Kvasny Prum. 2003; 49(10): 290-295 | DOI: 10.18832/kp2003018

Barley Dormancy in Crop Years 2001 and 2002.Peer-reviewed article

Josef PROKEŠ

VÚPS Praha, a. s., Sladařský ústav Brno

Barley dormancy has already become part of variety quality evaluation. The depth of dormancy has been verified by means of determination of germination power on Petri dishes with 4 ml of water in 72 hours in a thermostat at 20 °C.The determination had taken place always 6 weeks after crop. It has been confirmed that the dormancy of barley is influenced by the time of origin. The crop in 2002 compared to year 2001 showed statistically inconclusively higher germination power and statistically conclusively higher speed of germination and thus it can be stated the 2002 crop had a lower intensity of dormancy. Only a slight influence of barley variety has been proved, since the order of varieties was not identical in both crop years being evaluated and the differences were not statistically conclusive. Further, it has been proved that the number of previous crops for barley has increased significantly, but the influence of some of them on the barley quality has not been verified at all. The influence of a previous crop on the length of after-crop maturing has not been proved in these trial years and barley samples collection. It has been proved that the use of the calculation of the speed of germination from the data of barley germination power allows a more distinct recognition of barley varieties among each other. The presented results were obtained within the frame of the research project of NAZV, registration number QC 1096 "Research of factors of quality optimization of cereals production in the Czech Republic".Barley dormancy has already become part of variety quality evaluation. The depth of dormancy has been verified by means of determination of germination power on Petri dishes with 4 ml of water in 72 hours in a thermostat at 20 °C.The determination had taken place always 6 weeks after crop. It has been confirmed that the dormancy of barley is influenced by the time of origin. The crop in 2002 compared to year 2001 showed statistically inconclusively higher germination power and statistically conclusively higher speed of germination and thus it can be stated the 2002 crop had a lower intensity of dormancy. Only a slight influence of barley variety has been proved, since the order of varieties was not identical in both crop years being evaluated and the differences were not statistically conclusive. Further, it has been proved that the number of previous crops for barley has increased significantly, but the influence of some of them on the barley quality has not been verified at all. The influence of a previous crop on the length of after-crop maturing has not been proved in these trial years and barley samples collection. It has been proved that the use of the calculation of the speed of germination from the data of barley germination power allows a more distinct recognition of barley varieties among each other. The presented results were obtained within the frame of the research project of NAZV, registration number QC 1096 "Research of factors of quality optimization of cereals production in the Czech Republic".

Keywords: barley, dormancy, quality, germination

Published: October 1, 2003