Abstract
Abstract Seed yields were significantly reduced on corn ( Zea mays L.) plants where the silks had been exposed to an episode of simulated acid rain at pH 3.6 as compared with yields on plants with silks exposed to simulated rain of pH 5.6. The reduction in yield appeared related to a decrease in pollen germination and tube elongation associated with acidic conditions and limited quantities of pollen available for pollination. Germination and tube elongation of pollen were inhibited when grown on an agar medium acidified to pH 4.6 with simulated rain. Germination of pollen grains was reduced as much as 75% on silks previously exposed to a simulated rain of pH 3.6 as compared with germination on silks exposed to simulated rain of pH 5.6. The results suggest that under environmental conditions that limit the quantity of pollen, acid rain could reduce crop yields in corn by inhibiting the reproductive process.
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Claims 5
Claim · model-written summary
Acid rain at pH 3.6 significantly reduced corn seed yield relative to pH 5.6 rain.
- Taxon
- corn
Zea mays subsp. mayse0 - Organ / stage
- silkse0
- Treatment
- simulated acid rain at pH 3.6e0
- Outcome
- Seed yieldse0
- Direction
- reducede0
- Comparator
- simulated rain of pH 5.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yields were significantly reduced on corn ( Zea mays L.) plants where the silks had been exposed to an episode of simulated acid rain at pH 3.6 as compared with yields on plants with silks exposed to simulated rain of pH 5.6.”
Claim · model-written summary
Acidic agar medium inhibited corn pollen germination and tube elongation.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- agar medium acidified to pH 4.6 with simulated raine0
- Outcome
- Germination and tube elongation of pollene0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Germination and tube elongation of pollen were inhibited when grown on an agar medium acidified to pH 4.6 with simulated rain.”
t0“Corn”
Claim · model-written summary
Pollen germination on silks exposed to pH 3.6 rain fell by up to 75% relative to pH 5.6.
- Taxon
- cornZea mays subsp. mayst0
- Organ / stage
- silkse0
- Treatment
- simulated rain of pH 3.6e0
- Outcome
- Germination of pollen grainse0
- Direction
- reducede0
- Value
- 75%e0
- Comparator
- simulated rain of pH 5.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Germination of pollen grains was reduced as much as 75% on silks previously exposed to a simulated rain of pH 3.6 as compared with germination on silks exposed to simulated rain of pH 5.6.”
t0“Corn”
Claim · model-written summary
Yield reduction appeared related to poorer pollen germination and tube elongation under acidic conditions and limited pollen.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- reduction in yielde0
- Qualifier
- a decrease in pollen germination and tube elongation associated with acidic conditions and limited quantities of pollen available for pollinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction in yield appeared related to a decrease in pollen germination and tube elongation associated with acidic conditions and limited quantities of pollen available for pollination.”
t0“Corn”
Claim · model-written summary
The authors suggest acid rain could reduce corn yield under limited-pollen conditions by inhibiting reproduction.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- acid raine0
- Outcome
- crop yieldse0
- Direction
- reducee0
- Qualifier
- under environmental conditions that limit the quantity of pollene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under environmental conditions that limit the quantity of pollen, acid rain could reduce crop yields in corn by inhibiting the reproductive process.”
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