| |
Abstract: Variations and Expression of Seed Dormancy in Barley | |
| |
|
|
| |
|
|
| | Extremely low levels of seed dormancy could contribute to undesirable pre-harvest sprouting damage to barley while extremely high levels of seed dormancy are undesirable in malting barley. The aim of this study was to determine the genotypic variations and quantify the levels of seed dormancy in a barley population of 239 lines (genotypes). The lines were grown in the field in 0.6m plots at the Field Crop Development Centre at Lacombe, AB. Seed samples were hand-harvested at approximately 25% moisture content (wet weight basis) and dried to 12% moisture content with minimal after ripening. The germination of hand-threshed seeds was conducted under controlled environment at 18oC and relative humidity of >95% within a seed germinating cabinet. A weighted germination index (WGI) was calculated. The analysis of variance showed highly significant (P</=0.01) WGI for genotypic effects. The genotype WGI mean values ranged between 0.03 (high dormancy level) and 0.99 (lowest dormancy level) and the population WGI mean value was 0.67. The results indicate there is a wide range of seed dormancy levels among lines in the barley population of the current study.
Joseph M. Nyachiro, Jennifer Zantinge, James H. Helm, and Patricia Juskiw
Alberta Agriculture, Food & Rural Development, Field Crop Development Centre
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 October 3, 2003.
Last Reviewed/Revised on November 10, 2009.
|
|