Record Details

Past and present dynamics of sorghum and pearl millet diversity in Mount Kenya region

MELSpace

View Archive Info
 
 
Field Value
 
Title Past and present dynamics of sorghum and pearl millet diversity in Mount Kenya region
 
Creator Labeyrie, Vanesse
 
Contributor Deu, Monique
Dussert, Yann
Rono, Bernard
Lamy, Françoise
Marangu, Charles
Kiambi, Dan
Calatayud, Caroline
Coppens d’Eeckenbrugge, Geo
Robert, Thierry
Leclerc, Christian
 
Subject farmers’ seed systems
social organization
crop diversity
 
Description Crop populations in smallholder farming systems are shaped by the interaction of biological,
ecological, and social processes, occurring on different spatiotemporal scales.
Understanding these dynamics is fundamental for the conservation of crop genetic
resources. In this study, we investigated the processes involved in sorghum and pearl
millet diversity dynamics on Mount Kenya. Surveys were conducted in ten sites distributed
along two elevation transects and occupied by six ethnolinguistic groups.
Varieties of both species grown in each site were inventoried and characterized using
SSR markers. Genetic diversity was analyzed using both individual-and
population-based
approaches. Surveys of seed lot sources allowed characterizing seed-mediated
gene flow. Past sorghum diffusion dynamics were explored by comparing Mount
Kenya sorghum diversity with that of the African continent. The absence of structure
in pearl millet genetic diversity indicated common ancestry and/or important pollen-and
seed-mediated
gene flow. On the contrary, sorghum varietal and genetic diversity
showed geographic patterns, pointing to different ancestry of varieties, limited pollen-mediated
gene flow, and geographic patterns in seed-mediated
gene flow. Social and
ecological processes involved in shaping seed-mediated
gene flow are further
discussed.
 
Date 2017-03-22T02:25:41Z
2017-03-22T02:25:41Z
 
Type Journal Article
 
Identifier http://oar.icrisat.org/id/eprint/9836
https://mel.cgiar.org/reporting/download/hash/FxnZw9qG
Vanesse Labeyrie, Monique Deu, Yann Dussert, Bernard Rono, Françoise Lamy, Charles Marangu, Dan Kiambi, Caroline Calatayud, Geo Coppens d’Eeckenbrugge, Thierry Robert, Christian Leclerc. (31/12/2016). Past and present dynamics of sorghum and pearl millet diversity in Mount Kenya region. Evolutionary Applications, 9 (10), pp. 1241-1257.
https://hdl.handle.net/20.500.11766/6532
Open access
 
Language en
 
Rights CC-BY-NC-4.0
 
Format PDF
 
Publisher Wiley
 
Source Evolutionary Applications;9,(2016) Pagination 1241-1257