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Recovery of ryegrass species from drought

Published online by Cambridge University Press:  27 March 2009

I. B. Norris  and
H. Thomas
I. B. Norris
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
H. Thomas
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
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Summary

The effect of drought on the growth and subsequent recovery of container-grown perennial, Italian and hybrid ryegrass plants was assessed in a glasshouse. Dry-matter production and percentage of water-soluble carbohydrates were measured, and nondestructive measurements of growth components (leaf extension, leaf appearance and tillering) were made.

Drought had an effect upon all the variables recorded. Italian ryegrass was most severely affected by drought in terms of tillering, leaf extension and subsequent recovery. Selecting for improved recovery growth was considered to be of more economic importance than selecting for improved growth during drought.

It was concluded that subjecting pot-grown plants to drought, although in many ways unrealistic, was a very useful technique when screening a large number of different genotypes for drought tolerance and recovery.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 98 , Issue 3 , June 1982 , pp. 623 - 628
Copyright
Copyright © Cambridge University Press 1982

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