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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Distribution, management and diversity of the endangered Amerindian yam (Dioscorea trifida L.)

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Author(s):
Nascimento, W. F. [1] ; Siqueira, M. V. B. M. [2] ; Ferreira, A. B. [3] ; Ming, L. C. [3] ; Peroni, N. [4] ; Veasey, E. A. [5]
Total Authors: 6
Affiliation:
[1] Univ Fed Maranhao UFMA, Ctr Ciencias Agr & Ambientais, BR-65500000 Chapadinha, MA - Brazil
[2] Univ Sagrado Coracao, Cent Lab Pesquisa Ciencia & Tecnol Ambiental, BR-17011160 Bauru, SP - Brazil
[3] Univ Estadual Paulista, UNESP, Fac Ciencias Agron Botucatu, BR-18610307 Botucatu, SP - Brazil
[4] Univ Fed Santa Catarina, Dept Ecol & Zool, BR-88037000 Florianopolis, SC - Brazil
[5] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Genet, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Brazilian Journal of Biology; v. 75, n. 1, p. 104-113, MAR 2015.
Web of Science Citations: 5
Abstract

The objective of this study was to verify the occurrence of Dioscorea trifida in Brazil and to obtain information concerning its distribution, management and diversity. Farmers from 21 communities were interviewed in the states of São Paulo, Santa Catarina and Mato Grosso. During the visits, semi-structured interviews were conducted to collect socio-economic, management and diversity data for this crop. Fifty-one collected accessions, plus two accessions obtained at local markets of Amazonas, were characterized using 12 morphological traits. Most the interviewed farmers were men (75%) with a mean age of 59.5 years. Just a few young people and labor force were available for agricultural activities, with an average of only three individuals per farm. Most farmers (56%) grew only one variety of D. trifida, although 44% had more than one variety in their fields, which aims to provide greater assurance at harvest. Many popular names were observed for D. trifida, and cará roxo (purple yam) was the name most used by farmers (43.4%). Characters referring to the tuber, such as skin and flesh color, were most relevant for the distinction of the accessions. The results of this study may collaborate to develop strategies for conservation, both ex situ and in situ, within the view of on farm conservation. (AU)

FAPESP's process: 07/04805-2 - Genetic diversity in yam (Dioscorea spp.) accessions originated from traditional agriculture swiddens and commercial varieties assessed with microssatelite markers
Grantee:Elizabeth Ann Veasey
Support type: Regular Research Grants