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An analysis of seed development in Pisum sativum. XV. The influence of seed size on protein content

Published online by Cambridge University Press:  19 September 2008

A. E. Arthur ,
H. Adams ,
K. Strouts ,
D. A. Jones ,
T. L. Wang  and
C. L. Hedley
A. E. Arthur*
Affiliation:
John Innes Centre for Plant Science Research, Colney Lane, Norwich NR4 7UH, UK
H. Adams
Affiliation:
John Innes Centre for Plant Science Research, Colney Lane, Norwich NR4 7UH, UK
K. Strouts
Affiliation:
John Innes Centre for Plant Science Research, Colney Lane, Norwich NR4 7UH, UK
D. A. Jones
Affiliation:
John Innes Centre for Plant Science Research, Colney Lane, Norwich NR4 7UH, UK
T. L. Wang
Affiliation:
John Innes Centre for Plant Science Research, Colney Lane, Norwich NR4 7UH, UK
C. L. Hedley
Affiliation:
John Innes Centre for Plant Science Research, Colney Lane, Norwich NR4 7UH, UK
*
* Correspondence
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Abstract

The variation for protein content has been assessed in a series of pea (Pisum sativum L.) lines differing in mean seed size. The range of seed size within each genotype was manipulated by growing the plants in different environments and by altering the structure of the plant. The response of the lines in terms of seed weight to the environments and treatments was inconsistent, but 90% of the total variation was accounted for by differences between genotypes. In contrast, for percentage protein, the genetic component was much weaker with nearly half the variation being accounted for by within (residual) variation. The correlations between seed weight and percentage protein were highly genotype specific. For the largerseeded genotype, percentage protein increased with increasing seed size (r= +0.9, P < 0.01), while for the small-seeded genotype there was mid-range negative value (r = −0.5, P <0.01). It is suggested that any assessment of percentage protein in pea genotypes must take account of seed size.

Keywords

genotype–environment interactionpeaPisum sativum L.protein contentseed size
Type
Research Papers
Information
Seed Science Research , Volume 1 , Issue 4 , December 1991 , pp. 203 - 208
Copyright
Copyright © Cambridge University Press 1991

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