Abstract
Growth and development of cereals is affected by abiotic factors, particularly by high temperature. An important factor in plant adaptation to abiotic stress can be the proline accumulation. Proline is an amino acid involved in a series of metabolic processes and is important as a protein stabilizer, osmolyte and antioxidant. The aim of this experiment was to determine the effect of high temperature on the proline content and yield elements in different cereal varieties during two vegetative seasons. For the investigation, plant material of 8 genetically divergent winter wheat varieties, 1 variety of triticale and 1 oat variety were used. Samples were collected in days with moderate midday air temperatures of 24-26?C in the milk stage and after a few days in the same phenological stage, in conditions of high midday air temperatures of 34-36?C. Proline accumulation was determined spectrophotometrically. Statistical analyses of data were done in the SPSS program. The results during the first experimental year showed that under moderate air temperature conditions proline content was 0.661 ?mol g-1 fresh plant, and in the second experimental year 0.777 ?mol g-1 fresh plant. Under conditions of heat stress during the first year, the content of proline increased to 2.169 ?mol g-1 fresh plant, and in the second experimental year the average content was 2.510 ?mol g-1 fresh plant, which confirms the increase of proline accumulations under heat stress. Compared with other cereal varieties, wheat varieties Zvezdana, Pobeda, Simonida and Avenu were characterized by higher contents of proline in conditions of heat stress in both vegetative seasons. Statistical analysis and correlation of the results of proline accumulation and yield elements showed that more resistant varieties to heat stress conditions have higher yields.
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Claims 9
Claim · model-written summary
First-year moderate-temperature proline content was 0.661 ?mol g-1 fresh plant.
- Taxon
- wheat
Triticum aestivume1 - Outcome
- proline contente0
- Value
- 0.661 ?mol g-1 fresh plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under moderate air temperature conditions proline content was 0.661 ?mol g-1 fresh plant”
e1“8 genetically divergent winter wheat varieties”
Claim · model-written summary
Second-year moderate-temperature proline content was 0.777 ?mol g-1 fresh plant.
- Taxon
- wheatTriticum aestivume1
- Outcome
- proline contente2
- Value
- 0.777 ?mol g-1 fresh plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the second experimental year 0.777 ?mol g-1 fresh plant”
e1“8 genetically divergent winter wheat varieties”
e2“under moderate air temperature conditions proline content”
Claim · model-written summary
Heat increased first-year proline content to 2.169 ?mol g-1 fresh plant.
- Taxon
- wheatTriticum aestivume1
- Treatment
- heat stresse0
- Outcome
- content of prolinee0
- Direction
- increasede0
- Value
- 2.169 ?mol g-1 fresh plante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under conditions of heat stress during the first year, the content of proline increased to 2.169 ?mol g-1 fresh plant”
e1“8 genetically divergent winter wheat varieties”
Claim · model-written summary
Second-year heat-stress proline content averaged 2.510 ?mol g-1 fresh plant.
- Taxon
- wheatTriticum aestivume1
- Outcome
- average contente0
- Direction
- increasee2
- Value
- 2.510 ?mol g-1 fresh plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the second experimental year the average content was 2.510 ?mol g-1 fresh plant”
e1“8 genetically divergent winter wheat varieties”
e2“which confirms the increase of proline accumulations under heat stress”
Claim · model-written summary
Zvezdana had higher proline content under heat stress.
- Taxon
- wheatTriticum aestivume0
- Material
- Zvezdanae0
- Outcome
- contents of prolinee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat varieties Zvezdana, Pobeda, Simonida and Avenu were characterized by higher contents of proline in conditions of heat stress in both vegetative seasons”
Claim · model-written summary
Pobeda had higher proline content under heat stress.
- Taxon
- wheatTriticum aestivume0
- Material
- Pobedae0
- Outcome
- contents of prolinee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat varieties Zvezdana, Pobeda, Simonida and Avenu were characterized by higher contents of proline in conditions of heat stress in both vegetative seasons”
Claim · model-written summary
Simonida had higher proline content under heat stress.
- Taxon
- wheatTriticum aestivume0
- Material
- Simonidae0
- Outcome
- contents of prolinee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat varieties Zvezdana, Pobeda, Simonida and Avenu were characterized by higher contents of proline in conditions of heat stress in both vegetative seasons”
Claim · model-written summary
Avenu had higher proline content under heat stress.
- Taxon
- wheatTriticum aestivume0
- Material
- Avenue0
- Outcome
- contents of prolinee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat varieties Zvezdana, Pobeda, Simonida and Avenu were characterized by higher contents of proline in conditions of heat stress in both vegetative seasons”
Claim · model-written summary
More heat-resistant varieties had higher yields.
- Taxon
- wheatTriticum aestivume1
- Material
- more resistant varietiese0
- Outcome
- yieldse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more resistant varieties to heat stress conditions have higher yields”
e1“8 genetically divergent winter wheat varieties”
The same questions in other papers
heat · physiology: osmolytes · Triticum aestivum (wheat)Positive and negative results
9 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- no effect
12 papers more in this group
See all 16 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.