Abstract
A study was conducted to investigate the relationship between stomate density and size on reaction of tobacco ( Nicotiana tabacum L.) to elevated concentrations of ozone. The resistant varieties ‘Florida 20’ and ‘C‐80’ averaged 25.4 stomates per mm 2 on the adaxial leaf surface, while the susceptible varieties ‘2612‐2,’ ‘2612‐3,’ and ‘Bel W‐3’ averaged 37.4. This decrease in stomate density by one‐third in resistant varieties is thought to be associated with resistance by reducing the amount of ozone‐rich air which can enter the leaf. No relationship was found between stomatal size and plant reaction to ozone.
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Claims 3
Claim · model-written summary
Resistant tobacco varieties averaged 25.4 stomates per mm 2 versus 37.4 in susceptible varieties.
- Taxon
- tobacco
Nicotiana tabacume1 - Material
- ‘Florida 20’ and ‘C‐80’e0
- Organ / stage
- adaxial leaf surfacee0
- Outcome
- stomates per mm 2e0
- Direction
- decreaseinferrede0
- Value
- 25.4 stomates per mm 2e0
- Qualifier
- 37.4e0
- Comparator
- susceptible varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The resistant varieties ‘Florida 20’ and ‘C‐80’ averaged 25.4 stomates per mm 2 on the adaxial leaf surface, while the susceptible varieties ‘2612‐2,’ ‘2612‐3,’ and ‘Bel W‐3’ averaged 37.4.”
e1“tobacco ( Nicotiana tabacum L.)”
Claim · model-written summary
The authors associated the one-third lower stomatal density of resistant varieties with resistance through reduced ozone-rich air entry.
- Taxon
- tobaccoNicotiana tabacume1
- Outcome
- resistancee0
- Value
- one‐thirde0
- Qualifier
- reducing the amount of ozone‐rich air which can enter the leafe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This decrease in stomate density by one‐third in resistant varieties is thought to be associated with resistance by reducing the amount of ozone‐rich air which can enter the leaf.”
e1“tobacco ( Nicotiana tabacum L.)”
Claim · model-written summary
Stomatal size was not related to plant reaction to ozone.
- Taxon
- tobaccoNicotiana tabacume1
- Organ / stage
- stomatale0
- Outcome
- plant reaction to ozonee0
- Direction
- No relationshipe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No relationship was found between stomatal size and plant reaction to ozone.”
e1“tobacco ( Nicotiana tabacum L.)”