Abstract
Abstract Yield losses due to boron deficiency are becoming common in the warmer subtropical regions into which wheat has been expanding. This study evaluated the B response of two wheat ( Triticum aestivum L.) genotypes (SW41 and Sonora 64) in Chiang Mai, Thailand. A sand culture experiment imposed six B levels in nutrient solution (0, 0.1, 0.2, 0.5, 1, and 10 µ M B). A series of field experiments in a sandy loam (Typic Tropaqualf) under rainfed conditions imposed four levels of borax application (0, 0.5, 1, and 2 kg B ha −1 ) over three successive years. In sand culture, B deficiency depressed the number of grains per spikelet in both genotypes (more strongly in SW41 than in Sonora 64). At 0 µ M B, SW41 had no grain in any spikelet. In the field, B deficiency depressed grain number and grain yield of SW41 but not Sonora 64. Flag leaf B at boot stage of both genotypes grown in sand culture was closely related to the number of grains per spikelet at maturity; the critical level was determined to be 3 mg B kg −1 . For field‐grown plants, the data suggest that, at the boot stage, flag leaf B concentrations of <5 mg kg −1 are deficient, and >7 are sufficient. Boron deficiency can depress wheat yield through grain set failure, but susceptibility to B deficiency varies with genotype. Sensitivity to B deficiency should be included as a criterion for breeding programs for low‐B soils.
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Claims 8
Claim · model-written summary
B deficiency reduced grains per spikelet in both genotypes, more in SW41.
- Taxon
- wheat ( Triticum aestivum L.)
Triticum aestivumt0 - Material
- SW41e0
- Treatment
- B deficiencye0
- Outcome
- number of grains per spikelete0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B deficiency depressed the number of grains per spikelet in both genotypes (more strongly in SW41 than in Sonora 64)”
t0“two wheat ( Triticum aestivum L.) genotypes”
Claim · model-written summary
At zero B, SW41 set no grain in any spikelet.
- Taxon
- wheat ( Triticum aestivum L.)Triticum aestivumt0
- Material
- SW41e0
- Treatment
- 0 µ M Be0
- Outcome
- no grain in any spikelete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 0 µ M B, SW41 had no grain in any spikelet”
t0“two wheat ( Triticum aestivum L.) genotypes”
Claim · model-written summary
Field B deficiency depressed SW41 grain number and grain yield.
- Taxon
- wheat ( Triticum aestivum L.)Triticum aestivumt0
- Material
- SW41e0
- Treatment
- B deficiencye0
- Outcome
- grain number and grain yielde0
- Direction
- depressede0
- Setting
- fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, B deficiency depressed grain number and grain yield of SW41 but not Sonora 64”
t0“two wheat ( Triticum aestivum L.) genotypes”
Claim · model-written summary
Field B deficiency did not depress Sonora 64 grain number and yield.
- Taxon
- wheat ( Triticum aestivum L.)Triticum aestivumt0
- Material
- Sonora 64e0
- Treatment
- B deficiencye0
- Outcome
- grain number and grain yielde0
- Direction
- note0
- Setting
- fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, B deficiency depressed grain number and grain yield of SW41 but not Sonora 64”
t0“two wheat ( Triticum aestivum L.) genotypes”
Claim · model-written summary
Boot stage flag leaf B in sand culture was closely related to grains per spikelet at maturity, with a 3 mg B kg −1 critical level.
- Taxon
- wheat ( Triticum aestivum L.)Triticum aestivumt0
- Organ / stage
- Flag leafe0
- Outcome
- number of grains per spikelete0
- Value
- 3 mg B kg −1e0
- Setting
- sand culturee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flag leaf B at boot stage of both genotypes grown in sand culture was closely related to the number of grains per spikelet at maturity; the critical level was determined to be 3 mg B kg −1”
t0“two wheat ( Triticum aestivum L.) genotypes”
Claim · model-written summary
Field grown plants below 5 mg kg −1 flag leaf B were assessed as deficient, and above 7 as sufficient.
- Taxon
- wheat ( Triticum aestivum L.)Triticum aestivumt0
- Outcome
- flag leaf B concentrationse0
- Value
- <5 mg kg −1e0
- Qualifier
- deficiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For field‐grown plants, the data suggest that, at the boot stage, flag leaf B concentrations of <5 mg kg −1 are deficient, and >7 are sufficient”
t0“two wheat ( Triticum aestivum L.) genotypes”
Claim · model-written summary
B deficiency can depress wheat yield through failed grain set.
- Taxon
- wheat ( Triticum aestivum L.)Triticum aestivumt0
- Treatment
- Boron deficiencye0
- Outcome
- wheat yielde0
- Direction
- depresse0
- Qualifier
- grain set failuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boron deficiency can depress wheat yield through grain set failure”
t0“two wheat ( Triticum aestivum L.) genotypes”
Claim · model-written summary
Breeding for low B soils should include sensitivity to B deficiency as a criterion.
- Taxon
- wheat ( Triticum aestivum L.)Triticum aestivumt0
- Outcome
- Sensitivity to B deficiency should be included as a criterion for breeding programs for low‐B soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sensitivity to B deficiency should be included as a criterion for breeding programs for low‐B soils”
t0“two wheat ( Triticum aestivum L.) genotypes”
The same questions in other papers
boron atom · yield · Triticum aestivum (wheat)Results differ
61 papers in the same direction as this paper · 12 in the opposite direction · 2 reporting no difference from an alternative
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
72 papers more in this group
See all 76 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.