Genetic diversity of phoma stem canker pathogen Leptosphaeria biglobosa by ISSR
Bibliographic record
Abstract
The genetic diversity of Leptosphaeria biglobosa,causing phoma stem canker on oilseed rape,was analyzed using ISSR( inter simple sequence repeats) marker. 84 blackleg isolates were collected from China and 15 from the United Kingdom,Canada and Poland were used as control. A total of 245 bands generated by the ISSR- PCR with 24 selected primers were polymorphic. The dendrogram constructed with 99 individuals using UPGMA( unweighted pair group mean analysis) showed that Chinese isolates were different from Canada and Europe. Meanwhile,Chinese isolates from 7 provinces were almost divided into 5 groups according to their geographical locations only isolates from the Jiangsu Province distributed into other groups. Nei's gene diversity ranged from 0. 252 7( in Jiangsu) to 0. 108 1( in Sichuan),with the order of Jiangsu Hubei Anhui Inner Mongolia Shanghai Sichuan. Shannon's information index were from 0. 157 5 to 0. 372 6. The Nei's gene identity were 0. 783 9 between the China and Canada isolates,and 0. 834 3 between China and the United Kingdom isolates.
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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 | 0.001 |
| 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) | 0.000 | 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".