Abstract
Abstract The root morphology (root length, diameter) of the three wheat genotypes (Triticum aestivum L. cvs Excalibur and Gatcher, and T. turgidum conv. durum (Desf.) McKay cv Durati) grown in zinc (Zn)‐deficient, sandy soil under controlled conditions has been measured by a root scanner coupled to a computer. Wheat plants were supplied with 0, 0.025, 0.05, 0.1, 0.2, or 0.4 mg Zn/kg soil. Excalibur has previously been identified as the Zn‐efficient genotype which can take up more Zn and has higher yield in soils with low plant‐available Zn. Durati is Zn‐inefficient and Gatcher an intermediate genotype with respect to Zn efficiency. Root and shoot dry matter significantly increased at 0.1 mg Zn/kg soil compared to the 0 Zn level. Zinc content in shoots was lower in Durati than in Excalibur and Gatcher at sufficient supply of Zn. Zinc applications had no significant effect on root morphology at two weeks after sowing. At that time, however, the Zn‐efficient genotype Excalibur developed a longer and thinner roots (greater proportion of fine roots with diameter <0.2 mm) than the less efficient Gatcher and Zn‐inefficient Durati. Hence, growing longer and thinner roots and having a greater proportion of thinner roots in the total root biomass early in the growth period may be the two characters associated with the Zn‐efficient genotypes.
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Claims 5
Claim · model-written summary
Root and shoot dry matter increased at 0.1 mg Zn/kg soil versus no Zn.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- 0.1 mg Zn/kg soile1
- Outcome
- Root and shoot dry mattere1
- Direction
- increasede1
- Comparator
- 0 Zn levele1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three wheat genotypes”
e1“Root and shoot dry matter significantly increased at 0.1 mg Zn/kg soil compared to the 0 Zn level.”
Claim · model-written summary
Durati had lower shoot Zn content than Excalibur and Gatcher under sufficient Zn.
- Taxon
- wheatTriticum aestivume0
- Material
- Duratie1
- Outcome
- Zinc content in shootse1
- Direction
- lowere1
- Comparator
- Excalibur and Gatchere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three wheat genotypes”
e1“Zinc content in shoots was lower in Durati than in Excalibur and Gatcher at sufficient supply of Zn.”
Claim · model-written summary
Zinc applications did not significantly affect root morphology at two weeks.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Zinc applicationse1
- Outcome
- root morphologye1
- Direction
- no significant effecte1
- Qualifier
- two weeks after sowinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three wheat genotypes”
e1“Zinc applications had no significant effect on root morphology at two weeks after sowing.”
Claim · model-written summary
Excalibur had longer and thinner roots than Gatcher and Durati at two weeks.
- Taxon
- wheatTriticum aestivume0
- Material
- Excalibure1
- Outcome
- rootse1
- Direction
- longer and thinnere1
- Comparator
- Gatcher and Zn‐inefficient Duratie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three wheat genotypes”
e1“Excalibur developed a longer and thinner roots (greater proportion of fine roots with diameter <0.2 mm) than the less efficient Gatcher and Zn‐inefficient Durati.”
Claim · model-written summary
The authors associate early long, thin roots with zinc efficiency.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- rootse1
- Outcome
- Zn‐efficient genotypese1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three wheat genotypes”
e1“growing longer and thinner roots and having a greater proportion of thinner roots in the total root biomass early in the growth period may be the two characters associated with the Zn‐efficient genotypes.”
The same questions in other papers
zinc atom · growth · Triticum aestivum (wheat)Results differ
154 papers in the same direction as this paper · 43 in the opposite direction · 2 reporting no difference from an alternative
- positive
- no effect
- no effect
196 papers more in this group
See all 200 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.