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A survey of the castor oil content, seed weight and seed-coat colour on the United States Department of Agriculture germplasm collection

Published online by Cambridge University Press:  23 July 2010

M. L. Wang ,
J. B. Morris ,
D. L. Pinnow ,
J. Davis ,
P. Raymer  and
G. A. Pederson
M. L. Wang*
Affiliation:
USDA–ARS, PGRCU, 1109 Experiment Street, Griffin, GA 30223, USA
J. B. Morris
Affiliation:
USDA–ARS, PGRCU, 1109 Experiment Street, Griffin, GA 30223, USA
D. L. Pinnow
Affiliation:
USDA–ARS, PGRCU, 1109 Experiment Street, Griffin, GA 30223, USA
J. Davis
Affiliation:
Department of Experimental Statistics, University of Georgia, Griffin, GA 30223, USA
P. Raymer
Affiliation:
Crop and Soil Sciences Department, University of Georgia, Griffin, GA 30223, USA
G. A. Pederson
Affiliation:
USDA–ARS, PGRCU, 1109 Experiment Street, Griffin, GA 30223, USA
*
*Corresponding author. E-mail: [email protected]
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Abstract

Castor (Ricinus communis L.) is an important non-edible oilseed crop that can potentially be used as feedstock for biodiesel production. There are 1033 accessions in the United States Department of Agriculture (USDA) castor germplasm collection. The range of oil content in these accessions has never been surveyed. For exploiting castor as a feedstock for biodiesel production, the entire USDA castor collection was procured from the National Plant Germplasm System (Germplasm Resources Information Network) and the oil content was measured with nuclear magnetic resonance. The variation of oil content among all castor accessions ranged from 37.2 to 60.6% with an average of 48.2%. One hundred seed weights were determined and seed-coat colour was also recorded from each accession. One hundred seed weight ranged from 10.1 to 73.3 g with an average of 28.3 g. There was a significant correlation between seed weight and oil content but the correlation value was low (r = 0.1572, P < 0.0001). Fifty accessions with a wide range of oil content were selected to be field grown for further evaluation. The results obtained from this survey will be useful for castor breeders seeking germplasm accessions with high oil content in the collection.

Keywords

nuclear magnetic resonance methodoil contentRicinus communis germplasmUSDA collection
Type
Short Communication
Information
Plant Genetic Resources , Volume 8 , Issue 3 , December 2010 , pp. 229 - 231
Copyright
Copyright © NIAB 2010

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References

da Siliva Ramos, LC, Tango, JS, Savi, A and Lea, NR (1984) Variability of oil and fatty acid composition in castorbean varieties. Journal of American Oil Chemistry Society 61: 1841–1843.CrossRefGoogle Scholar
Morris, JB (2004) Phytochemical traits in the genetic resources of castorbean. Current Topics in Plant Biology 5: 63–67.Google Scholar
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