Abstract
A split-plot experiment arranged in a randomized complete blocks design with three replications was carried out in Safiabad Agricultural Research Center of Dezful in order to investigate the effects of foliar applications of ascorbic acid (AsA), salicylic acid (SA) and methanol (Me), under deficit irrigation conditions, in canola; there were 3 levels of irrigation as the main factor (irrigation after 70 mm evaporation from the pan as control, cessation of irrigation at the flowering stage and cessation of irrigation at the appearance of siliques) and 10 levels of foliar applications as sub-factor (100, 200 and 300 mg.l-1AsA; 100, 200 and 300 µM SA; 10, 20 and 30% (w/v) methanol; and foliar application of distilled water as control). Foliar applications were made during both budding and initiation of flowering stages. Results indicated that antioxidant enzymes showed different responses to deficit irrigation and foliar application treatments. Maximum catalase (CAT) and polyphenol oxidase (PPO) activities were observed under cessation of irrigation at flowering stage and foliar application of 300 µM SA, while ascorbate peroxidase (APX) reached its maximum activity under the same irrigation conditions and foliar application of 300 mg.l-1AsA. SA had more influence to increase in CAT and PPO activity under cessation of irrigation at flowering stage. The relative water content (RWC) was also decreased due to the drought stress caused by the cessation of irrigation. Foliar application of SA (100 μM) and Me (10% w/v) had more influence to maintain RWC compared to ascorbic acid under irrigation cessation at flowering stage.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
Ascorbate peroxidase activity reached its maximum under irrigation cessation at flowering and 300 mg.l-1 ascorbic acid.
- Taxon
- Canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- foliar application of 300 mg.l-1AsAe0
- Outcome
- ascorbate peroxidase (APX)e0
- Direction
- maximume0
- Qualifier
- cessation of irrigation at flowering stagee1
- Comparator
- irrigation after 70 mm evaporation from the pan as controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“ascorbate peroxidase (APX) reached its maximum activity under the same irrigation conditions and foliar application of 300 mg.l-1AsA”
e1“cessation of irrigation at flowering stage and foliar application of 300 µM SA”
e2“irrigation after 70 mm evaporation from the pan as control”
t0“Canola”
Claim · model-written summary
Salicylic acid at 100 μM maintained relative water content better than ascorbic acid under irrigation cessation at flowering.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- SA (100 μM)e0
- Outcome
- RWCe0
- Direction
- more influence to maintaine0
- Qualifier
- irrigation cessation at flowering stagee0
- Comparator
- ascorbic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of SA (100 μM) and Me (10% w/v) had more influence to maintain RWC compared to ascorbic acid under irrigation cessation at flowering stage”
t0“Canola”
Claim · model-written summary
Methanol at 10% w/v maintained relative water content better than ascorbic acid under irrigation cessation at flowering.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- Me (10% w/v)e0
- Outcome
- RWCe0
- Direction
- more influence to maintaine0
- Qualifier
- irrigation cessation at flowering stagee0
- Comparator
- ascorbic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of SA (100 μM) and Me (10% w/v) had more influence to maintain RWC compared to ascorbic acid under irrigation cessation at flowering stage”
t0“Canola”
The same questions in other papers
salicylic acid · physiology: water · Brassica napus (oilseed rape)Results agree
2 papers in the same direction as this paper
- positive
- positive
application · physiology: antioxidant enzymes · Brassica napus (oilseed rape)Results agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 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.