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The head to head query allows a breeder to compare the performance of test germplasm to standard entries across studies. Breeders can filter and weight results by location or studies.
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Test and Standard Entries
Specify test and standard germplasm one entry at a time or by selecting a predefined list. Select Next.
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In this example 10 test entries are being compared to 10 standard entries, resulting in 100 pairwise comparisons.
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Choose the trait(s) of interest for comparison. Choose the direction of selection. Increasing is the default direction of selection, because for most traits breeders select based on larger values. However, some for some traits, like days to flowering (antheisis), decreasing values may be favorable. Select Next.
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Select Environments
All of the environments shared by the standard and test entries are listed and can be filtered by location or study. Additional environmental conditions can be added to the table to assist selection. The importance of individual environments can be adjusted by assigning differential weights.
Select the environments of interest and specify weight. By default, all selected environments are deemed important with equal weight in the comparisons. Select Next.
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Results
The results are summarized by trait in tabular form. A p-values below 0.05 indicates that the test entry preforms significantly better than the standard entry.
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