp. 332-459Lawrence, M.E., Senecio L. (Asteraceae) in Australia: Recombination systems of a polyploid series (1985) Australian Journal of Botany, 33, pp. 209-219Medina, D.M., Conagin, C.H.T.M., (1964) Técnica Citológica, , Campinas: Instituto Agronômico, publicação 2610Neill, D.A., Trapliners in trees: Hummingbird pollination of Erythrina Sect. Erythrina (Leguminosae Papilionoideae) (1987) Annals of the Missouri Botanical Garden, 74, pp. 27-41Neill, D.A., Experimental studies on species relationships in Erythrina (Leguminosae Papilionoideae) (1988) Annals of the Missouri Botanical Garden, 75, pp. 886-969Raven, P.H., Erythrina Symposium II. Erythrina (Fabaceae: Faboideae): Introduction to Symposium II (1977) Lloydia, 40, pp. 401-406Raven, P.H., Erythrina symposium III. Erythrina (Fabaceae: Faboideae): Introduction to Symposium III (1979) Annals of the Missouri Botanical Garden, 66, pp. 417-421Roy, R.P., Singh, M.K., Meiotic studies in the genus Lathyrus L (1968) The Nucleus, 11, pp. 7-12Sokal, R.R., Rohlf, F.J., (1969) Biometry, , San Francisco: WH Freeman CompanySybenga, J., (1972) General Cytogenetics, , Amsterdam: North-Holland Publishing Compan