Screening Common Bean Genotypes for Tolerance to Low Zinc Availability Using a Chelate-Buffered Hydroponics System
Bibliographic record
Abstract
Abstract A chelate-buffered hydroponics system was assessed for its ability to induce zinc (Zn) deficiency in common bean and for its usefulness as a tool to select genotypes tolerant of Zn deficiency stress. Twenty-two common bean genotypes were evaluated for tolerance to Zn deficient conditions using the buffered hydroponics system. Relative yield (comparing growth under low Zn to adequate Zn conditions) and Zn and phosphorus (P) accumulation in plants were measured. Significant Zn deficiency stress was induced in all of the genotypes with relative yields ranging from 11.5 to 52.6%. Six genotypes were identified as being tolerant to low Zn. These six genotypes (E 101, AND 684, LSA 102, SUG 55, PVA 773, and CENTRO) all had relative yields >29%, were able to accumulate >60 µg Zn per plant from solution and were better able to regulate P uptake to avoid excessive P accumulation than the other genotypes. In a second experiment, a subset of seven genotypes grown in the chelate-buffered hydroponics systems were compared directly to plants grown in field soil. The two systems correlated well for total dry weight (r = 0.57, P < 0.001), shoot Zn content (µg g−1) (r = 0.58, P < 0.001), and total Zn content (µg g−1) (r = 0.64, P < 0.001) when plants were grown under low Zn conditions.
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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 | 0.000 | 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".