Abstract
Three rice varieties and several F3 lines with high and low cold tolerance, selected from F3 segregation lines of two crosses Milyang 23/Tong 88-7 and Milyang 23/TR22183 were used to analyze the effects of cold tolerance on the response of grain quality to cold water irrigation. The result showed that cold water irrigation led to the decrease of rice grain size. The length, length-width ratio and weight of brown rice grain were more sensitively affected by cold water irrigation than the width and thickness. The shape of brown rice grain was not significantly affected by the selection for cold tolerance at the seedling stage (CTS). The gel consistency, amylose content, peak viscosity, cool viscosity, breakdown viscosity and consistency viscosity were decreased, while alkali digestibility value and protein content were increased by cold water irrigation. Under normal irrigation condition the physicochemical properties of milled rice and viscogram components of milled rice flour were not significantly different between lines with high and low cold tolerance. Under cold water irrigation the amylose content, peak viscosity, hot viscosity, final viscosity of rice lines with high CTS or high cold tolerance at the booting stage (CTB) were higher, while the protein content, setback viscosity, breakdown ratio and setback ratio were lower, than those of rice lines with low cold tolerance. This implied that the cold water response of rice grain quality was less sensitive in the lines with high cold tolerance than in the lines with low cold tolerance, and the varietal improvement for cold tolerance would be important for grain quality improvement at the same time.
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Claims 9
Claim · model-written summary
Cold water irrigation decreased grain size.
- Taxon
- rice
Oryza sativae0 - Treatment
- cold water irrigatione0
- Outcome
- rice grain sizee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The result showed that cold water irrigation led to the decrease of rice grain size.”
Claim · model-written summary
Grain length, length-width ratio and weight were more sensitive to cold water than width and thickness.
- Taxon
- riceOryza sativae0
- Outcome
- length, length-width ratio and weight of brown rice graine0
- Direction
- more sensitively affectede0
- Comparator
- width and thicknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The length, length-width ratio and weight of brown rice grain were more sensitively affected by cold water irrigation than the width and thickness.”
Claim · model-written summary
Selection for cold tolerance at seedling stage did not significantly affect grain shape.
- Taxon
- riceOryza sativae0
- Treatment
- selection for cold tolerance at the seedling stage (CTS)e0
- Outcome
- shape of brown rice graine0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shape of brown rice grain was not significantly affected by the selection for cold tolerance at the seedling stage (CTS).”
Claim · model-written summary
Cold water irrigation decreased gel consistency, amylose content and peak viscosity.
- Taxon
- riceOryza sativat0
- Treatment
- cold water irrigatione0
- Outcome
- gel consistency, amylose content, peak viscositye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gel consistency, amylose content, peak viscosity, cool viscosity, breakdown viscosity and consistency viscosity were decreased, while alkali digestibility value and protein content were increased by cold water irrigation.”
t0“Rice”
Claim · model-written summary
Cold water irrigation decreased cool, breakdown and consistency viscosity.
- Taxon
- riceOryza sativat0
- Treatment
- cold water irrigatione0
- Outcome
- cool viscosity, breakdown viscosity and consistency viscositye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gel consistency, amylose content, peak viscosity, cool viscosity, breakdown viscosity and consistency viscosity were decreased, while alkali digestibility value and protein content were increased by cold water irrigation.”
t0“Rice”
Claim · model-written summary
Cold water irrigation increased alkali digestibility and protein content.
- Taxon
- riceOryza sativat0
- Treatment
- cold water irrigatione0
- Outcome
- alkali digestibility value and protein contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alkali digestibility value and protein content were increased by cold water irrigation.”
t0“Rice”
Claim · model-written summary
Under normal irrigation, grain physicochemical properties did not differ significantly between high and low tolerance lines.
- Taxon
- riceOryza sativae0
- Material
- lines with high and low cold tolerancee0
- Outcome
- physicochemical properties of milled rice and viscogram components of milled rice floure0
- Direction
- not significantly differente0
- Setting
- normal irrigation conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under normal irrigation condition the physicochemical properties of milled rice and viscogram components of milled rice flour were not significantly different between lines with high and low cold tolerance.”
Claim · model-written summary
Under cold irrigation, high tolerance lines had higher amylose content, peak, hot and final viscosity.
- Taxon
- riceOryza sativae0
- Material
- rice lines with high CTS or high cold tolerance at the booting stage (CTB)e0
- Outcome
- amylose content, peak viscosity, hot viscosity, final viscositye0
- Direction
- highere0
- Comparator
- rice lines with low cold tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under cold water irrigation the amylose content, peak viscosity, hot viscosity, final viscosity of rice lines with high CTS or high cold tolerance at the booting stage (CTB) were higher, while the protein content, setback viscosity, breakdown ratio and setback ratio were lower, than those of rice lines with low cold tolerance.”
Claim · model-written summary
Under cold irrigation, high tolerance lines had lower protein content, setback viscosity, breakdown and setback ratios.
- Taxon
- riceOryza sativae0
- Material
- rice lines with high CTS or high cold tolerance at the booting stage (CTB)e0
- Outcome
- protein content, setback viscosity, breakdown ratio and setback ratioe0
- Direction
- lowere0
- Comparator
- rice lines with low cold tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under cold water irrigation the amylose content, peak viscosity, hot viscosity, final viscosity of rice lines with high CTS or high cold tolerance at the booting stage (CTB) were higher, while the protein content, setback viscosity, breakdown ratio and setback ratio were lower, than those of rice lines with low cold tolerance.”
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