Abstract
Background: Evaluation of the tolerance level of rice to iron (Fe) toxicity stress can be done using a hydroponic system in a nutrient culture solution under a controlled condition. This study aimed to obtain a nutrient culture solution that effective as a medium for evaluating the response of rice under Fe toxicity stress condition. Methods: This experiment was carried out by comparing the effectiveness of three kinds of nutrient culture media, namely Yoshida’s Half-Strength solution (HSY), Yoshida’s Half-Strength + 0.2% agar solution (HSYA), and Yoshida’s Full-Strength + 0.2% agar solution (FSYA) using two rice genotypes, Inpara 5 (sensitive to Fe toxicity) and Mahsuri (tolerant to Fe toxicity). Leaf bronzing level, plant dry weight, and pH of nutrient culture media were observed in this experiment. Results: The results showed that the stress response as represented by the bronzing score in Inpara 5 leaves was known to be higher than that of Mahsuri in the three nutrient culture media. The decrease of root and shoot dry weight in Inpara 5 was higher than that of Mahsuri. In addition, the decrease in the pH of nutrient culture solution media without an agar addition (HSY) occurred faster than the media with the agar addition (HSYA and FSYA). Conclusion: The HSYA and FSYA media exhibited a similar pattern of pH declining but causing significant differences in growth responses between Inpara 5 and Mashuri indicating the HSYA medium is considered more efficient compared to the FSYA medium because it only requires a smaller amount of agar.
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Claims 7
Claim · model-written summary
Inpara 5 had a higher leaf bronzing score than Mahsuri in all three media.
- Taxon
- rice
Oryza sativat0 - Material
- Inpara 5e0
- Outcome
- bronzing scoree0
- Direction
- highere0
- Qualifier
- three nutrient culture mediae0
- Comparator
- Mahsurie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the bronzing score in Inpara 5 leaves was known to be higher than that of Mahsuri in the three nutrient culture media”
t0“Rice”
Claim · model-written summary
The root dry-weight decrease was greater in Inpara 5 than Mahsuri.
- Taxon
- riceOryza sativat0
- Material
- Inpara 5e0
- Organ / stage
- roote0
- Outcome
- root and shoot dry weighte0
- Direction
- decreasee0
- Comparator
- Mahsurie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease of root and shoot dry weight in Inpara 5 was higher than that of Mahsuri”
t0“Rice”
Claim · model-written summary
The shoot dry-weight decrease was greater in Inpara 5 than Mahsuri.
- Taxon
- riceOryza sativat0
- Material
- Inpara 5e0
- Organ / stage
- shoote0
- Outcome
- root and shoot dry weighte0
- Direction
- decreasee0
- Comparator
- Mahsurie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease of root and shoot dry weight in Inpara 5 was higher than that of Mahsuri”
t0“Rice”
Claim · model-written summary
Medium pH fell faster without agar than with agar.
- Treatment
- without an agar addition (HSY)e0
- Outcome
- pH of nutrient culture solution mediae0
- Direction
- decreasee0
- Comparator
- media with the agar addition (HSYA and FSYA)e0
Not reportedTaxon
Verbatim
e0“the decrease in the pH of nutrient culture solution media without an agar addition (HSY) occurred faster than the media with the agar addition (HSYA and FSYA)”
Claim · model-written summary
HSYA and FSYA showed similar pH decline patterns.
Not reportedTaxonMaterial
Verbatim
e0“The HSYA and FSYA media exhibited a similar pattern of pH declining”
Claim · model-written summary
HSYA and FSYA caused significant differences in growth responses between Inpara 5 and Mashuri.
- Taxon
- riceOryza sativat0
- Material
- Inpara 5 and Mashurie0
- Treatment
- HSYA mediume0
- Outcome
- growth responsese0
- Comparator
- FSYA mediume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“causing significant differences in growth responses between Inpara 5 and Mashuri indicating the HSYA medium is considered more efficient compared to the FSYA medium because it only requires a smaller amount of agar”
t0“Rice”
Claim · model-written summary
HSYA was judged more efficient than FSYA because it required less agar.
- Taxon
- riceOryza sativat0
- Treatment
- HSYA mediume0
- Outcome
- more efficiente0
- Direction
- more efficiente0
- Qualifier
- smaller amount of agare0
- Comparator
- FSYA mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the HSYA medium is considered more efficient compared to the FSYA medium because it only requires a smaller amount of agar”
t0“Rice”