Destruction of chlorophyll in emerging seedlings of spring barley associated with environmental stresses

Václav Kůdela, Bohumila Voženílková, Radka Krejzarová, Václav Krejzar and Michal Janouch
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Václav Kůdela: Department of Bacteriology, Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic
Bohumila Voženílková: Faculty of Agriculture, University of South Bohemia, České Budějovice, Czech Republic
Radka Krejzarová: Department of Bacteriology, Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic
Václav Krejzar: Department of Bacteriology, Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic
Michal Janouch: Solar and Ozone Observatory, Czech Hydrometeorological Institute, Hradec Králové, Czech Republic

Plant Protection Science, 2005, vol. 41, issue 4, 165-170

Abstract: An unusual disorder occurred on spring barley seedlings in southern and central Bohemia in April 2005. Affected seedlings showed conspicuous bleached or straw-coloured areas on tips of the first leaves. There were very sharp, distinct, horizontal boundaries between the green basal and discoloured tip parts of the leaves. It was remarkable that these boundaries were at the same position on all affected first leaves of seedlings from the same field. Affected seedlings were randomly distributed in the fields, and their incidence ranged from about 20 to 70% according to location. Based on meteorological data it can be concluded that the colour abnormality in emerging seedlings was associated with specific environmental stresses, being effective in certain chronological order on sensitive plant tissues during the period from 6 to 8 days after seeding. These stresses include frosty mornings followed by clear days with high solar radiation with a high UV Index.

Keywords: Hordeum vulgare L.; colour abnormality; environmental stresses; UV radiation; Czech Republic (search for similar items in EconPapers)
Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:41:y:2005:i:4:id:2752-pps

DOI: 10.17221/2752-PPS

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