Mapping of the loci controlling the resistance to Pyrenophora teres f. teres and Cochliobolus sativus in two double haploid barley populations
Bibliographic record
Abstract
Net blotch of barley ( Hordeum vulgare L.), caused by Pyrenophora teres f. teres , and spot blotch, caused by Cochliobolus sativus , are the most widespread and harmful diseases in the geographic range of the crop. Barley breeding for resistance to these diseases should employ large genetic diversity. The 11_11067 SNP marker was revealed on chromosome 6H position 58 cM in the double haploid (DH) population A developed by crossing the Ethiopian accession k-23874, highly resistant to P. teres f. teres , to the susceptible Pirkka cultivar. It was reliably ( p < 0.05) associated with resistance to three P. teres f. teres isolates. In population B (Zernogradsky 813 (MR to C. sativus ) Ranniy 1 (MR to P. teres f. teres ), 11 QTL controlling resistance to 12 P. teres f. teres isolates were found on all barley chromosomes and 14 QTL for resistance to 12 C. sativus isolates, on all chromosomes except for 4H. For both pathogens, the revealed QTL were shown to be isolate-specific. The majority of the loci detected were mapped in the same intervals between SNP markers where QTL controlling resistance to P. teres f. teres and C. sativus had been found by other scientists. Four novel QTL controlling resistance to P. teres f. teres were found on chromosomes 1H, 4H, and 5H. Five novel QTL associated with resistance to C. sativus were found on chromosomes 2H, 3H, 5H, and 6H in DH population B.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".