Abstract
Abstract Wheat ( Triticum aestivum L.) production areas have expanded to soils low in available Mn and to low pH soils with excess available Mn. The purpose of this study was to determine the effect of Mn deficiency and toxicity effects on ‘Stacy’ wheat growth components and to determine the Mn critical deficiency level (CDL) and critical toxicity level (CTL) in specific plant tissue in relation to top dry weight. The critical deficiency and toxicity values could be used as guidelines in tissue analysis to diagnose Mn deficiency and toxicity. Wheat plants were grown in nutrient solution containing 10 Mn rates from 0.09 μ M to 9.1 m M in the greenhouse. Plants were harvested 26 days following treatment with Mn and tissue samples were analyzed for Mn and other elements in the wet ashed extract. Manganese deficiency and toxicity reduced top dry weight, root dry weight, plant height, and tiller number compared with plants supplied at adequate Mn levels. The CDL and CTL defined as the elemental concentration in the tissue associated with a 10% reduction in growth due to a deficiency or toxicity, respectively, were determined from the relationship of Mn concentrations in the tissue and top dry weight. The Mn CDL values for blades 1, 2, 3, and stem of Stacy wheat were 13,39,82, and 12 μg g ‐1 , respectively. Blade 1 is recommended for tissue sampling since the transition zone in the response curve is narrow and blade 1 is metabolically active and the most recently matured blade with a developed ligule. The Mn CTL values of the sampled tissues were 380, 900, 1100, and 200 μg g ‐1 for blades 1, 2, 3, and stem tissue, respectively. Maximum growth would be expected when tissue Mn concentrations are within the CDL and CTL of a specific plant tissue. The Mn concentration in tissues increased as Mn supply was increased. A reciprocal Fe/Mn and P/Mn concentrations existed in blade 1. Manganese deficiency and toxicity reduced K, Ca, and Mg concentrations.
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Claims 13
Claim · model-written summary
Manganese deficiency reduced top dry weight, root dry weight and plant height in wheat compared with adequate Mn supply.
- Taxon
- Wheat ( Triticum aestivum L.)
Triticum aestivume0 - Treatment
- Manganese deficiencye1
- Outcome
- top dry weight, root dry weight, plant heighte1
- Direction
- reducede1
- Comparator
- plants supplied at adequate Mn levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Manganese deficiency and toxicity reduced top dry weight, root dry weight, plant height, and tiller number compared with plants supplied at adequate Mn levels”
Claim · model-written summary
Manganese deficiency reduced tiller number in wheat compared with adequate Mn supply.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Treatment
- Manganese deficiencye1
- Outcome
- tiller numbere1
- Direction
- reducede1
- Comparator
- plants supplied at adequate Mn levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Manganese deficiency and toxicity reduced top dry weight, root dry weight, plant height, and tiller number compared with plants supplied at adequate Mn levels”
Claim · model-written summary
Manganese toxicity reduced top dry weight, root dry weight and plant height in wheat compared with adequate Mn supply.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Treatment
- toxicitye1
- Outcome
- top dry weight, root dry weight, plant heighte1
- Direction
- reducede1
- Comparator
- plants supplied at adequate Mn levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Manganese deficiency and toxicity reduced top dry weight, root dry weight, plant height, and tiller number compared with plants supplied at adequate Mn levels”
Claim · model-written summary
Manganese toxicity reduced tiller number in wheat compared with adequate Mn supply.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Treatment
- toxicitye1
- Outcome
- tiller numbere1
- Direction
- reducede1
- Comparator
- plants supplied at adequate Mn levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Manganese deficiency and toxicity reduced top dry weight, root dry weight, plant height, and tiller number compared with plants supplied at adequate Mn levels”
Claim · model-written summary
The critical deficiency and toxicity values could guide tissue analysis to diagnose Mn deficiency and toxicity in wheat.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Outcome
- guidelines in tissue analysis to diagnose Mn deficiency and toxicitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“The critical deficiency and toxicity values could be used as guidelines in tissue analysis to diagnose Mn deficiency and toxicity”
Claim · model-written summary
Mn critical deficiency level values in Stacy wheat tissues are 13,39,82 and 12 μg g ‐1 for blades 1, 2, 3 and stem.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Material
- Stacye1
- Organ / stage
- blades 1, 2, 3, and steme1
- Outcome
- Mn CDL valuese1
- Value
- 13,39,82, and 12 μg g ‐1e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“The Mn CDL values for blades 1, 2, 3, and stem of Stacy wheat were 13,39,82, and 12 μg g ‐1”
Claim · model-written summary
Mn critical toxicity level values in sampled wheat tissues are 380, 900, 1100 and 200 μg g ‐1 for blades 1, 2, 3 and stem.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Organ / stage
- blades 1, 2, 3, and stem tissuee1
- Outcome
- Mn CTL valuese1
- Value
- 380, 900, 1100, and 200 μg g ‐1e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“The Mn CTL values of the sampled tissues were 380, 900, 1100, and 200 μg g ‐1 for blades 1, 2, 3, and stem tissue”
Claim · model-written summary
Blade 1 is recommended for wheat tissue sampling.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Organ / stage
- Blade 1e1
- Outcome
- tissue samplinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Blade 1 is recommended for tissue sampling”
Claim · model-written summary
Maximum growth is expected when tissue Mn concentrations are within the CDL and CTL of a specific tissue.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Treatment
- tissue Mn concentrations are within the CDL and CTLe1
- Outcome
- Maximum growthe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Maximum growth would be expected when tissue Mn concentrations are within the CDL and CTL of a specific plant tissue”
Claim · model-written summary
Mn concentration in wheat tissues increased as Mn supply was increased.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Treatment
- Mn supplye1
- Outcome
- Mn concentration in tissuese1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“The Mn concentration in tissues increased as Mn supply was increased”
Claim · model-written summary
Reciprocal Fe/Mn and P/Mn concentrations exist in wheat blade 1.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Organ / stage
- blade 1e1
- Outcome
- reciprocal Fe/Mn and P/Mn concentrationse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“A reciprocal Fe/Mn and P/Mn concentrations existed in blade 1”
Claim · model-written summary
Manganese deficiency reduced K, Ca and Mg concentrations in wheat.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Treatment
- Manganese deficiencye1
- Outcome
- K, Ca, and Mg concentrationse1
- Direction
- reducede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Manganese deficiency and toxicity reduced K, Ca, and Mg concentrations”
Claim · model-written summary
Manganese toxicity reduced K, Ca and Mg concentrations in wheat.
- Taxon
- Wheat ( Triticum aestivum L.)Triticum aestivume0
- Treatment
- toxicitye1
- Outcome
- K, Ca, and Mg concentrationse1
- Direction
- reducede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) production areas”
e1“Manganese deficiency and toxicity reduced K, Ca, and Mg concentrations”
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See all 65 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.