Abstract
Plant reproduction is highly vulnerable to global climate change components such as carbon dioxide concentration ([CO(2)]), temperature (T), and ultraviolet-B (UV-B) radiation. The objectives of this study were to determine the effects of season-long exposure to treatments of [CO(2)] at 360 (control) and 720 micromol mol(-1) (+CO(2)), temperature at 30/22 degrees C (control) and 38/30 degrees C (+T) and UV-B radiation 0 (control) and 10 kJ m(-2) d(-1) (+UV-B) on flower and pollen morphology, pollen production, germination, and tube lengths of six soybean genotypes (D 88-5320, D 90-9216, Stalwart III, PI 471938, DG 5630RR, and DP 4933RR) in sunlit, controlled environment chambers. The control treatment had 360 micromol mol(-1) [CO(2)] at 30/22 degrees C and 0 kJ UV-B. Plants grown either at +UV-B or +T, alone or in combination, produced smaller flowers with shorter standard petal and staminal column lengths. Flowers so produced had less pollen with poor pollen germination and shorter tube lengths. Pollen produced by the flowers of these plants appeared shrivelled without apertures and with disturbed exine ornamentation even at +CO(2) conditions. The damaging effects of +T and +UV-B were not ameliorated by +CO(2) conditions. Based on the total stress response index (TSRI), pooled individual component responses over all the treatments, the genotypes were classified as tolerant (DG 5630RR, D 88-5320: TSRI >-790), intermediate (D 90-9216, PI 471938: TSRI <-790 to >-1026), and sensitive (Stalwart III, DP 4933RR: TSRI <-1026). The differences in sensitivity identified among genotypes imply the options for selecting genotypes with tolerance to environmental stresses projected to occur in the future climates.
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Claims 8
Claim · model-written summary
Elevated UV-B or temperature, alone or combined, yielded smaller soybean flowers and shorter petal and staminal columns.
- Taxon
- soybean
Glycine maxt0 - Treatment
- +UV-B or +Te0
- Outcome
- smaller flowers with shorter standard petal and staminal column lengthse0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“Plants grown either at +UV-B or +T, alone or in combination, produced smaller flowers with shorter standard petal and staminal column lengths.”
Claim · model-written summary
Flowers under elevated UV-B or temperature had less pollen, poor germination and shorter pollen tubes.
- Taxon
- soybeanGlycine maxt0
- Treatment
- +UV-B or +Te1
- Outcome
- less pollen with poor pollen germination and shorter tube lengthse0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“Flowers so produced had less pollen with poor pollen germination and shorter tube lengths.”
e1“Plants grown either at +UV-B or +T, alone or in combination”
Claim · model-written summary
Pollen under elevated UV-B or temperature appeared shrivelled without apertures and with disturbed exine ornamentation even with elevated CO2.
- Taxon
- soybeanGlycine maxt0
- Treatment
- +UV-B or +Te1
- Outcome
- appeared shrivelled without apertures and with disturbed exine ornamentatione0
- Qualifier
- +CO(2) conditionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“Pollen produced by the flowers of these plants appeared shrivelled without apertures and with disturbed exine ornamentation even at +CO(2) conditions.”
e1“Plants grown either at +UV-B or +T, alone or in combination”
Claim · model-written summary
Elevated CO2 did not ameliorate damage from elevated temperature and UV-B in soybean.
- Taxon
- soybeanGlycine maxt0
- Treatment
- +CO(2) conditionse0
- Outcome
- damaging effects of +T and +UV-Be0
- Direction
- not amelioratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“The damaging effects of +T and +UV-B were not ameliorated by +CO(2) conditions.”
Claim · model-written summary
DG 5630RR and D 88-5320 were classified as tolerant by the total stress response index.
- Taxon
- soybeanGlycine maxt0
- Material
- DG 5630RR, D 88-5320e0
- Outcome
- tolerante0
- Value
- TSRI >-790e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“the genotypes were classified as tolerant (DG 5630RR, D 88-5320: TSRI >-790)”
Claim · model-written summary
D 90-9216 and PI 471938 were classified as intermediate by the total stress response index.
- Taxon
- soybeanGlycine maxt0
- Material
- D 90-9216, PI 471938e0
- Outcome
- intermediatee0
- Value
- TSRI <-790 to >-1026e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“intermediate (D 90-9216, PI 471938: TSRI <-790 to >-1026)”
Claim · model-written summary
Stalwart III and DP 4933RR were classified as sensitive by the total stress response index.
- Taxon
- soybeanGlycine maxt0
- Material
- Stalwart III, DP 4933RRe0
- Outcome
- sensitivee0
- Value
- TSRI <-1026e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“sensitive (Stalwart III, DP 4933RR: TSRI <-1026)”
Claim · model-written summary
Genotype sensitivity differences imply potential selection for tolerance to future environmental stresses.
- Taxon
- soybeanGlycine maxt0
- Outcome
- selecting genotypes with tolerance to environmental stressese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max L.)”
e0“The differences in sensitivity identified among genotypes imply the options for selecting genotypes with tolerance to environmental stresses projected to occur in the future climates.”
The same questions in other papers
uv · yield · Glycine max (soybean)Results differ
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- positive
- positive
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See all 29 papers →uv · phenology · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
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.