Abstract
• 94 OSR genotypes were heat/cold stressed during flowering. • Cold stress only had a minimum effect compared to control. • Overall there was 1.3-fold drop in seed yield after 3 days heat stress. • We have identified 28 genotypes which are tolerant to heat stress. • We have identified 5 genotypes able to maintain high yield under heat stress. As a result of climate change temperature extremes are being frequently experienced, which are endangering agricultural production. Oilseed rape ( Brassica napus L.; OSR) is an important cool-season oil crop grown worldwide; however, extremes of cold and heat are major threats to production that cause considerable yield losses especially at the flowering developmental stage. The aim of this study was to evaluate the physiological performance of diverse oilseed rape genotypes during reproduction under cold and heat stress. 94 diverse genotypes with variable characteristics and temperature tolerances were treated for 3 days under cold (6/4 °C) and heat (35/23 °C) stress, and yield traits were analysed. Phenotypic analysis of these rapeseed genotypes revealed the impact of cold/heat stress on flowering periods, with cold stress having a minimal, non-significant negative effect on final yield. Heat stress reduced seed yield by 1.3 fold ( P = 0.0009), with a significant effect on numerous parameters collected from the main raceme including, seed weight, number, and seed pod fertility. We have identified 28 genotypes that appear tolerant to heat stress, with 5 maintaining high yield that could be used for breeding of heat-tolerant lines for future climate changes.
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Claims 9
Claim · model-written summary
Cold stress minimally and non significantly reduced final yield relative to control.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- Cold stresse0
- Outcome
- minimum effecte0
- Direction
- minimum effecte0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Cold stress only had a minimum effect compared to control.”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
Claim · model-written summary
Heat stress for three days reduced seed yield 1.3 fold.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Heat stresse0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- 1.3 folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat stress reduced seed yield by 1.3 fold ( P = 0.0009)”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
Claim · model-written summary
Heat stress significantly affected main raceme seed weight.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- main racemee0
- Treatment
- Heat stresse0
- Outcome
- seed weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat stress reduced seed yield by 1.3 fold ( P = 0.0009), with a significant effect on numerous parameters collected from the main raceme including, seed weight, number, and seed pod fertility.”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
Claim · model-written summary
Heat stress significantly affected main raceme seed number.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- main racemee0
- Treatment
- Heat stresse0
- Outcome
- numbere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat stress reduced seed yield by 1.3 fold ( P = 0.0009), with a significant effect on numerous parameters collected from the main raceme including, seed weight, number, and seed pod fertility.”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
Claim · model-written summary
Heat stress significantly affected main raceme seed pod fertility.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- main racemee0
- Treatment
- Heat stresse0
- Outcome
- seed pod fertilitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat stress reduced seed yield by 1.3 fold ( P = 0.0009), with a significant effect on numerous parameters collected from the main raceme including, seed weight, number, and seed pod fertility.”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
Claim · model-written summary
Cold and heat stress affected flowering periods.
Not reportedComparatorDirection
Verbatim
e0“Phenotypic analysis of these rapeseed genotypes revealed the impact of cold/heat stress on flowering periods”
Claim · model-written summary
Twenty eight genotypes appeared tolerant to heat stress.
- Taxon
- Brassica napusBrassica napust0
- Material
- genotypese0
- Outcome
- tolerant to heat stresse0
- Value
- 28 genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We have identified 28 genotypes that appear tolerant to heat stress”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
Claim · model-written summary
Five genotypes maintained high yield under heat stress.
- Taxon
- Brassica napusBrassica napust0
- Material
- genotypese0
- Treatment
- heat stresse0
- Outcome
- maintaining high yielde0
- Value
- 5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We have identified 28 genotypes that appear tolerant to heat stress, with 5 maintaining high yield that could be used for breeding of heat-tolerant lines for future climate changes.”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
Claim · model-written summary
The authors proposed the five high yield genotypes for heat tolerance breeding.
- Taxon
- Brassica napusBrassica napust0
- Outcome
- could be used for breeding of heat-tolerant lines for future climate changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with 5 maintaining high yield that could be used for breeding of heat-tolerant lines for future climate changes.”
t0“Large scale phenotyping on the effect of heat and cold stress on Brassica napus during floral development”
The same questions in other papers
heat · yield · Brassica napus (oilseed rape)Positive and negative results
18 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
18 papers more in this group
See all 22 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.