Estudos experimentais sôbre a origem do milho

Brieger, F. G.

doi:10.1590/s0071-12761944000100011

Cited by 5 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Dr. Arthur G. Kevorkian has told me that pod corn is grown for its magical properties in Zamora, Ecuador, and Dr. Fernando Villamil of the Agricultural Experiment Station at Palmira, Colombia, has informed me that pod corn is well-known in several localities in Colombia. Brieger (1945) has described a form of pod corn from Brazil.…”

Section: ] Mangelsdorf Pod Corn and Origin Of Maize 379mentioning

confidence: 99%

See 1 more Smart Citation

The Role of Pod Corn in the Origin and Evolution of Maize

Mangelsdorf¹

1948

Annals of the Missouri Botanical Garden

View full text Add to dashboard Cite

Section: ] Mangelsdorf Pod Corn and Origin Of Maize 379mentioning

confidence: 99%

“…Effect of Tu on Teosinte. Brieger (1944) is of the opinion that the spikes resulting from crossing teosinte and pod corn followed by backcrossing to teosinte provide an experimental reconstruction of wild corn. I do not share that opinion.…”

Section: Pod Corn In Prehistoric Maize â€"mentioning

confidence: 99%

The Role of Pod Corn in the Origin and Evolution of Maize

Mangelsdorf¹

1948

Annals of the Missouri Botanical Garden

View full text Add to dashboard Cite

“…Nos híbridos com teosinte da Guatemala, as flechas tinham, em geral, glumas do tamanho normal, mas glumas grandes e barbas na flecha reapareceram em alguns indivíduos de geração F2. (BRIEGER 1943(BRIEGER , 1945.…”

Section: D) O Efeito Dos Modificadoresunclassified

“…Talvez o ponto mais importante é que nos híbridos tunicata x Euchlaena, novos efeitos do gen Tu foram constatados : uma tendência para aumentar o númeTo de fileiras na espiga e para tornar a rachis quebradiça (BRIEGER, 1943(BRIEGER, , 1945.…”

Section: D) O Efeito Dos Modificadoresunclassified

Considerações sobre o mecanismo da evolução

Brieger

1944

An. Esc. Super. Agric. Luiz de Queiroz

Self Cite

View full text Add to dashboard Cite

Nos últimos vinte anos podia-se notar uma mudança gradual nas discussões sobre o mecanismo da evolução. A razão principal consiste numa alteração dos métodos, pois as observações descritivas e comparativas, foram substituídas pelos experimentos exatos. A velha teoria da adaptação direta como resposta às necessidades, isto é, o Lamarckismo, perdeu com isso continuamente em seu valor, pois não foi possível achar qualquer comprovação experimental. A teoria fundamental de DARWIN, de outro lado, está definitivamente ganhando terre-

show abstract

Estudos sôbre a inflorescência de milho com referência especial aos problemas filogenéticos

Brieger¹

1945

Bragantia

Self Cite

View full text Add to dashboard Cite

1) The present paper deals with variations in the structure of the inflorescences of the Maydeae Americanae, especially of the ear of Zea Mays, which came under observation during our genetical studies during the last 10 years. Care was tauken to include only such structures which were observed frequently and had in general an aspect which could not be described as a pathological abnormality, but rather as a reversion to a phylogenetically primitive type or as a new form. The aberrations may be summarized as follows: a) Individual flowers. Eeversion to the hermaphrodite state of the usually unisexual flowers in Maydeae were described. Such flowers are however already so well known that no details need to be given. b) Many flowered spikelets. The spikelet in all the American Maydeae are normally two flowered. In forms of tunicata, obtained by selection, spikelets were obtained with up to three perfect flowers, all producing well developed kernels (Fig. 4-6), with a maximum of five flowers. The structure of three-flowered spikelets is explained in the diagrams Fig. 2 and 3. Owing to the organization of the flowers, the embryos of the first and third are turned towards the base of the inflorescence and the embryo of the second flower towards its tip. The embryos in two-flowered epike-lets are normally turned to the base (first flower) and to the tip (second flower). (Cutler, 10). Cases were observed of three flowered spikelets with one abortive flower, both the remaining embryos, produced by the first and third flower, turned towards the base of the inflorescence. c) Number of spikelets per alveolus. In maize and in the male parts of the inflorescences of Euchlaena and Tripsacum two spikelets are formed per alveolus, while in the female parts of the latter genera one spikelet is present, though occasionally exceptions are found. Collins (8) explained the appearance of the double spikelet as remainder of a small spikelet branch which has been lost during evolution. The normal structure and that of a spikelet branch is shown schematically in Fig. 3, e-f. In the tassels of several tunicata plants small and regular branches of spikelets appeared in the alveoli, their f

show abstract

Estudos experimentais sôbre a origem do milho

Cited by 5 publications

References 12 publications

The Role of Pod Corn in the Origin and Evolution of Maize

The Role of Pod Corn in the Origin and Evolution of Maize

Considerações sobre o mecanismo da evolução

Estudos sôbre a inflorescência de milho com referência especial aos problemas filogenéticos

Contact Info

Product

Resources

About