Abstract
Drought tolerance of Brassica crops can be genetically improved by establishing plant ideotypes with improved yield responses associated with agronomic traits and biochemical markers. The objective of this study was to compare 20 Brassica oleracea L. accessions grown under two different water treatments (100% and 35% reintegration of evapotranspiration by irrigation) to select potential tolerant genotypes for organic cultivation based on several agronomic and biochemical parameters measured in response to drought stress. Significant differences were registered for the genotype and the irrigation regime and for their interaction (p < 0.0001 ***). A principal component analysis was performed to summarize the correlations among the analyzed phytochemicals and the stressed and not stressed genotypes and highlighted the importance of the antioxidant compounds as stress biomarkers. The present results showed that drought significantly reduces growth parameters and increases the amount of ascorbic acid and polyphenols compared to the irrigated control. Additionally, the results show that antioxidant metabolism increased by drought in some genotypes while others maintained a good biomass production by increasing the value of growth parameters considered. Based on the average sum of ranks (ASR) of morpho-physiological and biochemical parameters, the genotypes CR, CC, and BH were determined to be the most drought tolerant, whereas CI5, BU, and CV1 were determined to be the most susceptible. Due to the potential of these genotypes, further molecular and cellular research will be carried out to identify the genetic marker associated with the water stress response.
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Claims 8
Claim · model-written summary
Genotype, irrigation regime, and their interaction differed significantly.
- Taxon
- Brassica oleracea L.
Brassica oleraceat0 - Outcome
- genotype and the irrigation regime and for their interactione0
- Value
- p < 0.0001 ***e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant differences were registered for the genotype and the irrigation regime and for their interaction (p < 0.0001 ***)”
t0“Brassica oleracea L.”
Claim · model-written summary
Antioxidant compounds were highlighted as stress biomarkers.
- Taxon
- Brassica oleracea L.Brassica oleraceat0
- Compound
- antioxidant compoundse0
- Outcome
- stress biomarkerse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highlighted the importance of the antioxidant compounds as stress biomarkers”
t0“Brassica oleracea L.”
Claim · model-written summary
Drought significantly reduced growth parameters relative to the irrigated control.
- Taxon
- Brassica oleracea L.Brassica oleraceat0
- Treatment
- droughte0
- Outcome
- growth parameterse0
- Direction
- reducese0
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought significantly reduces growth parameters and increases the amount of ascorbic acid and polyphenols compared to the irrigated control”
t0“Brassica oleracea L.”
Claim · model-written summary
Drought increased ascorbic acid and polyphenols relative to the irrigated control.
- Taxon
- Brassica oleracea L.Brassica oleraceat0
- Treatment
- droughte0
- Outcome
- amount of ascorbic acid and polyphenolse0
- Direction
- increasese0
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought significantly reduces growth parameters and increases the amount of ascorbic acid and polyphenols compared to the irrigated control”
t0“Brassica oleracea L.”
Claim · model-written summary
Drought increased antioxidant metabolism in some genotypes.
- Taxon
- Brassica oleracea L.Brassica oleraceat0
- Treatment
- droughte0
- Outcome
- antioxidant metabolisme0
- Direction
- increasede0
- Qualifier
- some genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“antioxidant metabolism increased by drought in some genotypes”
t0“Brassica oleracea L.”
Claim · model-written summary
Other genotypes maintained good biomass production through increased growth parameters.
- Taxon
- Brassica oleracea L.Brassica oleraceat0
- Outcome
- biomass productione0
- Direction
- maintainede0
- Qualifier
- increasing the value of growth parameters considerede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“others maintained a good biomass production by increasing the value of growth parameters considered”
t0“Brassica oleracea L.”
Claim · model-written summary
CR, CC, and BH were classified as most drought tolerant.
- Taxon
- Brassica oleracea L.Brassica oleraceat0
- Material
- CR, CC, and BHe0
- Outcome
- most drought tolerante0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotypes CR, CC, and BH were determined to be the most drought tolerant”
t0“Brassica oleracea L.”
Claim · model-written summary
CI5, BU, and CV1 were classified as most susceptible.
- Taxon
- Brassica oleracea L.Brassica oleraceat0
- Material
- CI5, BU, and CV1e0
- Outcome
- most susceptiblee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CI5, BU, and CV1 were determined to be the most susceptible”
t0“Brassica oleracea L.”
The same questions in other papers
drought · growth · Brassica oleracea (wild cabbage)Results differ
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2 papers in the same direction as this paper · 1 in the opposite direction
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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.