Abstract
Alternate wetting and moderate soil drying irrigation (WMD) has been widely adopted in rice ( Oryza sativa L.) production for saving irrigation water and increasing grain yield. However, limited information is available about the effect of WMD on rice grain quality. The main purpose of this study was to evaluate the characteristics of grain quality in response to WMD. Two rice varieties, Yangdao 6 (YD6, indica ) and Hanyou 8 (HY8, japonica ), were grown in the field, with two water management treatments, well‐watered (WW) and WMD from 10 d after transplanting to maturity. In comparison with WW, WMD prominently increased grain yield by 7.57 to 9.72%, and improved some grain quality parameters such as milling, appearance, and eating and cooking qualities, including increases in head rice and decreases in chalkiness. The two varieties showed the same tendency. However, WMD had a negative impact on some nutritional quality traits in rice grains, such as reduction in the contents of amino acids and the micronutrient elements Cu, Fe, Mn, Mo, Se, and Zn. The WMD treatment also markedly decreased As content and exhibited no significant effect on Cd content in grains. The results demonstrated that WMD has an overall impact on rice grain quality with both positive and negative effects.
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Claims 12
Claim · model-written summary
WMD increased rice grain yield by 7.57 to 9.72% versus well-watered irrigation.
- Taxon
- Rice
Oryza sativat0 - Treatment
- WMDe0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 7.57 to 9.72%e0
- Comparator
- WWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with WW, WMD prominently increased grain yield by 7.57 to 9.72%”
t0“Rice”
Claim · model-written summary
WMD improved milling quality versus well-watered irrigation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with WW, WMD prominently increased grain yield by 7.57 to 9.72%, and improved some grain quality parameters such as milling, appearance, and eating and cooking qualities”
t0“Rice”
Claim · model-written summary
WMD improved rice appearance quality versus well-watered irrigation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with WW, WMD prominently increased grain yield by 7.57 to 9.72%, and improved some grain quality parameters such as milling, appearance, and eating and cooking qualities”
t0“Rice”
Claim · model-written summary
WMD improved eating and cooking qualities versus well-watered irrigation.
- Taxon
- RiceOryza sativat0
- Treatment
- WMDe0
- Outcome
- eating and cooking qualitiese0
- Direction
- improvede0
- Comparator
- WWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison with WW, WMD prominently increased grain yield by 7.57 to 9.72%, and improved some grain quality parameters such as milling, appearance, and eating and cooking qualities”
t0“Rice”
Claim · model-written summary
WMD increased head rice versus well-watered irrigation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“including increases in head rice and decreases in chalkiness”
e1“In comparison with WW, WMD”
t0“Rice”
Claim · model-written summary
WMD reduced chalkiness versus well-watered irrigation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“including increases in head rice and decreases in chalkiness”
e1“In comparison with WW, WMD”
t0“Rice”
Claim · model-written summary
Both rice varieties showed the same WMD response tendency.
- Taxon
- riceOryza sativae1
- Material
- Yangdao 6e1
- Outcome
- same tendencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two varieties showed the same tendency”
e1“Two rice varieties, Yangdao 6 (YD6, indica ) and Hanyou 8 (HY8, japonica )”
Claim · model-written summary
WMD reduced amino acid contents in rice grain.
- Taxon
- riceOryza sativae0
- Organ / stage
- rice grainse0
- Treatment
- WMDe0
- Outcome
- contents of amino acidse0
- Direction
- reductione0
- Comparator
- WWe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WMD had a negative impact on some nutritional quality traits in rice grains, such as reduction in the contents of amino acids”
e1“well‐watered (WW) and WMD”
Claim · model-written summary
WMD reduced Cu, Fe and Mn contents in rice grain.
- Taxon
- riceOryza sativae1
- Treatment
- WMDe1
- Outcome
- micronutrient elements Cu, Fe, Mne0
- Direction
- reductione0
- Comparator
- WWe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction in the contents of amino acids and the micronutrient elements Cu, Fe, Mn, Mo, Se, and Zn”
e1“WMD had a negative impact on some nutritional quality traits in rice grains”
e2“well‐watered (WW) and WMD”
Claim · model-written summary
WMD reduced Mo, Se and Zn contents in rice grain.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction in the contents of amino acids and the micronutrient elements Cu, Fe, Mn, Mo, Se, and Zn”
e1“WMD had a negative impact on some nutritional quality traits in rice grains”
e2“well‐watered (WW) and WMD”
Claim · model-written summary
WMD decreased As content in rice grain.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The WMD treatment also markedly decreased As content”
e1“well‐watered (WW) and WMD”
e2“rice grains”
Claim · model-written summary
WMD had no significant effect on Cd content in rice grain.
- Taxon
- RiceOryza sativat0
- Treatment
- WMDe1
- Outcome
- Cd content in grainse0
- Direction
- no significant effecte0
- Comparator
- WWe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exhibited no significant effect on Cd content in grains”
e1“The WMD treatment”
e2“well‐watered (WW) and WMD”
t0“Rice”
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