Abstract
Abstract Six varieties of oat ( Avena sativa L. cv. Stormogul II, Risto, Sol II, Selma, Sang and Pendek, arranged according to decreasing drought resistance) were cultivated under controlled conditions and exposed to water stress on 4 consecutive days. Seven‐day‐old seedlings were stressed by cooling the roots for 3 h to 1.0°C. During this treatment the leaf water potential decreased from ‐7 to ‐12 bars. Cuticular transpiration rate, total amount of epicuticular wax and amounts of some wax components (primary alcohols, alkanes, fatty acids) were determined. Unstressed seedlings of the most drought resistant variety (Stormogul II) showed the highest cuticular transpiration rate. After stress treatment the cuticular transpiration rate was most strongly reduced in this variety and at the same time it showed the largest increase in amount of epicuticular wax of the tested varieties. In Pendek and Sang, showing the least increase in epicuticular wax, the cuticular transpiration rate was only 5% lower after stress treatment. In all varieties the primary alcohol content of the epicuticular wax was slightly higher in stressed seedlings than in controls. Further, in Stormogul and Risto the content of the predominant alkanes was much lower in stressed seedlings than in controls. On the contrary, in Pendek the stressed seedlings showed a higher alkane content. In Stormogul II, Risto and Sol II the total amount of fatty acids was higher in stressed seedlings than in controls while the opposite was true in Sang. The relation between the epicuticular wax (amount and composition) and the cuticular transpiration rate is discussed as well as the possibility of using the tested parameters in a screening test for drought resistance.
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Claims 11
Claim · model-written summary
Water stress lowered leaf water potential from ‐7 to ‐12 bars.
- Taxon
- oat
Avena sativat0 - Treatment
- water stresse1
- Outcome
- leaf water potentiale0
- Direction
- decreasede0
- Value
- from ‐7 to ‐12 barse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During this treatment the leaf water potential decreased from ‐7 to ‐12 bars.”
t0“Six Oat Varieties”
e1“exposed to water stress on 4 consecutive days.”
Claim · model-written summary
Unstressed Stormogul II had the highest cuticular transpiration rate.
- Taxon
- oatAvena sativat0
- Material
- Stormogul IIe0
- Outcome
- cuticular transpiration ratee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Unstressed seedlings of the most drought resistant variety (Stormogul II) showed the highest cuticular transpiration rate.”
t0“Six Oat Varieties”
Claim · model-written summary
Water stress most strongly reduced cuticular transpiration in Stormogul II.
- Taxon
- oatAvena sativat0
- Material
- Stormogul IIe1
- Treatment
- stress treatmente0
- Outcome
- cuticular transpiration ratee0
- Direction
- reducede0
- Comparator
- Unstressed seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After stress treatment the cuticular transpiration rate was most strongly reduced in this variety”
t0“Six Oat Varieties”
e1“Unstressed seedlings of the most drought resistant variety (Stormogul II) showed the highest cuticular transpiration rate.”
Claim · model-written summary
Stormogul II had the largest increase in epicuticular wax after stress.
- Taxon
- oatAvena sativat0
- Material
- Stormogul IIe2
- Treatment
- stress treatmente1
- Outcome
- amount of epicuticular waxe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it showed the largest increase in amount of epicuticular wax of the tested varieties.”
t0“Six Oat Varieties”
e1“After stress treatment the cuticular transpiration rate was most strongly reduced in this variety”
e2“Unstressed seedlings of the most drought resistant variety (Stormogul II) showed the highest cuticular transpiration rate.”
Claim · model-written summary
Pendek and Sang had the least wax increase after stress.
- Taxon
- oatAvena sativat0
- Material
- Pendek and Sange0
- Treatment
- stress treatmente1
- Outcome
- epicuticular waxe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Pendek and Sang, showing the least increase in epicuticular wax”
t0“Six Oat Varieties”
e1“After stress treatment the cuticular transpiration rate was most strongly reduced in this variety”
Claim · model-written summary
Cuticular transpiration in Pendek and Sang was 5% lower after stress.
- Taxon
- oatAvena sativat0
- Material
- Pendek and Sange1
- Treatment
- stress treatmente0
- Outcome
- cuticular transpiration ratee0
- Direction
- lowere0
- Value
- 5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cuticular transpiration rate was only 5% lower after stress treatment.”
t0“Six Oat Varieties”
e1“In Pendek and Sang, showing the least increase in epicuticular wax”
Claim · model-written summary
Primary alcohol content of epicuticular wax was slightly higher in stressed seedlings of all varieties.
- Taxon
- oatAvena sativat0
- Treatment
- stressed seedlingse0
- Outcome
- primary alcohol content of the epicuticular waxe0
- Direction
- highere0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all varieties the primary alcohol content of the epicuticular wax was slightly higher in stressed seedlings than in controls.”
t0“Six Oat Varieties”
Claim · model-written summary
Predominant alkane content was much lower after stress in Stormogul and Risto.
- Taxon
- oatAvena sativat0
- Material
- Stormogul and Ristoe0
- Treatment
- stressed seedlingse0
- Outcome
- content of the predominant alkanese0
- Direction
- lowere0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Stormogul and Risto the content of the predominant alkanes was much lower in stressed seedlings than in controls.”
t0“Six Oat Varieties”
Claim · model-written summary
Alkane content was higher after stress in Pendek.
- Taxon
- oatAvena sativat0
- Material
- Pendeke0
- Treatment
- stressed seedlingse0
- Outcome
- alkane contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Pendek the stressed seedlings showed a higher alkane content.”
t0“Six Oat Varieties”
Claim · model-written summary
Total fatty acid amount was higher after stress in Stormogul II, Risto and Sol II.
- Taxon
- oatAvena sativat0
- Material
- Stormogul II, Risto and Sol IIe0
- Treatment
- stressed seedlingse0
- Outcome
- total amount of fatty acidse0
- Direction
- highere0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Stormogul II, Risto and Sol II the total amount of fatty acids was higher in stressed seedlings than in controls”
t0“Six Oat Varieties”
Claim · model-written summary
Total fatty acid amount was lower after stress in Sang.
- Taxon
- oatAvena sativat0
- Material
- Sange0
- Treatment
- stressed seedlingse1
- Outcome
- total amount of fatty acidse1
- Comparator
- controlse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while the opposite was true in Sang.”
t0“Six Oat Varieties”
e1“In Stormogul II, Risto and Sol II the total amount of fatty acids was higher in stressed seedlings than in controls”
The same questions in other papers
drought · physiology: water · Avena sativa (oats)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
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.