Abstract
Waterlogging causes deleterious physiological changes which restrict canola growth and yield. The objective of this work was to compare the effects of the foliar applications of urea, calcium nitrate, potassium nitrate and tricyclazole at different times on selected biochemical and morphological characteristics of canola plants (Brassica napus L. cv. Hayola 401) under waterlogging stress conditions. Plants in the 5-leaf growth stage were exposed to the flooding conditions for two weeks. The results showed that the content of chlorophyll a, chlorophyll b, chlorophyll a/b ratio and carotenoid in the leaves of canola were reduced after this stress. The flooding stress also significantly decreased the grain yield, number of siliques per plant, plant height, stem width, number of branches and branching position. The higher pigments content in the leaves, the increase in the number of siliques per plant (which was responsible for the significantly greater grain yield over the waterlogged control) and increase in other morphological characteristics were obtained by foliar application of calcium nitrate, potassium nitrate and tricyclazole. The foliar spray of urea caused a less significant increase for these characteristics. The foliar application before the stress was more beneficial than the foliar spray after waterlogging. The foliar spray twice (before and after the stress) was slightly superior to the foliar spray before or after waterlogging stress. However, we concluded that the foliar spray of calcium nitrate, potassium nitrate and tricyclazole before or after the waterlogging stress was more applicable and cost efficient than the foliar application twice and are advisable to alleviate the flooding damage in canola.
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Claims 15
Claim · model-written summary
Waterlogging reduced canola leaf chlorophyll a, chlorophyll b and chlorophyll a/b ratio.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napuse0 - Organ / stage
- leavese0
- Treatment
- this stresse0
- Outcome
- content of chlorophyll a, chlorophyll b, chlorophyll a/b ratioe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The results showed that the content of chlorophyll a, chlorophyll b, chlorophyll a/b ratio and carotenoid in the leaves of canola were reduced after this stress”
Claim · model-written summary
Waterlogging reduced canola leaf carotenoid content.
- Taxon
- canolaBrassica napus var. napuse0
- Organ / stage
- leavese0
- Treatment
- this stresse0
- Outcome
- carotenoide0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the content of chlorophyll a, chlorophyll b, chlorophyll a/b ratio and carotenoid in the leaves of canola were reduced after this stress”
Claim · model-written summary
Flooding significantly decreased canola grain yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- flooding stresse0
- Outcome
- grain yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The flooding stress also significantly decreased the grain yield, number of siliques per plant, plant height, stem width, number of branches and branching position”
t0“canola”
Claim · model-written summary
Flooding significantly decreased canola silique number, height and stem width.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- flooding stresse0
- Outcome
- number of siliques per plant, plant height, stem widthe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The flooding stress also significantly decreased the grain yield, number of siliques per plant, plant height, stem width, number of branches and branching position”
t0“canola”
Claim · model-written summary
Flooding significantly decreased branch number and branching position in canola.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- flooding stresse0
- Outcome
- number of branches and branching positione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The flooding stress also significantly decreased the grain yield, number of siliques per plant, plant height, stem width, number of branches and branching position”
t0“canola”
Claim · model-written summary
Calcium nitrate foliar treatment increased canola leaf pigments under waterlogging.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- calcium nitratee0
- Outcome
- pigments content in the leavese0
- Direction
- highere0
- Comparator
- waterlogged controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher pigments content in the leaves, the increase in the number of siliques per plant (which was responsible for the significantly greater grain yield over the waterlogged control) and increase in other morphological characteristics were obtained by foliar application of calcium nitrate, potassium nitrate and tricyclazole”
t0“canola”
Claim · model-written summary
Potassium nitrate foliar treatment increased canola leaf pigments under waterlogging.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- potassium nitratee0
- Outcome
- pigments content in the leavese0
- Direction
- highere0
- Comparator
- waterlogged controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher pigments content in the leaves, the increase in the number of siliques per plant (which was responsible for the significantly greater grain yield over the waterlogged control) and increase in other morphological characteristics were obtained by foliar application of calcium nitrate, potassium nitrate and tricyclazole”
