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Drought resistance of hard wheat cultivars measured by a rapid chlorophyll fluorescence test

Published online by Cambridge University Press:  27 March 2009

M. Havaux  and
R. Lannoye
M. Havaux
Affiliation:
Laboratoire de Physiologie Végéale Université Libre de Bruxelles28 avenue Paul Heger, 1050 Bruxelles, Belgium
R. Lannoye
Affiliation:
Laboratoire de Physiologie Végéale Université Libre de Bruxelles28 avenue Paul Heger, 1050 Bruxelles, Belgium
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Summary

Disks of hard wheat (Triticum durum Desf.) leaves subjected to rapid desiccation over 4 h showed noticeable changes in the shape of the in vivo chlorophyll fluorescence induction curves. In drought-sensitive varieties (such as Claridoc), water stress resulted in a strong inhibition of the slow fluorescence induction transients. In particular, the fluorescence quenching rate was markedly decreased in water-stressed leaf disks. In contrast, leaves of drought-resistant varieties (such as Aouedj) showed only minor changes in chlorophyll fluorescence. The results of this investigation suggest that the slow transient of the in vivo chlorophyll fluorescence induction phenomenon may provide a simple method for selecting drought-tolerant wheats.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 104 , Issue 3 , June 1985 , pp. 501 - 504
Copyright
Copyright © Cambridge University Press 1985

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