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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Response-based selection of barley cultivars and legume species for complementarity: Root morphology and exudation in relation to nutrient source
Plant Science, Volume 255, Year 2017
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Description
Phosphorus (P) and nitrogen (N) use efficiency may be improved through increased biodiversity in agroecosystems. Phenotypic variation in plants’ response to nutrient deficiency may influence positive complementarity in intercropping systems. A multicomponent screening approach was used to assess the influence of P supply and N source on the phenotypic plasticity of nutrient foraging traits in barley (H. vulgare L.) and legume species. Root morphology and exudation were determined in six plant nutrient treatments. A clear divergence in the response of barley and legumes to the nutrient treatments was observed. Root morphology varied most among legumes, whereas exudate citrate and phytase activity were most variable in barley. Changes in root morphology were minimized in plants provided with ammonium in comparison to nitrate but increased under P deficiency. Exudate phytase activity and pH varied with legume species, whereas citrate efflux, specific root length, and root diameter lengths were more variable among barley cultivars. Three legume species and four barley cultivars were identified as the most responsive to P deficiency and the most contrasting of the cultivars and species tested. Phenotypic response to nutrient availability may be a promising approach for the selection of plant combinations for minimal input cropping systems. © 2016 Elsevier Ireland Ltd
Authors & Co-Authors
Adu, Michael Osei
United Kingdom, Aberdeen
The James Hutton Institute
Wendler, Renate
United Kingdom, Aberdeen
The James Hutton Institute
Shand, Charles A.
United Kingdom, Aberdeen
The James Hutton Institute
Blackburn, Daniel Menezes
United Kingdom, Lancaster
Lancaster University
Darch, Tegan
United Kingdom, Harpenden
Rothamsted Research
Stutter, Marc
United Kingdom, Aberdeen
The James Hutton Institute
Zhang, Hao
United Kingdom, Lancaster
Lancaster University
Blackwell, Martin Stephen Alan
United Kingdom, Harpenden
Rothamsted Research
Haygarth, Philip M.
United Kingdom, Lancaster
Lancaster University
George, Timothy S.
United Kingdom, Aberdeen
The James Hutton Institute
Statistics
Citations: 34
Authors: 10
Affiliations: 5
Identifiers
Doi:
10.1016/j.plantsci.2016.11.002
ISSN:
01689452