Authors:
K. Balla Hungarian Academy of Sciences Agricultural Institute, Centre for Agricultural Research Martonvásár Hungary

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I. Karsai Hungarian Academy of Sciences Agricultural Institute, Centre for Agricultural Research Martonvásár Hungary

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S. Bencze Hungarian Academy of Sciences Agricultural Institute, Centre for Agricultural Research Martonvásár Hungary

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T. Kiss Hungarian Academy of Sciences Agricultural Institute, Centre for Agricultural Research Martonvásár Hungary

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O. Veisz Hungarian Academy of Sciences Agricultural Institute, Centre for Agricultural Research Martonvásár Hungary

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Stress tolerance is associated with the activation of antioxidant compounds and enzyme systems that are capable of neutralising the reactive oxygen species (ROS) continually produced in response to stress. The present experiment was designed to compare the heat tolerance of four winter wheat varieties in the shooting and grain-filling stages by investigating changes detected in antioxidant enzyme activity and yield components in response to heat stress.Heat treatment was found to cause a significant rise in the activity of the glutathione-S-transferase and catalase enzymes, while there was usually a less intense decline in the activity of guaiacol peroxidase.An analysis of yield data revealed that heat stress had a more pronounced effect during grain filling in this experiment than at the beginning of shooting, as shown by the greater reduction in thousand-kernel weight and yield.

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Acta Agronomica Hungarica
Language English
Russian
German
French
Size  
Year of
Foundation
1950
Publication
Programme
ceased
Volumes
per Year
 
Issues
per Year
 
Founder Magyar Tudományos Akadémia   
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0238-0161 (Print)
ISSN 1588-2527 (Online)

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