Abstract
© 2015, University of Agriculture. All right reserved. Zinc biofort ification of cereal grains is suggested for controlling widespread human Zn deficiency in developing countries. In present field trail, various Zn treatments [control, priming of seeds in 0.5% (w/v) Zn solution (seed priming), dipping of roots in 0.5% (w/v) Zn solution (root dipping), application of 20 kg Zn ha −1 (soil application), sprays of 0.25% (w/v) Zn each at tillering and heading stages (foliar application) and combination of soil + foliar Zn applications] were applied as ZnSO4·7H2 O to rice grown under submerged conditions on a Zn deficient calcareous soil. Treat ments significantly (P≤0.05) increased grain and straw yield; however, seed priming and root dipping increased paddy yield only by ≤5%. Increased grain weight also significantly increased grain phytate content. Whole grain Zn concentration increased from 22 (at control) to 29 mg kg −1 (at soil + foliar application).Zinc applications methods, especially soil + foliar applicat ion, decreased grain [phytate]:[Zn] rat io and increased estimated human Zn bioavailability in grains based on trivariate model of Zn absorption. Conclusively, soil + foliar Zn application is suitable for opti mum paddy yield and agronomic Zn biofortification of rice grains. However, a limited increase in grain Zn concentration (7 mg kg −1) by Zn application suggested exploitation of molecular and genetic approaches in Zn biofortification programs.
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Claims 9
Claim · model-written summary
Zn application treatments significantly increased rice grain and straw yield.
- Taxon
- rice
Oryza sativat0 - Treatment
- Zn treatmentse0
- Outcome
- grain and straw yielde1
- Direction
- increasede1
- Comparator
- controle0
- Setting
- field traile0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In present field trail, various Zn treatments [control”
e1“Treat ments significantly (P≤0.05) increased grain and straw yield”
t0“grains of rice grown on a calcareous soil”
Claim · model-written summary
Seed priming and root dipping with Zn increased rice paddy yield by no more than 5%.
- Taxon
- riceOryza sativat0
- Treatment
- seed priming and root dippinge1
- Outcome
- paddy yielde1
- Direction
- increasede1
- Value
- ≤5%e1
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In present field trail, various Zn treatments [control”
e1“seed priming and root dipping increased paddy yield only by ≤5%”
t0“grains of rice grown on a calcareous soil”
Claim · model-written summary
Increased grain weight was associated with significantly increased grain phytate content in rice.
- Taxon
- riceOryza sativat0
- Organ / stage
- graine0
- Outcome
- grain phytate contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased grain weight also significantly increased grain phytate content”
t0“grains of rice grown on a calcareous soil”
Claim · model-written summary
Whole grain Zn concentration of rice increased from 22 (control) to 29 mg/kg under soil plus foliar Zn application.
- Taxon
- riceOryza sativat0
- Organ / stage
- graine0
- Treatment
- soil + foliar applicatione0
- Outcome
- Whole grain Zn concentratione0
- Direction
- increasede0
- Value
- 29 mg kg −1e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whole grain Zn concentration increased from 22 (at control) to 29 mg kg −1 (at soil + foliar application)”
t0“grains of rice grown on a calcareous soil”
Claim · model-written summary
Zn application methods, especially soil plus foliar application, decreased the grain phytate to zinc ratio in rice.
- Taxon
- riceOryza sativat0
- Organ / stage
- graine0
- Treatment
- soil + foliar applicatione0
- Outcome
- grain [phytate]:[Zn] ratioe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc applications methods, especially soil + foliar applicat ion, decreased grain [phytate]:[Zn] rat io”
t0“grains of rice grown on a calcareous soil”
Claim · model-written summary
Zn application methods increased estimated human Zn bioavailability in rice grains based on a trivariate model of Zn absorption.
- Taxon
- riceOryza sativat0
- Organ / stage
- grainse0
- Treatment
- soil + foliar applicatione0
- Outcome
- estimated human Zn bioavailabilitye0
- Direction
- increasede0
- Qualifier
- trivariate model of Zn absorptione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc applications methods, especially soil + foliar applicat ion, decreased grain [phytate]:[Zn] rat io and increased estimated human Zn bioavailability in grains based on trivariate model of Zn absorption”
t0“grains of rice grown on a calcareous soil”
Claim · model-written summary
Soil plus foliar Zn application is suitable for optimum paddy yield and agronomic Zn biofortification of rice grains.
- Taxon
- riceOryza sativae0
- Outcome
- soil + foliar Zn applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conclusively, soil + foliar Zn application is suitable for opti mum paddy yield and agronomic Zn biofortification of rice grains”
Claim · model-written summary
Zn application gave only a limited increase of 7 mg/kg in grain Zn concentration of rice.
- Taxon
- riceOryza sativat0
- Organ / stage
- graine0
- Treatment
- Zn applicatione0
- Outcome
- grain Zn concentratione0
- Direction
- increasee0
- Value
- 7 mg kg −1e0
- Qualifier
- limitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a limited increase in grain Zn concentration (7 mg kg −1) by Zn application”
t0“grains of rice grown on a calcareous soil”
Claim · model-written summary
Molecular and genetic approaches should be exploited in Zn biofortification programs for rice.
- Taxon
- riceOryza sativat0
- Outcome
- molecular and genetic approaches in Zn biofortification programse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggested exploitation of molecular and genetic approaches in Zn biofortification programs”
t0“grains of rice grown on a calcareous soil”
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