Abstract
The effects of HCO3- on shoot and root dry matter content, total and HCl-extractable iron uptake, and leaf visual chlorosis were studied in maize. Thirteen hybrid maize varieties were grown in perlite and irrigated with nutrient solutions consisting of basic nutrient solution with 20 µM FeEDTA (control), iron-free nutrient solution (direct deficiency) and complete basic nutrient solution supplemented with 7.5, 15.0 or 30.0 mH HCO3- (indirect bicarbonate-induced iron deficiency). The application of 20 µM Fe-EDTA increased shoot and root dry weights in general, as well as the 1N HCl-extractable iron and total iron concentrations in shoots and roots. Slight growth reduction and dry weight loses were determined, but total and 1N HCl-extractable iron concentration, and 1N HCl-extractable iron concentration in shoots and roots were severely effected with the increasing amounts of HCO3-. High leaf chlorosis score, and low root and shoot dry weight values were recorded for all maize varieties. Based on visual deficiency scores, dry weight, and total iron content, and 1N HCl-extractable iron content, Kendo and C-955 were selected as the most tolerant cultivars, whereas IsIdoro MF was identified as the least tolerant cultivar
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Claims 8
Claim · model-written summary
Fe-EDTA application increased shoot and root dry weights of maize in general.
- Treatment
- 20 µM Fe-EDTAe1
- Outcome
- shoot and root dry weightse1
- Direction
- increasede1
- Qualifier
- in generale1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of HCO3- on shoot and root dry matter content, total and HCl-extractable iron uptake, and leaf visual chlorosis were studied in maize”
e1“The application of 20 µM Fe-EDTA increased shoot and root dry weights in general”
Claim · model-written summary
Fe-EDTA application increased HCl-extractable and total iron concentrations in shoots and roots of maize.
- Organ / stage
- shoots and rootse2
- Treatment
- 20 µM Fe-EDTAe2
- Outcome
- HCl-extractable iron and total iron concentrationse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of HCO3- on shoot and root dry matter content, total and HCl-extractable iron uptake, and leaf visual chlorosis were studied in maize”
e2“The application of 20 µM Fe-EDTA increased shoot and root dry weights in general, as well as the 1N HCl-extractable iron and total iron concentrations in shoots and roots”
Claim · model-written summary
Increasing HCO3- severely affected total and HCl-extractable iron concentrations in shoots and roots of maize.
- Organ / stage
- shoots and rootse3
- Treatment
- increasing amounts of HCO3-e3
- Outcome
- total and 1N HCl-extractable iron concentratione3
- Direction
- severely effectede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of HCO3- on shoot and root dry matter content, total and HCl-extractable iron uptake, and leaf visual chlorosis were studied in maize”
e3“Slight growth reduction and dry weight loses were determined, but total and 1N HCl-extractable iron concentration, and 1N HCl-extractable iron concentration in shoots and roots were severely effected with the increasing amounts of HCO3-”
Claim · model-written summary
Increasing HCO3- caused slight growth reduction and dry weight losses in maize.
- Treatment
- increasing amounts of HCO3-e3
- Outcome
- growth reduction and dry weight losese3
- Direction
- reductione3
- Qualifier
- Slighte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of HCO3- on shoot and root dry matter content, total and HCl-extractable iron uptake, and leaf visual chlorosis were studied in maize”
e3“Slight growth reduction and dry weight loses were determined, but total and 1N HCl-extractable iron concentration, and 1N HCl-extractable iron concentration in shoots and roots were severely effected with the increasing amounts of HCO3-”
Claim · model-written summary
High leaf chlorosis scores were recorded for all maize varieties under the bicarbonate treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“High leaf chlorosis score, and low root and shoot dry weight values were recorded for all maize varieties”
Claim · model-written summary
Root and shoot dry weight values were low for all maize varieties under the bicarbonate treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“High leaf chlorosis score, and low root and shoot dry weight values were recorded for all maize varieties”
Claim · model-written summary
Kendo and C-955 were the most tolerant maize cultivars.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of HCO3- on shoot and root dry matter content, total and HCl-extractable iron uptake, and leaf visual chlorosis were studied in maize”
e7“Based on visual deficiency scores, dry weight, and total iron content, and 1N HCl-extractable iron content, Kendo and C-955 were selected as the most tolerant cultivars”
Claim · model-written summary
IsIdoro MF was the least tolerant maize cultivar.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of HCO3- on shoot and root dry matter content, total and HCl-extractable iron uptake, and leaf visual chlorosis were studied in maize”
e5“whereas IsIdoro MF was identified as the least tolerant cultivar”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.