Abstract
The carbon ion-beam has emerged as a novel physical mutagen for creating genetic variability and crop improvement. In this study, seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy. The radiosensitivity test was conducted to determine the optimum dose of carbon ion beam irradiation based on the lethal dose 50% (LD50) using Sandwich Blotter Technique. The biological responses of carbon-ion beam irradiation were also observed in other characteristics such as germination rate (GeR), survival rate (SR), growth rate (GRoR), shoot length (SL), root length (RL), seedling height (SH), days to flowering (DTF), fertility rate (FR) and thousand-grains weight (TGW). Based on the polynomial curve of SR graph, the lethal dose 50% (LD50) value was 86.12 Gy. However, the optimum dose range of carbon ion-beam irradiation was between 40 and 60 Gy as these two doses recorded the highest SR, 63 and 67%, respectively. Furthermore, the shoulder dose in this study was 60 Gy since SR decreased significantly at higher doses. M1 individuals irradiated at 40 and 60 Gy had the best biological responses where significant differences were found for SR, SL, RL, GRoR, SH, DTF and FR at these two doses compared to the other doses. Further studies on M2 and M3 populations could help to identify potential individuals as well as to understand the inheritance of each trait of interest from one generation to the next.
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Claims 8
Claim · model-written summary
The lethal dose 50% of carbon-ion beam irradiation for rice line MR219-PL-5 was 86.12 Gy.
- Taxon
- rice
Oryza sativae0 - Material
- MR219-PL-5e0
- Treatment
- carbon ion beam irradiatione0
- Outcome
- lethal dose 50% (LD50)e1
- Value
- 86.12 Gye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e1“Based on the polynomial curve of SR graph, the lethal dose 50% (LD50) value was 86.12 Gy”
Claim · model-written summary
Survival rate was highest at the 40 to 60 Gy carbon-ion beam doses, at 63% and 67%.
- Taxon
- riceOryza sativae0
- Treatment
- carbon ion-beam irradiatione2
- Outcome
- SRe2
- Direction
- higheste2
- Value
- 63 and 67%e2
- Qualifier
- between 40 and 60 Gye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e2“the optimum dose range of carbon ion-beam irradiation was between 40 and 60 Gy as these two doses recorded the highest SR, 63 and 67%, respectively”
Claim · model-written summary
The shoulder dose of carbon-ion beam irradiation was 60 Gy in rice line MR219-PL-5.
- Taxon
- riceOryza sativae0
- Outcome
- shoulder dosee3
- Value
- 60 Gye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e3“the shoulder dose in this study was 60 Gy since SR decreased significantly at higher doses”
Claim · model-written summary
Survival rate decreased significantly at higher carbon-ion beam doses.
- Taxon
- riceOryza sativae0
- Treatment
- higher dosese3
- Outcome
- SRe3
- Direction
- decreasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e3“the shoulder dose in this study was 60 Gy since SR decreased significantly at higher doses”
Claim · model-written summary
M1 plants irradiated at 40 and 60 Gy had the best biological responses compared with the other doses.
- Taxon
- riceOryza sativae0
- Treatment
- irradiated at 40 and 60 Gye4
- Outcome
- biological responsese4
- Direction
- beste4
- Comparator
- the other dosese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e4“M1 individuals irradiated at 40 and 60 Gy had the best biological responses where significant differences were found for SR, SL, RL, GRoR, SH, DTF and FR at these two doses compared to the other doses”
Claim · model-written summary
M1 plants irradiated at 40 and 60 Gy differed significantly from other doses in survival rate, shoot length and root length.
- Taxon
- riceOryza sativae0
- Treatment
- irradiated at 40 and 60 Gye4
- Outcome
- SR, SL, RLe4
- Comparator
- the other dosese4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e4“M1 individuals irradiated at 40 and 60 Gy had the best biological responses where significant differences were found for SR, SL, RL, GRoR, SH, DTF and FR at these two doses compared to the other doses”
Claim · model-written summary
M1 plants irradiated at 40 and 60 Gy differed significantly from other doses in germination-related growth rate, seedling height and days to flowering.
- Taxon
- riceOryza sativae0
- Treatment
- irradiated at 40 and 60 Gye4
- Outcome
- GRoR, SH, DTFe4
- Comparator
- the other dosese4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e4“M1 individuals irradiated at 40 and 60 Gy had the best biological responses where significant differences were found for SR, SL, RL, GRoR, SH, DTF and FR at these two doses compared to the other doses”
Claim · model-written summary
M1 plants irradiated at 40 and 60 Gy differed significantly from other doses in fertility rate.
- Taxon
- riceOryza sativae0
- Treatment
- irradiated at 40 and 60 Gye4
- Outcome
- FRe4
- Comparator
- the other dosese4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds of a high-yielding pyramided rice line MR219-PL-5 were exposed to carbon ion beam irradiation at 10, 20, 40, 60, 80, and 100 Gy”
e4“M1 individuals irradiated at 40 and 60 Gy had the best biological responses where significant differences were found for SR, SL, RL, GRoR, SH, DTF and FR at these two doses compared to the other doses”
The same questions in other papers
radiation · growth · Oryza sativa (rice)Results differ
21 papers in the same direction as this paper · 60 in the opposite direction · 2 reporting no difference from an alternative
- positive
- no effect
- negative
80 papers more in this group
See all 84 papers →radiation · survival · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
5 papers more in this group
See all 9 papers →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.