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Abstract: Using NIRS to Measure Peeling and Predict Potential to Peel in Hulled Two-row Barley

 
 
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 Peeling in barley is the partial or total removal of the hulls from the kernel that may occur during the handling processes of harvesting, marketing, malting and brewing. This poster presents results of a joint BMBRI/AARI funded project entitled "Hull Adherence in Hulled Malting Barley" with the objective of developing a method for rapidly assessing potential to peel prior to malting. A mechanical device to induce peeling, based on Dr. Norm Kendall’s air-blast dehuller, and a protocol for its use were developed. Sample sets were developed and used for equation development using Near-Infrared Reflectance Spectroscopy (NIRS). Two final NIRS equations were developed, one to measure percent peeled kernels in two-row hulled barley and the other to predict the potential of two-row hulled barley to peel with air-blasting. Validation of the equations was made using samples from the 2001 Western Cooperative Two-Row Barley Test. Because of the large environmental effect on initial percent peeled and sampling errors of 2 to 7%, sampling from multiple locations and using air-blasting to cause an extreme peeling event were necessary to determine that differences between lines were genotypic and not due to error and g x e effects. The NIRS equations consistently identified genotypic difference in peeling with some lines consistently having excellent hull adherence and others consistently having a tendency to peel. The use of the NIRS equations developed will allow us to rapidly and efficiently (small sample size, only one scan needed per sample, and non-destructive) determine percent peeled and potential to peel of two-row hulled barley.

Pat Juskiw, Jim Helm and Lori Oatway
Alberta Agriculture, Food & Rural Development, Field Crop Development Centre, Lacombe, AB.

Presented at the 3rd Canadian Barley Symposium, June 19-20, 2003

  
 
 
 
For more information about the content of this document, contact Lori Oatway.
This information published to the web on September 29, 2003.
Last Reviewed/Revised on October 12, 2003.