Novas observações sôbre o dimorfismo dos ramos em Coffea arabica L.
Data
1952-01
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Instituto Agronômico (IAC)
Resumo
Numerosos exemplos de enxertia e estaquia têm mostrado que as gemas dos ramos laterais (plagiotrópicos) do café são diferenciadas de modo que, ao se desenvolverem, não possuem a capacidade de dar ramos ponteiros (ortotrópicos). São descritos dois casos independentes em que se formaram ramos ortotrópicos a partir de ramos plagiotrópicos, indicando que a perda de capacidade do ramo plagiotrópico, de produzir gemas de ramos ortotrópicos, não é total. Um outro exemplo é descrito de ramos ortotrópicos que, pelas observações até agora realizadas, parecem ter se transformado em plagiotrópicos.
Vegetative propagation of coffee plant by means of graft or cuttings has frequently shown that the bud which develops into plagiotropic branches is so differentiated that it looses the capacity to produce upright growing branches (orthotrõpic). Two independent cases found by A. J. T. Mendes and J. E. T. Mendes are described in this paper, of a plagiotropic branch from which an oithotropic branch has developed, indicating that in very rare cases the differentation of the plagiotropic branch is not so complete. Another case is also described of an orthotropic branch that up to the present time sems to have changed into a plagiotropic one.
Vegetative propagation of coffee plant by means of graft or cuttings has frequently shown that the bud which develops into plagiotropic branches is so differentiated that it looses the capacity to produce upright growing branches (orthotrõpic). Two independent cases found by A. J. T. Mendes and J. E. T. Mendes are described in this paper, of a plagiotropic branch from which an oithotropic branch has developed, indicating that in very rare cases the differentation of the plagiotropic branch is not so complete. Another case is also described of an orthotropic branch that up to the present time sems to have changed into a plagiotropic one.
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CARVALHO, A.; ANTUNES FILHO, H. Novas observações sôbre o dimorfismo dos ramos em Coffea arabica L. Bragantia, Campinas, v. 12, n. 1-3, p. 81-84, jan./mar. 1952.