Evaluation of strawberry (Fragaria x ananassa Duch.) cultivar's salt stress tolerance on the basis of S1 seeds in vitro germination
Bibliographic record
Abstract
Ten strawberry cultivars and one breeding clone were evaluated for their salt tolerance under in vitro culture conditions on the basis of S seed germination. Salinity stress was simulated by the mixture of four salts (75mM NaCl, 50 mM Na 2 SO 4 , 10 mM CaCl 2 , 5 mM MgCl 2 ) to balance different types of ions. Germination of seeds was observed for 10 weeks. Coefficients describing reduction of seed germination (RSG and MR) were calculated. Cluster analysis separated all clones into 3 groups. The first cluster comprises cultivars 'Toringa', 'Pegasus', 'Ottawa' and clone Pau/26 with low germination under in vitro culture conditions. The last selection seems not to be affected by applied salt concentration. The second group was formed by moderately (60-69%) germinating cultivars: 'Silver Jubilee', 'Fraginette', 'Tenira', 'Governor Simcoe' and 'Lvovskaya Rannaya'. Out of them 'Governor Simcoe' showed low reduction of seed germination (RGS 33%). The third group was represented by well-germinating cvs. 'Fleteher' and 'Senga Litessa'. 'Fletcher' was tolerant to applied salt concentration (RSG 17.4%). Obtained data suggest that cluster analysis reflected mainly tested cultivars' general ability to germinate at in vitro conditions. On the basis of the mean reduction in 10 t h week values (MR 1 0 ) genotypes can be arranged from most susceptible to most salt tolerant in the following order: 'Toringa'> 'Ottawa'> 'Pegasus'>'Fraginette'> 'Lvovskaya Rannaya'> 'Silver Jubilees' > 'Tenira'> 'Governor Simcoe'>'Senga Litessa'> 'Fletcher'> Pau/26. Clone Pau/26 showing the lowest MR 1 0 value in the test was selected at in vitro conditions as an individual plant able to germinate and grow on medium containing 200 mM NaCl. This implies that at least in the case of this genotype ability to germinate and sustain growth on salt containing medium was transmitted to S 1 generation.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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 teacher head, 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".