Hammond, John P., Broadley, Martin R., White, Philip J., King, Graham J., Bowen, Helen C., Hayden, Rory M., Meacham, Mark C., Mead, A. (Andrew), Overs, Tracey, Spracklen, William P. and Greenwood, Duncan J. (2009) Shoot yield drives phosphorus use efficiency in Brassica oleracea and correlates with root architecture traits. In: Conference on Resource Capture by Crops - Integrated Approaches, Univ Nottingham, Nottingham, England, September 10-11, 2008. Published in: Journal of Experimental Botany, Vol.60 (No.7). pp. 1953-1968.

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Abstract

The environmental and financial costs of using inorganic phosphate fertilizers to maintain crop yield and quality are high. Breeding crops that acquire and use phosphorus (P) more efficiently could reduce these costs. The variation in shoot P concentration (shoot-P) and various measures of P use efficiency (PUE) were quantified among 355 Brassica oleracea L. accessions, 74 current commercial cultivars, and 90 doubled haploid (DH) mapping lines from a reference genetic mapping population. Accessions were grown at two or more external P concentrations in glasshouse experiments; commercial and DH accessions were also grown in replicated field experiments. Within the substantial species-wide diversity observed for shoot-P and various measures of PUE in B. oleracea, current commercial cultivars have greater PUE than would be expected by chance. This may be a consequence of breeding for increased yield, which is a significant component of most measures of PUE, or early establishment. Root development and architecture correlate with PUE; in particular, lateral root number, length, and growth rate. Significant quantitative trait loci associated with shoot-P and PUE occur on chromosomes C3 and C7. These data provide information to initiate breeding programmes to improve PUE in B. oleracea.

Item Type:	Conference Item (Paper)
Subjects:	S Agriculture > SB Plant culture
Divisions:	Faculty of Science > Life Sciences (2010- ) > Warwick HRI (2004-2010)
Journal or Publication Title:	Journal of Experimental Botany
Publisher:	Oxford University Press
ISSN:	0022-0957
Date:	May 2009
Volume:	Vol.60
Number:	No.7
Number of Pages:	16
Page Range:	pp. 1953-1968
Identification Number:	10.1093/jxb/erp083
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Department of Environment, Food and Rural Affairs (DEFRA), The Scottish Government Rural and Environment Research and Analysis Directorate
Conference Paper Type:	Paper
Title of Event:	Conference on Resource Capture by Crops - Integrated Approaches
Type of Event:	Conference
Location of Event:	Univ Nottingham, Nottingham, England
Date(s) of Event:	September 10-11, 2008
URI:	http://wrap.warwick.ac.uk/id/eprint/27933

Data sourced from Thomson Reuters' Web of Knowledge

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