Abstract
Zinc deficiency is a common constraint for wheat production in the regions with limited precipitation, particularly in the regions with high levels of available phosphate (P) in soil. Two experiments were conducted using chelator-buffered nutrient solutions to characterize differences in tolerance to Zn deficiency among three winter wheat (Triticum aestivum L.) genotypes and to investigate the relationship between P and Zn nutrition in wheat species. Four indices, Zn efficiency, relative shoot-to-root ratio, total Zn uptake in shoot, and shoot dry weight were used to compare the tolerance to Zn deficiency among three wheat genotypes. The results indicated that the four indices could be used in breeding selection for Zn uptake-efficient genotypes. The genotype H6712 was the most tolerant to Zn deficient, followed by M19, and then X13. Specifically, H6712 had the highest Zn uptake efficiency among the three genotypes. The addition of P to the growth medium increased Zn uptake and translocation from roots to shoots. Total Zn content of the wheat plant was 43% higher with 0.6 mmol/L P treatment than that of control with 0 mmol /L P treatment. The Zn translocation ratios from roots to shoots were increased by 16% and 26% with 0.6 mmol/L P treatment and 3 mmol/L P treatment, respectively, compared with 0 mmol/L P treatment. In contrast, high Zn concentrations in the growth medium inhibited P translocation from roots to shoots, but the inhibitive effects were not strong. Sixty-six percent of P taken up by wheat plants was translocated to the wheat shoots at 0 μmol/L Zn treatment, while the percent was 60% at 3 μmol/L Zn treatment. The result may be due to the fact that the wheat plants need more P than Zn.
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Claims 9
Claim · model-written summary
Four zinc-related indices could be used to select zinc uptake efficient wheat genotypes.
Verbatim
e0“The results indicated that the four indices could be used in breeding selection for Zn uptake-efficient genotypes.”
Claim · model-written summary
H6712 was most tolerant of zinc deficiency, followed by M19 and X13.
Verbatim
e0“The genotype H6712 was the most tolerant to Zn deficient, followed by M19, and then X13.”
Claim · model-written summary
H6712 had the highest zinc uptake efficiency among three genotypes.
Verbatim
e0“Specifically, H6712 had the highest Zn uptake efficiency among the three genotypes.”
Claim · model-written summary
Phosphorus addition increased wheat zinc uptake and root-to-shoot translocation.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- addition of P to the growth mediume0
- Outcome
- Zn uptake and translocation from roots to shootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of P to the growth medium increased Zn uptake and translocation from roots to shoots.”
t0“Tolerance to Zn deficiency and P-Zn interaction in wheat seedlings cultured in chelator-buffered solutions”
Claim · model-written summary
Wheat total zinc content was 43% higher with 0.6 mmol/L phosphorus than with no phosphorus.
- Taxon
- wheat plantTriticum aestivume0
- Treatment
- 0.6 mmol/L P treatmente0
- Outcome
- Total Zn contente0
- Direction
- highere0
- Value
- 43%e0
- Comparator
- control with 0 mmol /L P treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total Zn content of the wheat plant was 43% higher with 0.6 mmol/L P treatment than that of control with 0 mmol /L P treatment.”
Claim · model-written summary
The 0.6 mmol/L phosphorus treatment increased root-to-shoot zinc translocation ratio by 16% over no phosphorus.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 0.6 mmol/L P treatmente0
- Outcome
- Zn translocation ratios from roots to shootse0
- Direction
- increasede0
- Value
- 16%e0
- Comparator
- 0 mmol/L P treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Zn translocation ratios from roots to shoots were increased by 16% and 26% with 0.6 mmol/L P treatment and 3 mmol/L P treatment, respectively, compared with 0 mmol/L P treatment.”
t0“Tolerance to Zn deficiency and P-Zn interaction in wheat seedlings cultured in chelator-buffered solutions”
Claim · model-written summary
The 3 mmol/L phosphorus treatment increased root-to-shoot zinc translocation ratio by 26% over no phosphorus.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 3 mmol/L P treatmente0
- Outcome
- Zn translocation ratios from roots to shootse0
- Direction
- increasede0
- Value
- 26%e0
- Comparator
- 0 mmol/L P treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Zn translocation ratios from roots to shoots were increased by 16% and 26% with 0.6 mmol/L P treatment and 3 mmol/L P treatment, respectively, compared with 0 mmol/L P treatment.”
t0“Tolerance to Zn deficiency and P-Zn interaction in wheat seedlings cultured in chelator-buffered solutions”
Claim · model-written summary
High zinc in the medium weakly inhibited wheat phosphorus translocation from roots to shoots.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- high Zn concentrations in the growth mediume0
- Outcome
- P translocation from roots to shootse0
- Direction
- inhibitede0
- Qualifier
- inhibitive effects were not stronge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, high Zn concentrations in the growth medium inhibited P translocation from roots to shoots, but the inhibitive effects were not strong.”
t0“Tolerance to Zn deficiency and P-Zn interaction in wheat seedlings cultured in chelator-buffered solutions”
Claim · model-written summary
At zero zinc, 66% of absorbed phosphorus moved to wheat shoots, versus 60% at 3 μmol/L zinc.
- Taxon
- wheat plantsTriticum aestivume0
- Treatment
- 0 μmol/L Zn treatmente0
- Outcome
- P taken up by wheat plants was translocated to the wheat shootse0
- Value
- Sixty-six percente0
- Qualifier
- 60%e0
- Comparator
- 3 μmol/L Zn treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sixty-six percent of P taken up by wheat plants was translocated to the wheat shoots at 0 μmol/L Zn treatment, while the percent was 60% at 3 μmol/L Zn treatment.”
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