نتایج جستجو برای: indigenous crops

تعداد نتایج: 71728  

Journal: :journal of agricultural science and technology 2012
k. a. sultan f. ziadat

sustainable management of limited land and water resources is urgently needed to meet the increasing demand for food and to protect the environment. land suitability analysis is a prerequisite in assessing and proposing sustainable land use alternatives for an area. soil data are usually available at different levels of detail and stored in various forms, usually soil maps and/or soil observati...

2015
Zerihun Tadele

Food security is the main concern in Africa as the production and productivity of crops are under continuous threat. Indigenous crops also known as orphanor as underutilizedcrops provide key contributions to food security under the present scenario of increasing world population and changing climate. Hence, these crops which belong to the major categories of cereals, legumes, fruits and root cr...

Journal: :Molecular ecology 2005
T T Armstrong R G Fitzjohn L E Newstrom A D Wilton W G Lee

To date, regional surveys assessing the risk of transgene escape from GM crops have focused on records of spontaneous hybridization to infer the likelihood of crop transgene escape. However, reliable observations of spontaneous hybridization are lacking for most floras, particularly outside Europe. Here, we argue that evidence of interspecific reproductive compatibility derived from experimenta...

2004
Rosamond L. Naylor Walter P. Falcon Robert M. Goodman Molly M. Jahn Theresa Sengooba Hailu Tefera Rebecca J. Nelson

This article examines the opportunities for using several forms of modern biotechnology to improve orphan crops in developing countries. These crops, including tef, millets, cowpea, and indigenous vegetables, fruits, roots, and tubers, tend to be locally important, but receive little public or private investment. Recent advances in the fields of genetics and genomics provide a more unified unde...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2010
Flora Lu Clark Gray Richard E Bilsborrow Carlos F Mena Christine M Erlien Jason Bremner Alisson Barbieri Stephen J Walsh

To examine differences in land use and environmental impacts between colonist and indigenous populations in the northern Ecuadorian Amazon, we combined data from household surveys and remotely sensed imagery that was collected from 778 colonist households in 64 colonization sectors, and 499 households from five indigenous groups in 36 communities. Overall, measures of deforestation and forest f...

2006
Joachim Zietz Alan Seals

Concern over the loss of genetic diversity in the world’s field crops has increased due to the commercial introduction of genetically modified crops. Mexico is particularly sensitive to this issue, as it is the center of genetic diversity for maize and home to a large number of indigenous farmers who propagate this diversity. This paper analyzes to what extent the biodiversity of maize may be e...

2017
Julian Burger Mary Kapron

This paper identifies the principal concerns of indigenous peoples with regard to current international treaties on certain psychoactive substances and policies to control and eradicate their production, trafficking, and sale. Indigenous peoples have a specific interest in the issue since their traditional lands have become integrated over time into the large-scale production of coca, opium pop...

Journal: :Journal of nematology 1988
J Bridge

The Pacific islands have a diverse range of food and cash crops with indigenous and introduced nematode problems. The staple food crops have serious nematode pests, such as Meloidogyne spp. on sweet potato, Hirschmanniella miticausa causing corm rot of taro, and Pratylenchus coffeae and Radopholus sp. producing tuber dry rot of yams. Bananas are infested with P. coffeae or R. similis, citrus wi...

2004
Rosamond L. Naylor Walter P. Falcon Robert M. Goodman Molly M. Jahn Theresa Sengooba Hailu Tefera Rebecca J. Nelson

This article examines the opportunities for using several forms of modern biotechnology to improve orphan crops in developing countries. These crops, including tef, millets, cowpea, and indigenous vegetables, fruits, roots, and tubers, tend to be locally important, but receive little public or private investment. Recent advances in the fields of genetics and genomics provide a more unified unde...

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