Abstract
Among the abiotic stresses, drought is the major factor for heavy yield losses in rice production. The present study was undertaken with an aim of understanding the effect of mega QTLs of Apo controlling yield under drought. The BILs viz., CB 229 and CB 193-3 were evaluated for their drought responses under green house conditions along with the parents Apo, IR64 and check Norungan during Summer 2015, Kharif 2015, Rabi 2015-16. The results from this study reported that, Apo and BILs had higher photosynthetic rate when compared to IR64 under drought. CB 229 had low reduction per cent of photosynthesis (45.25%), Ci/Ca (23.88%), conductance (52.38%) and RWC (25.72%) compared to susceptible parent IR64. Number of filled grains was much higher in Apo, CB229 and CB 193-3 when compared to IR64 under stress condition. The significant reduction in single plant yield under moisture stress condition was observed in all the genotypes especially in IR64 (65.15%). Reduction was relatively less in the donor Apo and BILs. CB 229 showed a greater RWC, conductance, moderate transpiration rate, increased water uptake, a higher assimilation rate and a higher grain yield under the moisture stress condition compared to the other BIL and IR64. It was found that CB 229 with three QTL, i.e., qDTY2.2, qDTY3.1 and qDTY8.1, showed better performance than CB 193-3 with two QTL, qDTY3.1 and qDTY8.1, under severe stress while in irrigated condition CB 229 was onpar with IR64.
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Claims 16
Claim · model-written summary
Apo and backcross lines had higher photosynthetic rate than IR64 under drought.
- Taxon
- Rice (Oryza sativa L.)
Oryza sativat0 - Material
- Apo and BILse0
- Treatment
- droughte0
- Outcome
- photosynthetic ratee0
- Direction
- highere0
- Comparator
- IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“Apo and BILs had higher photosynthetic rate when compared to IR64 under drought.”
Claim · model-written summary
CB 229 had 45.25% photosynthesis reduction, less than IR64.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Outcome
- photosynthesise0
- Direction
- low reductione0
- Value
- 45.25%e0
- Comparator
- IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 had low reduction per cent of photosynthesis (45.25%), Ci/Ca (23.88%), conductance (52.38%) and RWC (25.72%) compared to susceptible parent IR64.”
Claim · model-written summary
CB 229 had 23.88% Ci/Ca reduction, less than IR64.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Outcome
- Ci/Cae0
- Direction
- low reductione0
- Value
- 23.88%e0
- Comparator
- IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 had low reduction per cent of photosynthesis (45.25%), Ci/Ca (23.88%), conductance (52.38%) and RWC (25.72%) compared to susceptible parent IR64.”
Claim · model-written summary
CB 229 had 52.38% conductance reduction, less than IR64.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Outcome
- conductancee0
- Direction
- low reductione0
- Value
- 52.38%e0
- Comparator
- IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 had low reduction per cent of photosynthesis (45.25%), Ci/Ca (23.88%), conductance (52.38%) and RWC (25.72%) compared to susceptible parent IR64.”
Claim · model-written summary
CB 229 had 25.72% RWC reduction, less than IR64.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Outcome
- RWCe0
- Direction
- low reductione0
- Value
- 25.72%e0
- Comparator
- IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 had low reduction per cent of photosynthesis (45.25%), Ci/Ca (23.88%), conductance (52.38%) and RWC (25.72%) compared to susceptible parent IR64.”
Claim · model-written summary
Apo, CB229 and CB 193-3 had more filled grains than IR64 under stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Apo, CB229 and CB 193-3e0
- Treatment
- stress conditione0
- Outcome
- Number of filled grainse0
- Direction
- much highere0
- Comparator
- IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“Number of filled grains was much higher in Apo, CB229 and CB 193-3 when compared to IR64 under stress condition.”
Claim · model-written summary
Moisture stress significantly reduced single plant yield in all genotypes.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- all the genotypese0
- Treatment
- moisture stress conditione0
- Outcome
- single plant yielde0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“The significant reduction in single plant yield under moisture stress condition was observed in all the genotypes especially in IR64 (65.15%).”
Claim · model-written summary
IR64 single plant yield fell by 65.15% under moisture stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- IR64e0
- Treatment
- moisture stress conditione0
- Outcome
- single plant yielde0
- Direction
- reductione0
- Value
- 65.15%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“The significant reduction in single plant yield under moisture stress condition was observed in all the genotypes especially in IR64 (65.15%).”
Claim · model-written summary
Yield reduction under stress was smaller in Apo and the backcross lines.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Apo and BILse0
- Outcome
- Reductione0
- Direction
- relatively lesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“Reduction was relatively less in the donor Apo and BILs.”
Claim · model-written summary
CB 229 had greater RWC and conductance than CB 193-3 and IR64 under moisture stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Treatment
- moisture stress conditione0
- Outcome
- RWC, conductancee0
- Direction
- greatere0
- Comparator
- the other BIL and IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 showed a greater RWC, conductance, moderate transpiration rate, increased water uptake, a higher assimilation rate and a higher grain yield under the moisture stress condition compared to the other BIL and IR64.”
Claim · model-written summary
CB 229 had a moderate transpiration rate under moisture stress relative to the other BIL and IR64.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Treatment
- moisture stress conditione0
- Outcome
- transpiration ratee0
- Direction
- moderatee0
- Comparator
- the other BIL and IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 showed a greater RWC, conductance, moderate transpiration rate, increased water uptake, a higher assimilation rate and a higher grain yield under the moisture stress condition compared to the other BIL and IR64.”
Claim · model-written summary
CB 229 had increased water uptake under moisture stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Treatment
- moisture stress conditione0
- Outcome
- water uptakee0
- Direction
- increasede0
- Comparator
- the other BIL and IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 showed a greater RWC, conductance, moderate transpiration rate, increased water uptake, a higher assimilation rate and a higher grain yield under the moisture stress condition compared to the other BIL and IR64.”
Claim · model-written summary
CB 229 had a higher assimilation rate under moisture stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Treatment
- moisture stress conditione0
- Outcome
- assimilation ratee0
- Direction
- highere0
- Comparator
- the other BIL and IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 showed a greater RWC, conductance, moderate transpiration rate, increased water uptake, a higher assimilation rate and a higher grain yield under the moisture stress condition compared to the other BIL and IR64.”
Claim · model-written summary
CB 229 had a higher grain yield under moisture stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Treatment
- moisture stress conditione0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- the other BIL and IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 showed a greater RWC, conductance, moderate transpiration rate, increased water uptake, a higher assimilation rate and a higher grain yield under the moisture stress condition compared to the other BIL and IR64.”
Claim · model-written summary
CB 229 with three QTL performed better than CB 193-3 with two QTL under severe stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Treatment
- severe stresse0
- Gene
- qDTY2.2, qDTY3.1 and qDTY8.1e0
- Outcome
- performancee0
- Direction
- bettere0
- Comparator
- CB 193-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“CB 229 with three QTL, i.e., qDTY2.2, qDTY3.1 and qDTY8.1, showed better performance than CB 193-3 with two QTL, qDTY3.1 and qDTY8.1, under severe stress”
Claim · model-written summary
CB 229 performed on par with IR64 under irrigation.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- CB 229e0
- Treatment
- irrigated conditione0
- Outcome
- onpare0
- Direction
- onpare0
- Comparator
- IR64e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e0“while in irrigated condition CB 229 was onpar with IR64.”
The same questions in other papers
drought · yield · Oryza sativa (rice)Positive and negative results
248 papers in the same direction as this paper · 76 in the opposite direction
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