Abstract
Rice is an important food crop, acting as the staple food for more than 50% of the global population. We selected seedlings (two sterile male lines: WA803A and JW803A) that had different cytoplasmic but the same nuclear composition and were heterogeneous. The maintainer line 803B was also used. We aimed to study their nitrogen uptake rate in different concentrations of NH4+ and NO3− and explore the differences in nitrogen uptake efficiency between different cytoplasmic genes. The results showed a significant difference in the nitrogen uptake rate for different seedlings. With ammonium nutrition, the nitrogen uptake efficiency of the JW cytoplasm was significantly higher than that of the WA cytoplasm. In low concentrations of ammonium nitrogen, the JW cytoplasm had an additive effect to the nuclear gene regulation of ammonium uptake. The JW cytoplasm’s ammonium nitrogen absorption effect on nuclear gene regulation was higher than that of the WA cytoplasm. The effect of the WA and JW cytoplasms on the nitrate uptake rate was not significant, and the nuclear gene regulation of both cytoplasms was reduced by absorbing nitrate. Under nitrogen deficiency conditions, the material output and conversion rate of the JW-type cytoplasmic hybrid rice combination was relatively high, significantly higher than those of other cytoplasmic combinations. Under medium nitrogen conditions, the material output and conversion rate of the (N2) W-type hybrid rice combination were significantly higher than those of the other cytoplasmic combinations. The yield of JW-type rice first increased and then decreased with the increase in the nitrogen application rate and was highest, 8195.55 kg/hm2, under the N2 treatment.
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Claims 11
Claim · model-written summary
Nitrogen uptake rate differed significantly among rice seedlings.
- Taxon
- Rice
Oryza sativat0 - Outcome
- nitrogen uptake ratee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e1“The results showed a significant difference in the nitrogen uptake rate for different seedlings.”
Claim · model-written summary
Under ammonium nutrition, JW cytoplasm had significantly higher nitrogen uptake efficiency than WA cytoplasm.
- Taxon
- RiceOryza sativat0
- Material
- JW cytoplasme2
- Treatment
- ammonium nutritione2
- Outcome
- nitrogen uptake efficiencye2
- Direction
- highere2
- Comparator
- WA cytoplasme2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e2“With ammonium nutrition, the nitrogen uptake efficiency of the JW cytoplasm was significantly higher than that of the WA cytoplasm.”
Claim · model-written summary
At low ammonium nitrogen concentrations, JW cytoplasm had an additive effect on the nuclear gene regulation of ammonium uptake.
- Taxon
- RiceOryza sativat0
- Material
- JW cytoplasme3
- Treatment
- low concentrations of ammonium nitrogene3
- Outcome
- ammonium uptakee3
- Qualifier
- additive effect to the nuclear gene regulatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e3“In low concentrations of ammonium nitrogen, the JW cytoplasm had an additive effect to the nuclear gene regulation of ammonium uptake.”
Claim · model-written summary
The JW cytoplasm ammonium absorption effect on nuclear gene regulation was higher than that of WA cytoplasm.
- Taxon
- RiceOryza sativat0
- Material
- JW cytoplasme4
- Outcome
- ammonium nitrogen absorption effect on nuclear gene regulatione4
- Direction
- highere4
- Comparator
- WA cytoplasme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e4“The JW cytoplasm’s ammonium nitrogen absorption effect on nuclear gene regulation was higher than that of the WA cytoplasm.”
Claim · model-written summary
The WA and JW cytoplasms had no significant effect on the nitrate uptake rate.
- Taxon
- RiceOryza sativat0
- Material
- WA and JW cytoplasmse5
- Outcome
- nitrate uptake ratee5
- Direction
- no_changeinferrede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e5“The effect of the WA and JW cytoplasms on the nitrate uptake rate was not significant”
Claim · model-written summary
Absorbing nitrate reduced the nuclear gene regulation of both cytoplasms.
- Taxon
- RiceOryza sativat0
- Material
- both cytoplasmse6
- Treatment
- absorbing nitratee6
- Outcome
- nuclear gene regulatione6
- Direction
- reducede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e6“the nuclear gene regulation of both cytoplasms was reduced by absorbing nitrate.”
Claim · model-written summary
Under nitrogen deficiency, the JW-type cytoplasmic hybrid rice combination had significantly higher material output and conversion rate than other cytoplasmic combinations.
- Taxon
- riceOryza sativae7
- Material
- JW-type cytoplasmic hybrid rice combinatione7
- Treatment
- nitrogen deficiencye7
- Outcome
- material output and conversion ratee7
- Direction
- significantly highere7
- Comparator
- other cytoplasmic combinationse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e7“Under nitrogen deficiency conditions, the material output and conversion rate of the JW-type cytoplasmic hybrid rice combination was relatively high, significantly higher than those of other cytoplasmic combinations.”
Claim · model-written summary
Under medium nitrogen, the W-type hybrid rice combination had significantly higher material output and conversion rate than other cytoplasmic combinations.
- Taxon
- riceOryza sativae7
- Material
- W-type hybrid rice combinatione7
- Treatment
- medium nitrogen conditionse7
- Outcome
- material output and conversion ratee7
- Direction
- significantly highere7
- Comparator
- other cytoplasmic combinationse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Cytoplasmic Sterility on Roots and Yield of Nitrogen Sources in Rice”
e7“Under medium nitrogen conditions, the material output and conversion rate of the (N2) W-type hybrid rice combination were significantly higher than those of the other cytoplasmic combinations.”
Claim · model-written summary
Rice yield first increased with the nitrogen application rate.
Verbatim
e0“The yield of JW-type rice first increased and then decreased with the increase in the nitrogen application rate and was highest, 8195.55 kg/hm2, under the N2 treatment.”
Claim · model-written summary
Rice yield then decreased as the nitrogen application rate increased further.
Verbatim
e0“The yield of JW-type rice first increased and then decreased with the increase in the nitrogen application rate and was highest, 8195.55 kg/hm2, under the N2 treatment.”
Claim · model-written summary
The JW-type rice yield was highest, 8195.55 kg/hm2, under the N2 treatment.
Verbatim
e0“The yield of JW-type rice first increased and then decreased with the increase in the nitrogen application rate and was highest, 8195.55 kg/hm2, under the N2 treatment.”
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