Document Detail


Evolutionary dynamics of cycle length in pearl millet: the role of farmer's practices and gene flow.
MedLine Citation:
PMID:  22327603     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In the Sahel of Africa, farmers often modify their cultivation practices to adapt to environmental changes. How these changes shape the agro-biodiversity is a question of primary interest for the conservation of plant genetic resources. We addressed this question in a case study on pearl millet in south western Niger where farmers used to cultivate landraces with different cycle length in order to cope with rain uncertainty. Early and late landraces were previously grown on distant fields. Nowadays, mostly because of human population pressure and soil impoverishment, it happens that the two types of landraces are grown on adjacent fields, opening the question whether gene flow between them may occur. This question was tackled through a comparative study among contrasting situations pertaining to the spatial distribution of early and late landraces. Observations of flowering periods showed that pollen flow between the two landraces is possible and has a preferential direction from early to late populations.
Authors:
Ghayas Lakis; Athman Maï Ousmane; Douka Sanoussi; Abdoulaye Habibou; Mahamane Badamassi; Françoise Lamy; Naino Jika; Ramatou Sidikou; Toudou Adam; Aboubakry Sarr; Anne Luxereau; Thierry Robert
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-12
Journal Detail:
Title:  Genetica     Volume:  -     ISSN:  1573-6857     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370740     Medline TA:  Genetica     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Laboratoire Systématique et Evolution, UMR 8079, Université Paris-Sud, 91405, Orsay cedex, France, ghayas.lakis@u-psud.fr.
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