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The measurement of leaf colour in grasses

Published online by Cambridge University Press:  27 March 2009

Madeline Hamill  and
M. S. Camlin
Madeline Hamill
Affiliation:
Agricultural Botany Department, The Queen's University of Belfast, Newforge Lane, Belfast, BT9 5PX
M. S. Camlin
Affiliation:
Agricultural Botany Research Division, Department of Agriculture for Northern Ireland, Plant Testing Station, Crossnacreevy, Belfast, BT6 9SH
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Summary

A method of assessing colour of grass leaves was developed to distinguish between cultivars. Leaves from a representative population of 60 plants of each cultivar were measured. To eliminate subjective judgment a colour difference meter was used, giving tristimulus values X, Y and Z (approximating to red, green and blue respectively), from which the colour co-ordinates L, a and b of the Commission Internationale de L'Eclairage system were calculated.

In a pilot study two visually distinguishable perennial ryegrass cultivars were easily separated (P <0·01) using the colour measurements. In a further examination comparing 23 cultivars, 68% of all possible cultivar pairs were separated (P <0·01).

Type
Research Article
Information
The Journal of Agricultural Science , Volume 103 , Issue 2 , October 1984 , pp. 387 - 393
Copyright
Copyright © Cambridge University Press 1984

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References

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