Abstract
Three different doses of low-energy N+ ion beam were injected into the embryo of diploid rice seeds and corresponding autotetraploids. The germination capacity,seedling rate and five major physiological indexes superoxide dismutase (SOD),peroxidase (POD),catalase (CAT),malonaldehyde (MDA),and soluble sugar were examined preliminarily at seedling period. The results showed that with the increase of the implantation dose,the germination capacity and seedling rate of experimental materials tended to decline,and the difference between each treatment group and CK reached the particularly significant level(P0.01) under the maximum dose (5.0×1017N+/cm2). The SOD,POD and CAT activity of diploid materials increased first and then decreased with the dose increasing,and all of them reached the maximum at the dose of 3.0×1017N+/cm2,while the SOD,PODand CAT activity of tetraploid materials showed increase-decrease-increase curve and all of them reached maximum at 1.0×1017N+/cm2. The MDA content of diploid materials decreased first and then increased with the dose increasing,while that of tetraploid materials showed decrease-increase-decrease curve. There was no particularly significant difference among the treatment group of soluble sugar content,but the content of soluble sugar was lower than that of the CK. Thus,different doses of low-energy N+ ion beam had a significant effects on the germination capacity,seedling rate and main physiological characteristics of rice with different chromosome sets in seedling period,and there were also some differences between materials with different ploidies.
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Claims 7
Claim · model-written summary
Increasing implantation dose reduced germination capacity and seedling rate, with particularly significant differences from CK at the maximum dose.
- Taxon
- rice
Oryza sativat0 - Treatment
- implantation dosee0
- Outcome
- germination capacity and seedling ratee0
- Direction
- declinee0
- Value
- 5.0×1017N+/cm2e0
- Qualifier
- P0.01e0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the increase of the implantation dose,the germination capacity and seedling rate of experimental materials tended to decline,and the difference between each treatment group and CK reached the particularly significant level(P0.01) under the maximum dose (5.0×1017N+/cm2)”
t0“rice (O.sativa)”
Claim · model-written summary
Diploid SOD, POD and CAT activity rose then fell with dose and peaked at 3.0×1017N+/cm2.
- Taxon
- riceOryza sativat0
- Material
- diploid materialse0
- Treatment
- dosee0
- Outcome
- SOD,POD and CAT activitye0
- Direction
- increased first and then decreasede0
- Value
- 3.0×1017N+/cm2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SOD,POD and CAT activity of diploid materials increased first and then decreased with the dose increasing,and all of them reached the maximum at the dose of 3.0×1017N+/cm2”
t0“rice”
Claim · model-written summary
Tetraploid SOD, POD and CAT activity followed an increase-decrease-increase pattern and peaked at 1.0×1017N+/cm2.
- Taxon
- riceOryza sativat0
- Material
- tetraploid materialse0
- Outcome
- SOD,PODand CAT activitye0
- Direction
- increase-decrease-increasee0
- Value
- 1.0×1017N+/cm2e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the SOD,PODand CAT activity of tetraploid materials showed increase-decrease-increase curve and all of them reached maximum at 1.0×1017N+/cm2”
t0“rice”
Claim · model-written summary
Diploid MDA content declined then rose with increasing dose.
- Taxon
- riceOryza sativat0
- Material
- diploid materialse0
- Treatment
- dosee0
- Outcome
- MDA contente0
- Direction
- decreased first and then increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MDA content of diploid materials decreased first and then increased with the dose increasing”
t0“rice”
Claim · model-written summary
Tetraploid MDA content followed a decrease-increase-decrease pattern with dose.
- Taxon
- riceOryza sativat0
- Material
- tetraploid materialse0
- Treatment
- dosee0
- Outcome
- MDA contente0
- Direction
- decrease-increase-decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MDA content of diploid materials decreased first and then increased with the dose increasing,while that of tetraploid materials showed decrease-increase-decrease curve.”
t0“rice”
Claim · model-written summary
Soluble sugar content did not differ particularly significantly among treatments.
- Taxon
- riceOryza sativat0
- Treatment
- treatment groupe0
- Outcome
- soluble sugar contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no particularly significant difference among the treatment group of soluble sugar content”
t0“rice”
Claim · model-written summary
Soluble sugar content was lower than CK.
- Taxon
- riceOryza sativat0
- Outcome
- content of soluble sugare0
- Direction
- lowere0
- Comparator
- CKe0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of soluble sugar was lower than that of the CK”
t0“rice”