Abstract
Characteristics of chlorophyll fluorescence and antioxidative system were investigated in rice (Oryza sativa L.) super-hybrid Liangyoupeijiu (LYPJ), maternal cultivar Peiai64s, and paternal cultivar indica rice 9311 under chilling stress. During 6-d chilling treatment, chlorophyll content of all three genotypes was gradually declined. However, the decrease in photosystem 2 (PS 2) maximum photochemical efficiency (Fv/Fm) and quantum yield of PS 2 (ΦPS2) was less expressive in LYPJ than in parental cultivars The electrolyte leakage and malondialdehyde content in all cultivars increased after chilling treatment, but LYPJ exhibited the least increasing tendency. Activities of superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR) were higher in LYPJ than in parental cultivars. The results demonstrated that tolerance to chilling stress in LYPJ might be adopted mostly from its maternal cultivar.
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Claims 7
Claim · model-written summary
Chilling progressively reduced chlorophyll content in all three rice genotypes.
- Taxon
- rice
Oryza sativat0 - Treatment
- 6-d chilling treatmente0
- Outcome
- chlorophyll contente0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During 6-d chilling treatment, chlorophyll content of all three genotypes was gradually declined”
t0“rice”
Claim · model-written summary
Chilling reduced Fv/Fm less in LYPJ than in parental cultivars.
- Taxon
- riceOryza sativat0
- Material
- LYPJe0
- Outcome
- photosystem 2 (PS 2) maximum photochemical efficiency (Fv/Fm)e0
- Direction
- decreasee0
- Comparator
- parental cultivarse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease in photosystem 2 (PS 2) maximum photochemical efficiency (Fv/Fm) and quantum yield of PS 2 (ΦPS2) was less expressive in LYPJ than in parental cultivars”
t0“rice”
Claim · model-written summary
Chilling reduced quantum yield of PS2 less in LYPJ than in parental cultivars.
- Taxon
- riceOryza sativat0
- Material
- LYPJe0
- Outcome
- quantum yield of PS 2 (ΦPS2)e0
- Direction
- decreasee0
- Comparator
- parental cultivarse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease in photosystem 2 (PS 2) maximum photochemical efficiency (Fv/Fm) and quantum yield of PS 2 (ΦPS2) was less expressive in LYPJ than in parental cultivars”
t0“rice”
Claim · model-written summary
Chilling increased electrolyte leakage in all cultivars, least in LYPJ.
- Taxon
- riceOryza sativat0
- Material
- LYPJe0
- Treatment
- chilling treatmente0
- Outcome
- electrolyte leakagee0
- Direction
- increasede0
- Comparator
- all cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The electrolyte leakage and malondialdehyde content in all cultivars increased after chilling treatment, but LYPJ exhibited the least increasing tendency”
t0“rice”
Claim · model-written summary
Chilling increased malondialdehyde content in all cultivars, least in LYPJ.
- Taxon
- riceOryza sativat0
- Material
- LYPJe0
- Treatment
- chilling treatmente0
- Outcome
- malondialdehyde contente0
- Direction
- increasede0
- Comparator
- all cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The electrolyte leakage and malondialdehyde content in all cultivars increased after chilling treatment, but LYPJ exhibited the least increasing tendency”
t0“rice”
Claim · model-written summary
LYPJ had higher SOD, APX and GR activity than parental cultivars.
- Taxon
- riceOryza sativat0
- Material
- LYPJe0
- Outcome
- Activities of superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR)e0
- Direction
- highere0
- Comparator
- parental cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activities of superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR) were higher in LYPJ than in parental cultivars”
t0“rice”
Claim · model-written summary
Authors infer LYPJ chilling tolerance was mostly adopted from maternal cultivar.
- Taxon
- riceOryza sativat0
- Material
- LYPJe0
- Outcome
- tolerance to chilling stresse0
- Qualifier
- might be adopted mostly from its maternal cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tolerance to chilling stress in LYPJ might be adopted mostly from its maternal cultivar”
t0“rice”
The same questions in other papers
cold · physiology: pigments · Oryza sativa (rice)Positive and negative results
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- positive
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See all 12 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.