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Genética de Coffea: X - Hereditariedade da ocorrência de sépalas desenvolvidas nas flores de Coffea arabica L. Var. goiaba Taschdjian

In" this paper the authors discuss the nature of the calyx in the Ixorex (Rubiacex), calling special attention to this character in Coffea. The calyx of the goiaba variety of Coffea arabica L. differs from the normal type being well developed, foliaceous and persistent, the fruit being similar in appearance to the guava (Psidium guajava L.). It is supposed that the presence of a...

Observações citológicas em citrus: V. poliploidia em relação à densidade e ao tamanho dos estomas em Citrus e outros gêneros das Aurantioideae.

In the present article two aspects dealing with the relations of polyploidy and stcmata characters in Citrus and related genera are dealt with. First the data of Hirano (5) concerning stomata density in numerous forms of the sub-family Aurantioidex are analysed in relation to their chromosomal constitution. It was thought that the- great variability of stomata number per unit...

Taxonomia de Coffea arabica L.: II - Coffea Arabica L. Var. Caturra e sua forma Xanthocarpa

Instituto Agronômico de Campinas 62 : 9-57, fig. 1-122. 1939.         [ Links ] 5.  Mendes A. J. T. Microsporogênese em C. arabica L. Bragantia (no prelo).         [ Links ] 6.  Mendes, J. E. T., C. A ... . Krug e J. Bergamin. Relatório de uma viagem de estudos sôbre a lavoura cafeeira nos Estados do Rio de Janeiro e Espírito Santo. Bol. da Super, dos Serv. do Café do Estado de São Paulo 21 : 19-28. 1946

Híbridos comerciais de milho

In the present bulletin the authors present the details of a 10 year's corn improvement project to produce hybrid varieties, which has been conducted by the Genetics Division of the Instituto Agronômico, Campinas, S. P., Brasil. A general description is given of the basic material which has been used ; the various methods of isolating and selecting pure lines, methods of...

Melhoramento do cafeeiro: IV - Café Mundo Novo

.         [ Links ] 16.  Mendes, J. E. T. Melhoramento de Coffea arabica L. var. bourbon I — Bragantia 1: 3-25. 1941.         [ Links ] 17.  Mendes, J. E. T. e C. A. Krug. O cafeeiro e sua cultura. Boi. téc. Inst