Abstract
The objective of this work was to evaluate Zn use efficiency by upland rice genotypes. The experiment was carried out in a greenhouse, with ten upland rice genotypes grown on an Oxisol (Typic Hapludox) with no application, and with application of 10 mg kg-1 Zn, applied as zinc sulfate. Shoot dry weight, grain yield, Zn harvest index, Zn concentration in shoot and in grain were significantly influenced by soil Zn levels and genotypes. However, panicle number and grain harvest index were significantly affected only by genotype. Genotypes CNA8557, CNA8540 and IR42 produced higher grain yield than other genotypes. Genotypes showed significant variability in Zn recovery efficiency. On average, 13% of the applied Zn was recovered by upland rice genotypes. Genotypes with high Zn recovery efficiency could be used in breeding of Zn efficient upland rice cultivars. Higher level of soil Zn (10 mg kg-1) increased significantly the concentrations of plant Cu and Mn. However, Fe concentrations in plant (shoot and grain) were not influenced by soil Zn levels.
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Claims 11
Claim · model-written summary
Soil zinc and genotype significantly influenced shoot dry weight, grain yield and zinc harvest index.
- Taxon
- upland rice
Oryza sativat0 - Treatment
- soil Zn levelse0
- Outcome
- Shoot dry weight, grain yield, Zn harvest indexe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot dry weight, grain yield, Zn harvest index, Zn concentration in shoot and in grain were significantly influenced by soil Zn levels and genotypes”
t0“upland rice genotypes”
Claim · model-written summary
Soil zinc and genotype significantly influenced zinc concentration in shoots and grain.
- Taxon
- upland riceOryza sativat0
- Treatment
- soil Zn levelse0
- Outcome
- Zn concentration in shoot and in graine0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn concentration in shoot and in grain were significantly influenced by soil Zn levels and genotypes”
t0“upland rice genotypes”
Claim · model-written summary
Genotype alone significantly affected panicle number and grain harvest index.
- Taxon
- upland riceOryza sativat0
- Material
- genotypee0
- Outcome
- panicle number and grain harvest indexe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panicle number and grain harvest index were significantly affected only by genotype”
t0“upland rice genotypes”
Claim · model-written summary
CNA8557 yielded more grain than other genotypes.
- Taxon
- upland riceOryza sativat0
- Material
- CNA8557e0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypes CNA8557, CNA8540 and IR42 produced higher grain yield than other genotypes”
t0“upland rice genotypes”
Claim · model-written summary
CNA8540 yielded more grain than other genotypes.
- Taxon
- upland riceOryza sativat0
- Material
- CNA8540e0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypes CNA8557, CNA8540 and IR42 produced higher grain yield than other genotypes”
t0“upland rice genotypes”
Claim · model-written summary
IR42 yielded more grain than other genotypes.
- Taxon
- upland riceOryza sativat0
- Material
- IR42e0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypes CNA8557, CNA8540 and IR42 produced higher grain yield than other genotypes”
t0“upland rice genotypes”
Claim · model-written summary
Genotypes varied significantly in zinc recovery efficiency.
- Taxon
- upland riceOryza sativat0
- Outcome
- Zn recovery efficiencye0
- Direction
- variabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypes showed significant variability in Zn recovery efficiency”
t0“upland rice genotypes”
Claim · model-written summary
Upland rice genotypes recovered an average of 13% of applied zinc.
- Taxon
- upland riceOryza sativae0
- Outcome
- applied Zn was recoverede0
- Value
- 13%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On average, 13% of the applied Zn was recovered by upland rice genotypes”
Claim · model-written summary
Genotypes with high zinc recovery efficiency could be used to breed zinc-efficient upland rice.
- Taxon
- upland riceOryza sativae0
- Outcome
- could be used in breeding of Zn efficient upland rice cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypes with high Zn recovery efficiency could be used in breeding of Zn efficient upland rice cultivars”
Claim · model-written summary
Higher soil zinc significantly increased plant copper and manganese concentrations.
- Taxon
- upland riceOryza sativat0
- Treatment
- soil Zn (10 mg kg-1)e0
- Outcome
- concentrations of plant Cu and Mne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher level of soil Zn (10 mg kg-1) increased significantly the concentrations of plant Cu and Mn”
t0“upland rice genotypes”
Claim · model-written summary
Soil zinc did not influence plant iron concentrations in shoot or grain.
- Taxon
- upland riceOryza sativat0
- Treatment
- soil Zn levelse0
- Outcome
- Fe concentrations in plant (shoot and grain)e0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fe concentrations in plant (shoot and grain) were not influenced by soil Zn levels”
t0“upland rice genotypes”
The same questions in other papers
zinc atom · nutrient: content · Oryza sativa (rice)Results differ
21 papers in the same direction as this paper · 254 in the opposite direction
- positive
- positive
- positive
272 papers more in this group
See all 276 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.