Abstract
An F 1 hybrid rice combination from a cross between a thermo-sensitive genic male sterility (TGMS) '103S' line and an upland rice 'IR17525' were investigated for physiological response traits under drought stress and recovery at the heading time by comparing with its parents. The F 1 and parental plants were planted in pots in a net house at different times for synchronizing flowering. At the stage of 5-3 days before heading, water was withdrawn from the pot. When the soil water potential in the pot reached -60 kPa, photosynthetic rate and dry matter accumulation were measured. Recovery traits including photosynthetic rate and dry weight of panicle were measured at 5 days interval until harvesting. The results showed that the photosynthetic rate was lower in the F 1 hybrid than that in the parents during drought treatment, in contrary it was higher during recovery stage. The grain yield was maintained in the F 1 hybrid under drought treatment as much as under the control condition, whereas it significantly reduced as drought treatment in the male parent. The grain yield was higher in the F 1 hybrid than that in the male parent under the wellirrigated condition, and even much higher under drought treatment. It is suggested that such advantageous characters, including the shorter ripening duration, the longer panicle exertion, the higher recovery photosynthetic rate as well as the faster of dry matter translocation into panicle at the ripening stage, contribute drought tolerance in rice. Thus, the F 1 hybrid rice 103S/IR17525 would be a promising rice with high yield potential under drought stress.
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Claims 10
Claim · model-written summary
Hybrid rice photosynthetic rate was lower than the parents during drought.
- Taxon
- rice
Oryza sativat0 - Material
- F 1 hybride0
- Treatment
- drought treatmente0
- Outcome
- photosynthetic ratee0
- Direction
- lowere0
- Comparator
- parentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate was lower in the F 1 hybrid than that in the parents during drought treatment”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
Hybrid rice photosynthetic rate was higher than the parents during recovery.
- Taxon
- riceOryza sativat0
- Material
- F 1 hybride1
- Organ / stage
- recovery stagee0
- Outcome
- photosynthetic ratee1
- Direction
- highere0
- Comparator
- parentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was higher during recovery stage”
e1“the photosynthetic rate was lower in the F 1 hybrid than that in the parents during drought treatment”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
Hybrid rice grain yield was maintained under drought relative to control.
- Taxon
- riceOryza sativat0
- Material
- F 1 hybride0
- Treatment
- drought treatmente0
- Outcome
- grain yielde0
- Direction
- maintainede0
- Comparator
- control conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield was maintained in the F 1 hybrid under drought treatment as much as under the control condition”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
Male parent grain yield significantly declined under drought.
- Taxon
- riceOryza sativat0
- Material
- male parente0
- Treatment
- drought treatmente0
- Outcome
- grain yielde1
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it significantly reduced as drought treatment in the male parent”
e1“The grain yield was maintained in the F 1 hybrid”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
Hybrid grain yield exceeded male parent yield under well irrigated conditions.
- Taxon
- riceOryza sativat0
- Material
- F 1 hybride0
- Outcome
- grain yielde0
- Direction
- highere0
- Qualifier
- wellirrigated conditione0
- Comparator
- male parente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield was higher in the F 1 hybrid than that in the male parent under the wellirrigated condition”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
Hybrid grain yield was much higher than male parent yield under drought.
- Taxon
- riceOryza sativat0
- Material
- F 1 hybride0
- Outcome
- grain yielde0
- Direction
- much highere0
- Qualifier
- drought treatmente0
- Comparator
- male parente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield was higher in the F 1 hybrid than that in the male parent under the wellirrigated condition, and even much higher under drought treatment”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
The hybrid was characterized by shorter ripening duration.
- Taxon
- riceOryza sativat0
- Outcome
- ripening duratione0
- Direction
- shortere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the shorter ripening duration, the longer panicle exertion, the higher recovery photosynthetic rate as well as the faster of dry matter translocation into panicle”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
The hybrid had longer panicle exertion.
- Taxon
- riceOryza sativat0
- Outcome
- panicle exertione0
- Direction
- longere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the shorter ripening duration, the longer panicle exertion, the higher recovery photosynthetic rate as well as the faster of dry matter translocation into panicle”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
The hybrid had faster dry matter translocation into panicle during ripening.
- Taxon
- riceOryza sativat0
- Organ / stage
- paniclee0
- Outcome
- dry matter translocation into paniclee0
- Direction
- fastere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the faster of dry matter translocation into panicle at the ripening stage”
t0“hybrid rice (Oryza sativa L.)”
Claim · model-written summary
The authors suggest the hybrid has high yield potential under drought.
- Taxon
- riceOryza sativae0
- Material
- 103S/IR17525e0
- Outcome
- high yield potential under drought stresse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the F 1 hybrid rice 103S/IR17525 would be a promising rice with high yield potential under drought stress.”
The same questions in other papers
drought · yield · Oryza sativa (rice)Positive and negative results
75 papers in the same direction as this paper · 246 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- negative
321 papers more in this group
See all 325 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.