Abstract
Abstract High temperature stress influences plant growth, seed yield, and fatty acid contents by causing oxidative damage. This study investigated the potential of thiourea (TU) to mitigate oxidative stress and restoring seed oil content and quality in canola. The study thoroughly examined three main factors: (i) growth conditions—control and high temperature stress (35 °C); (ii) TU supplementation (1000 mg/L)—including variations like having no TU, water application at the seedling stage, TU application at seedling stage (BBCH Scale-39), water spray at anthesis stage, and TU application at anthesis stage (BBCH Scale-60); (iii) and two canola genotypes, 45S42 and Hiola-401, were studied separately. High temperature stress reduced growth and tissue water content, as plant height and relative water contents were decreased by 26 and 36% in 45S42 and 27 and 42% Hiola-401, respectively, resulting in a substantial decrease in seed yield per plant by 36 and 38% in 45S42 and Hiola-401. Seed oil content and quality parameters were also negatively affected by high temperature stress as seed oil content was reduced by 32 and 35% in 45S42 and Hiola-401. High-temperature stress increased the plant stress indicators like malondialdehyde, H 2 O 2 content, and electrolyte leakage; these indicators were increased in both canola genotypes as compared to control. Interestingly, TU supplementation restored plant performance, enhancing height, relative water content, foliar chlorophyll (SPAD value), and seed yield per plant by 21, 15, 30, and 28% in 45S42; 19, 13, 26, and 21% in Hiola-401, respectively, under high temperature stress as compared to control. In addition, seed quality, seed oil content, linoleic acid, and linolenic acid were improved by 16, 14, and 22% in 45S42, and 16, 11, and 23% in Hiola-401, as compared to control. The most significant improvements in canola seed yield per plant were observed when TU was applied at the anthesis stage. Additionally, the research highlighted that canola genotype 45S42 responded better to TU applications and exhibited greater resilience against high temperature stress compared to genotype Hiola-401. This interesting study revealed that TU supplementation, particularly at the anthesis stage, improved high temperature stress tolerance, seed oil content, and fatty acid profile in two canola genotypes.
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Claims 9
Claim · model-written summary
Heat decreased plant height by 26% in 45S42 and 27% in Hiola-401.
- Taxon
- Brassica napus L.
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Material
- 45S42e0
- Treatment
- High temperature stresse0
- Outcome
- plant heighte0
- Direction
- decreasede0
- Value
- 26 and 36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Schema note from the model: The sentence gives genotype-specific height values; 26% is within a shared phrase.
Verbatim
e0“High temperature stress reduced growth and tissue water content, as plant height and relative water contents were decreased by 26 and 36% in 45S42 and 27 and 42% Hiola-401, respectively”
t0“Brassica napus L.”
Claim · model-written summary
Heat decreased relative water content in both genotypes.
- Taxon
- Brassica napus L.Brassica napust0
- Treatment
- High temperature stresse1
- Outcome
- relative water contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative water contents were decreased by 26 and 36% in 45S42 and 27 and 42% Hiola-401, respectively”
e1“High temperature stress reduced growth”
t0“Brassica napus L.”
Claim · model-written summary
Heat decreased seed yield by 36% in 45S42 and 38% in Hiola-401.
- Taxon
- Brassica napus L.Brassica napust0
- Treatment
- High temperature stresse1
- Outcome
- seed yield per plante0
- Direction
- decreasee0
- Value
- 36 and 38%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in a substantial decrease in seed yield per plant by 36 and 38% in 45S42 and Hiola-401”
e1“High temperature stress reduced growth”
t0“Brassica napus L.”
Claim · model-written summary
Heat reduced seed oil content by 32% and 35% in the two genotypes.
- Taxon
- Brassica napus L.Brassica napust0
- Treatment
- High temperature stresse1
- Outcome
- seed oil contente0
- Direction
- reducede0
- Value
- 32 and 35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed oil content was reduced by 32 and 35% in 45S42 and Hiola-401”
e1“High temperature stress reduced growth”
t0“Brassica napus L.”
Claim · model-written summary
Heat increased malondialdehyde, hydrogen peroxide and electrolyte leakage in both genotypes.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napuse0 - Treatment
- High-temperature stresse0
- Outcome
- malondialdehyde, H 2 O 2 content, and electrolyte leakagee0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“High-temperature stress increased the plant stress indicators like malondialdehyde, H 2 O 2 content, and electrolyte leakage; these indicators were increased in both canola genotypes as compared to control.”
Claim · model-written summary
Thiourea improved height, water content, chlorophyll and seed yield under heat in both genotypes.
- Taxon
- Brassica napus L.Brassica napust0
- Treatment
- TU supplementatione0
- Outcome
- height, relative water content, foliar chlorophyll (SPAD value), and seed yield per plante0
- Direction
- enhancinge0
- Value
- 21, 15, 30, and 28%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TU supplementation restored plant performance, enhancing height, relative water content, foliar chlorophyll (SPAD value), and seed yield per plant by 21, 15, 30, and 28% in 45S42; 19, 13, 26, and 21% in Hiola-401, respectively, under high temperature stress as compared to control.”
t0“Brassica napus L.”
Claim · model-written summary
Thiourea improved seed quality, oil and fatty acid measures under heat.
- Taxon
- Brassica napus L.Brassica napust0
- Treatment
- TU supplementatione1
- Outcome
- seed quality, seed oil content, linoleic acid, and linolenic acide0
- Direction
- improvede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed quality, seed oil content, linoleic acid, and linolenic acid were improved by 16, 14, and 22% in 45S42, and 16, 11, and 23% in Hiola-401, as compared to control.”
e1“TU supplementation restored plant performance”
t0“Brassica napus L.”
Claim · model-written summary
Anthesis-stage thiourea yielded the greatest seed yield improvement.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- TU was applied at the anthesis stagee0
- Outcome
- seed yield per plante0
- Direction
- improvementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most significant improvements in canola seed yield per plant were observed when TU was applied at the anthesis stage.”
Claim · model-written summary
Genotype 45S42 responded better to thiourea and was more heat resilient than Hiola-401.
- Taxon
- canolaBrassica napus var. napuse0
- Material
- 45S42e0
- Outcome
- resilience against high temperature stresse0
- Direction
- greatere0
- Comparator
- Hiola-401e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“canola genotype 45S42 responded better to TU applications and exhibited greater resilience against high temperature stress compared to genotype Hiola-401.”
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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.