Abstract
A preliminary observation indicated that iron‐deficiency cholorosis of soybeans [ Glycine max (L.) Merr.] grown on calcareous soil may have been accentuated after hail injury that occurred during vegetative growth. The objective of our experiment was to determine the effect of plant cutoff and defoliation on the chlorosis expressed by new leaf tissue that develops after injury occurs. Ten soybean cultivars that differed in resistance to iron‐deficiency chlorosis were grown on a calcareous soil during 2 years. Plants were treated at the V1 to V5 stages of development by removing the main stem above the cotyledonary node, removing the main stem above the unifoliolate node, or complete defoliation. Chlorosis was increased an average of 0.9 score by plant cutoff above the cotyledons, 0.6 score by cutoff above the unifoliolates, and 0.2 score by defoliation. For each type of injury, the stage of development when the treatment was imposed had a significant effect on the change in chlorosis expressed during one or both years. The differences in response among cultivars and the year ✕ cultivar, treatment ✕ cultivar, and year ✕ treatment ✕ cultivar interactions were significant. The increase in chlorosis from plant injury may cause yield loss in addition to that resulting from the injury per se. Artificial plant injury may be a useful tool in selection for improved genetic resistance to iron‐deficiency chlorosis.
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Claims 6
Claim · model-written summary
Injury increased chlorosis by 0.9 score.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- plant cutoff above the cotyledonse0
- Outcome
- Chlorosise0
- Direction
- increasede0
- Value
- 0.9 scoree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Cultivars”
e0“Chlorosis was increased an average of 0.9 score by plant cutoff above the cotyledons”
Claim · model-written summary
Injury increased chlorosis by 0.6 score.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- cutoff above the unifoliolatese0
- Outcome
- Chlorosise1
- Direction
- increaseinferrede0
- Value
- 0.6 scoree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Cultivars”
e0“0.6 score by cutoff above the unifoliolates”
e1“Chlorosis was increased an average of 0.9 score by plant cutoff above the cotyledons”
Claim · model-written summary
Injury increased chlorosis by 0.2 score.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- defoliatione0
- Outcome
- Chlorosise1
- Direction
- increaseinferrede0
- Value
- 0.2 scoree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Cultivars”
e0“0.2 score by defoliation”
e1“Chlorosis was increased an average of 0.9 score by plant cutoff above the cotyledons”
Claim · model-written summary
Injury stage significantly affected chlorosis change.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- stage of developmente0
- Outcome
- change in chlorosise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Cultivars”
e0“the stage of development when the treatment was imposed had a significant effect on the change in chlorosis expressed during one or both years”
Claim · model-written summary
Cultivar responses and year by cultivar, treatment by cultivar, and three-way interactions were significant.
- Taxon
- SoybeanGlycine maxt0
- Material
- cultivarse0
- Outcome
- differences in responsee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Cultivars”
e0“The differences in response among cultivars and the year ✕ cultivar, treatment ✕ cultivar, and year ✕ treatment ✕ cultivar interactions were significant”
Claim · model-written summary
Artificial injury may aid selection for resistance to iron-deficiency chlorosis.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- selection for improved genetic resistance to iron‐deficiency chlorosise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Cultivars”
e0“Artificial plant injury may be a useful tool in selection for improved genetic resistance to iron‐deficiency chlorosis”
The same questions in other papers
pruning · physiology: pigments · Glycine max (soybean)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- no effect
2 papers more in this group
See all 6 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.