Data/hora: 09/06/2024 05:55:12

Provedor de dados: | Scientia Agricola
País: | Brazil
Título: | Archaeological material for the study of crop evolution
Autores: | Freitas,Fábio de Oliveira; Martins,Paulo Sodero.
Data: | 2003-01-01
Ano: | 2003
Palavras-chave: | Zea mays; Manihot esculenta; Archaeology; Indigenous; Starch.
Resumo: | This research studies archaeological samples of maize (Zea mays mays) and cassava (Manihot esculenta), from Januaria, MG, Brazil, for samples between 1010 (for the oldest sample) and 570 years (for the most recent) as estimated through radiocarbon dating. Maize cobs were morphologically analysed by using length, basal and apical diameters, largest diameter, number of rows, number of grains per row, and number of grains per row per length parameters. The maize cob length presented increases through time, allowing an increase on the number of seed per cob, but the size of seeds did not vary significantly. Starch present in the reserve organs of the maize and cassava were analysed morphologically through Scanning Electron Microscopy, and compared to indigenous and modern samples, aiming to estimate the diversity of the material and, for the cassava, to assure that samples were truely Manihot sp. The starch of the maize and cassava reserve organs was in excellent state of conservation and the morphology of the starch grains allowed the separation of maize varieties. More than one variety of maize was found on a same period of time, suggesting that the old indigenous people of the area planted different varieties of maize simultaneously and these varieties changed through the studied period of time. Finally archaeological starch grains of maize presented more diverse standards than modern grains.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200027
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162003000200027
Formato: | text/html
Fonte: | Scientia Agricola  v.60 n.2 2003
Fonte: | info:eu-repo/semantics/openAccess