t0“canola”
Claim · model-written summary
Tricyclazole foliar treatment increased canola leaf pigments under waterlogging.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- tricyclazolee0
- Outcome
- pigments content in the leavese0
- Direction
- highere0
- Comparator
- waterlogged controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher pigments content in the leaves, the increase in the number of siliques per plant (which was responsible for the significantly greater grain yield over the waterlogged control) and increase in other morphological characteristics were obtained by foliar application of calcium nitrate, potassium nitrate and tricyclazole”
t0“canola”
Claim · model-written summary
Calcium nitrate increased canola silique number and grain yield over waterlogged controls.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- calcium nitratee0
- Outcome
- number of siliques per plante0
- Direction
- increasee0
- Comparator
- waterlogged controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in the number of siliques per plant (which was responsible for the significantly greater grain yield over the waterlogged control) and increase in other morphological characteristics were obtained by foliar application of calcium nitrate, potassium nitrate and tricyclazole”
t0“canola”
Claim · model-written summary
Potassium nitrate increased canola silique number and grain yield over waterlogged controls.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- potassium nitratee0
- Outcome
- number of siliques per plante0
- Direction
- increasee0
- Comparator
- waterlogged controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in the number of siliques per plant (which was responsible for the significantly greater grain yield over the waterlogged control) and increase in other morphological characteristics were obtained by foliar application of calcium nitrate, potassium nitrate and tricyclazole”
t0“canola”
Claim · model-written summary
Tricyclazole increased canola silique number and grain yield over waterlogged controls.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- tricyclazolee0
- Outcome
- number of siliques per plante0
- Direction
- increasee0
- Comparator
- waterlogged controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in the number of siliques per plant (which was responsible for the significantly greater grain yield over the waterlogged control) and increase in other morphological characteristics were obtained by foliar application of calcium nitrate, potassium nitrate and tricyclazole”
t0“canola”
Claim · model-written summary
Urea foliar spray produced a less significant increase in canola traits.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- foliar spray of ureae0
- Outcome
- these characteristicse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar spray of urea caused a less significant increase for these characteristics”
t0“canola”
Claim · model-written summary
Foliar application before waterlogging was more beneficial than application after waterlogging.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- foliar application before the stresse0
- Outcome
- more beneficiale0
- Direction
- more beneficiale0
- Comparator
- foliar spray after waterlogginge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar application before the stress was more beneficial than the foliar spray after waterlogging”
t0“canola”
Claim · model-written summary
Spraying before and after stress was slightly superior to spraying once.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- foliar spray twice (before and after the stress)e0
- Outcome
- slightly superiore0
- Direction
- slightly superiore0
- Comparator
- foliar spray before or after waterlogging stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar spray twice (before and after the stress) was slightly superior to the foliar spray before or after waterlogging stress”
t0“canola”
Claim · model-written summary
The authors recommend one foliar spray of calcium nitrate, potassium nitrate or tricyclazole before or after waterlogging as more practical and cost efficient than two sprays.
- Taxon
- canolaBrassica napus var. napuse0
- Outcome
- foliar spray of calcium nitrate, potassium nitrate and tricyclazole before or after the waterlogging stresse0
- Comparator
- foliar application twicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the foliar spray of calcium nitrate, potassium nitrate and tricyclazole before or after the waterlogging stress was more applicable and cost efficient than the foliar application twice and are advisable to alleviate the flooding damage in canola”
The same questions in other papers
tricyclazole · yield · Brassica napus (oilseed rape)Results agree
1 paper in the same direction as this paper
- positive
calcium nitrate · yield · Brassica napus (oilseed rape)Results agree
2 papers in the same direction as this paper
- positive
- positive
potassium nitrate · yield · Brassica napus (oilseed rape)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →flooding · yield · Brassica napus (oilseed rape)Results differ
15 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 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.