Ethyl Methanesulfonate (EMS)-Mediated Fruit Mutants Of Bitter Gourd (Meghna-2): A Popular Landrace Of West Bengal
Bibliographic record
Abstract
Ethyl methanesulfonate (EMS) is a stable and effective chemical mutagen. Bitter Gourd (Meghna-2) seeds were treated by 0.3, 0.5, and 1% EMS for 24 h and 48 h to optimize EMS mutagenesis. Median lethal dose of EMS was obtained at 0.3% EMS treated for 48 h. After treated by 0.3% EMS for 48 h, 250 M1 plants were grown in field for phenotype determination. In comparison to the control, a decline in germination, leaf shape, fruit size, fruit shape, vine length, and emergence was seen in the M1 generation when the concentration of applied EMS was increased. The fertility of M1 bitter gourd was very low and only 24 lines produced seeds after self crossing. Of the mutant 24 lines in the plant growth, five were dwarf, two were tall, four had retarded fruit size, and 13 had abnormal branching and flowering. Only four lines (G 6, G 9, G 14 and G 15) raised from M2 generations of Meghna-2, were screened critically and observed no significant reduction in seed germination and pollen viability but the fruit size was significantly decreased. Interestingly, the short fruit type and round shape of Meghna-2 (G 9) was chosen amongst the four due to farmer’s acceptability, which was grown further to confirm the stability.
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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 | 0.006 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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".