Genetic Characterization of Cassava (<i>Manihot esculenta </i>Crantz) and Yam (<i>Dioscorea trifida </i>L.) Landraces in Swidden Agriculture Systems in Brazil

Veasey, Elizabeth Ann; Bressan, Eduardo A.; Siqueira, Marcos Vinícius Bohrer Monteiro; Borges, Aline; Queiroz-Silva, Jurema R.; Pereira, Kayo Julio Cesar; Recchia, Gustavo Henrique; Ming, Lin Chau

doi:10.1017/cbo9781139019514.020

Cited by 5 publications

(1 citation statement)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This study also showed that there is a clear regionalization in the assignment of popular names for D. alata local varieties, according to their morphology, uses or origin. The role of farmers in maintaining the local agro-biodiversity, whether in home gardens or fields, is important for the maintenance of the genetic diversity of yams and other crops over generations (Chair et al, 2010;Siqueira et al, 2010;Bressan et al, 2011;Veasey et al, 2012). However, for these varieties to be maintained at an on farm conservation basis, agroecological conservation policy goals must be considered, as well as more studies emphasising the importance of yams in rural areas.…”

Section: Origin Of Dioscorea Alata Local Varieties and Their Usesmentioning

confidence: 99%

Distribution, management and diversity of yam local varieties in Brazil: a study on Dioscorea alataL.

et al. 2014

View full text Add to dashboard Cite

Widely spread in the tropics, yams were introduced into Brazil during the colonial period and are currently grown throughout the country. Despite its importance as a pharmacological and food source, there is a lack of studies describing how and where this tuber is grown in Brazil. The aim of this study was to provide an overview of the cultivation and distribution of Dioscorea alata in different Brazilian regions. A total of 63 farmers were visited in different municipalities and communities in four regions in the country: South, Southeast, Northeast and Midwest. Semi-structured interviews were conducted to collect socio-economic, use, management and diversity data for this crop. The majority of interviewers were men, married, with children, using retirement benefits and agriculture as income and family labour as the main support in the yam cultivation. A wide distribution of this species was found, with the occurrence of D. alata in the four sampled regions. A variety of vernacular names for this species was collected, differing according to the region where it is cultivated. Most farmers cultivate yams in fields, however an increased usage of home gardens for the cultivation of this tuber was found. Also, most farmers cultivate yams in association with other crops in areas of different sizes and slash and burn practices, although mostly disappearing, are still being used by many farmers. The results of this study provide more concrete data on the distribution and diversity of this important crop.Keywords: agroecological diversity, Dioscorea, ethnobotany, in situ conservation, tubers. Distribuição, manejo e diversidade de variedades locais de inhame no Brasil:um estudo em Dioscorea alata L. ResumoAmplamente difundido nos trópicos, o inhame entrou no Brasil na época da colonização e atualmente é cultivado em todo o país. Apesar de sua importância como cultura alimentícia e farmacológica, são raros os estudos que identifiquem como e onde esse tubérculo está sendo cultivado no Brasil. Este estudo teve como objetivo apresentar um panorama do cultivo e distribuição da espécie Dioscorea alata L. em diversas regiões do Brasil. Para tanto, foram visitados 63 agricultores em diferentes municípios, distribuídos entre o Sul, Sudeste, Nordeste e Centro-Oeste do país. Foram realizadas entrevistas semi-estruturadas, nas quais foram levantados dados socioeconômicos, bem como sobre o uso, manejo e diversidade dessa espécie. A maioria dos entrevistados eram homens casados, com filhos, que possuíam aposentadoria e a agricultura como principais fontes de renda. Constatou-se que a mão-de-obra familiar está bastante envolvida com o cultivo de inhame. Uma ampla distribuição da espécie foi observada, com a ocorrência de D. alata nas quatro regiões amostradas. Grande diversidade de nomes populares foi observada para a espécie neste estudo, com diferenças na nomenclatura popular em função das diferentes regiões onde a mesma é cultivada. A maioria dos agricultores cultiva inhame em roças, no entanto a importância dos quintais fo...

show abstract

Section: Origin Of Dioscorea Alata Local Varieties and Their Usesmentioning

confidence: 99%