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Correct identification of cereal varieties is important to food quality, safety and authenticity and recently, molecular markers have been applied to cereal varietal identification. Two major factors restricting the wider application of molecular markers in crop plant genetics have been throughput and cost per data point. However, in recent years, novel molecular tools, the re-invention/re-application of mature technologies, and miniaturisation of technology has both increased throughput and significantly reduced these costs. Here we have applied Sequenom® MassARRAY® MALDI-TOF mass spectrometry using a collection of recently developed SNPs to facilitate cereal varietal identification. We used a multiplexed Sequenom® MassARRAY® mass spectrometry SNP assay targeting 45 loci to genotype a collection of Australian barley varieties. Of the 45 loci screened, 33 were informative and were used to generate a unique barcode of SNPs for each variety tested. Only one variety could not be distinguished from two others due to a high level of varietal heterogeneity. This assay format provided a flexible, cost-effective, robust and moderate throughput SNP genotyping method well suited to varietal identification and purity analysis in cereals.  相似文献   
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In the past several decades, the tropospheric westerly winds in the Southern Hemisphere have been observed to accelerate on the poleward side of the surface wind maximum. This has been attributed to the combined anthropogenic effects of increasing greenhouse gases and decreasing stratospheric ozone and is predicted to continue by the Intergovernmental Panel on Climate Change/Fourth Assessment Report (IPCC/AR4) models. In this paper, the predictions of the Chemistry-Climate Model Validation (CCMVal) models are examined: Unlike the AR4 models, the CCMVal models have a fully interactive stratospheric chemistry. Owing to the expected disappearance of the ozone hole in the first half of the 21st century, the CCMVal models predict that the tropospheric westerlies in Southern Hemisphere summer will be decelerated, on the poleward side, in contrast with the prediction of most IPCC/AR4 models.  相似文献   
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An 18-month-old male castrated indoor Himalayan cat was presented for recurrent fever, lethargy, and uveitis. Persistent neutropenia was identified and tests for infectious disease and bone marrow cytology were performed. Primary immune-mediated neutropenia was diagnosed and successfully treated. At the time of writing this report, 24 mo after the initial diagnosis. the patient was clinically normal and not receiving therapy.  相似文献   
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The theory of linkage and QTL analysis in autotetraploids is summarised. Applications are presented to the analysis of quantitative disease resistance in the European cultivated potato, Solanum tuberosum subsp. tuberosum. The implications are discussed for practical potato breeding, practical QTL analysis and theory. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
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Arsenic in detergents: possible danger and pollution hazard   总被引:1,自引:0,他引:1  
Arsenic at a concentration of 10 to 70 parts per million has been detected in several common presoaks and household detergents. Arsenic values of 2 to 8 parts per billion have been measured in the Kansas River. These concentrations are close to the amount (10 parts per billion) recommended by the United States Public Health Service as a drinking-water standard.  相似文献   
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