Abstract
In order to investigate the effect of priming on canola seed performance under drought stress a study was carried out at the Seed Research Laboratory of Razi University, Kermanshah, Iran. The experiment was a factorial with three factors arranged in a completely randomized design with three replications. The first factor was seed priming (control (untreated), KNO and distilled water), the second was drought stress levels (0.0, -0.3, 3 -0.6, -0.9, -1.2 and -1.5 MPa) and the third was canola cultivars (Okapi and Talayeh). Results indicated that for both cultivars germination percentage (GP), mean germination rate (MGR), radicle length (RL), plumule length (PL) and seedling dry weight (SDW) were reduced when drought stress level were increased from 0 to -1.5 MPa. Although, the cultivars showed different responses to the increased drought stress level. For all of the traits under study, the best results due to the priming treatments were obtained at the drought stress levels higher than -0.6 or -0.9 MPa. So that, at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control. However, seeds primed with KNO showed better performance 3 than those primed with distilled water. In general, this study revealed that seed priming especially with KNO3 improved canola seed performance under drought stress condition. However, the improvements were more obvious at the higher levels of drought stress.
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Claims 19
Claim · model-written summary
germination percentage (GP) declined as drought stress increased from 0 to -1.5 MPa in both canola cultivars.
- Taxon
- Canola
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Brassica napus var. napust0 - Treatment
- drought stress levele0
- Outcome
- germination percentage (GP)e0
- Direction
- reducede0
- Value
- -1.5 MPae0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“for both cultivars germination percentage (GP), mean germination rate (MGR), radicle length (RL), plumule length (PL) and seedling dry weight (SDW) were reduced when drought stress level were increased from 0 to -1.5 MPa.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
mean germination rate (MGR) declined as drought stress increased from 0 to -1.5 MPa in both canola cultivars.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- drought stress levele0
- Outcome
- mean germination rate (MGR)e0
- Direction
- reducede0
- Value
- -1.5 MPae0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for both cultivars germination percentage (GP), mean germination rate (MGR), radicle length (RL), plumule length (PL) and seedling dry weight (SDW) were reduced when drought stress level were increased from 0 to -1.5 MPa.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
radicle length (RL) declined as drought stress increased from 0 to -1.5 MPa in both canola cultivars.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- drought stress levele0
- Outcome
- radicle length (RL)e0
- Direction
- reducede0
- Value
- -1.5 MPae0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for both cultivars germination percentage (GP), mean germination rate (MGR), radicle length (RL), plumule length (PL) and seedling dry weight (SDW) were reduced when drought stress level were increased from 0 to -1.5 MPa.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
plumule length (PL) declined as drought stress increased from 0 to -1.5 MPa in both canola cultivars.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- drought stress levele0
- Outcome
- plumule length (PL)e0
- Direction
- reducede0
- Value
- -1.5 MPae0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for both cultivars germination percentage (GP), mean germination rate (MGR), radicle length (RL), plumule length (PL) and seedling dry weight (SDW) were reduced when drought stress level were increased from 0 to -1.5 MPa.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
seedling dry weight (SDW) declined as drought stress increased from 0 to -1.5 MPa in both canola cultivars.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- drought stress levele0
- Outcome
- seedling dry weight (SDW)e0
- Direction
- reducede0
- Value
- -1.5 MPae0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for both cultivars germination percentage (GP), mean germination rate (MGR), radicle length (RL), plumule length (PL) and seedling dry weight (SDW) were reduced when drought stress level were increased from 0 to -1.5 MPa.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
Okapi and Talayeh responded differently to increased drought stress.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- different responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cultivars showed different responses to the increased drought stress level.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
The best priming results for all studied traits occurred at drought stress above -0.6 or -0.9 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- best resultse0
- Qualifier
- drought stress levels higher than -0.6 or -0.9 MPae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For all of the traits under study, the best results due to the priming treatments were obtained at the drought stress levels higher than -0.6 or -0.9 MPa.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
KNO priming improved GP by 128.62 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- KNOe0
- Outcome
- GPe0
- Direction
- improvede0
- Value
- 128.62e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
KNO priming improved MGR by 200 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- KNOe0
- Outcome
- MGRe0
- Direction
- improvede0
- Value
- 200e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
KNO priming improved RL by 223.08 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- KNOe0
- Outcome
- RLe0
- Direction
- improvede0
- Value
- 223.08e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
KNO priming improved PL by 350 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- KNOe0
- Outcome
- PLe0
- Direction
- improvede0
- Value
- 350e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
KNO priming improved SDW by 69.94% versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- KNOe0
- Outcome
- SDWe0
- Direction
- improvede0
- Value
- 69.94%e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
Distilled water priming improved GP by 21.44 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- distilled watere0
- Outcome
- GPe0
- Direction
- improvede0
- Value
- 21.44e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
Distilled water priming improved MGR by 71.43 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- distilled watere0
- Outcome
- MGRe0
- Direction
- improvede0
- Value
- 71.43e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
Distilled water priming improved RL by 219.23 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- distilled watere0
- Outcome
- RLe0
- Direction
- improvede0
- Value
- 219.23e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
Distilled water priming improved PL by 100 versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- distilled watere0
- Outcome
- PLe0
- Direction
- improvede0
- Value
- 100e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
Distilled water priming improved SDW by 41.18% versus control at -1.5 MPa.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- distilled watere0
- Outcome
- SDWe0
- Direction
- improvede0
- Value
- 41.18%e0
- Qualifier
- -1.5 MPae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the -1.5 MPa of drought stress level, GP, MGR, RL, PL and SDW were improved 128.62, 200, 223.08, 350 and 69.94%, respectively by KNO and 21.44, 71.43, 219.23, 100 and 41.18%, respectively 3 by distilled water when compared with control.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
KNO primed seeds performed better than distilled-water primed seeds.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- KNOe0
- Outcome
- performancee0
- Direction
- bettere0
- Comparator
- distilled watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds primed with KNO showed better performance 3 than those primed with distilled water.”
t0“Canola (Brassica napus L.)”
Claim · model-written summary
Seed priming, especially with KNO3, improved canola seed performance under drought stress, more obviously at higher stress.
- Taxon
- canolaBrassica napus var. napuse0
- Outcome
- canola seed performancee0
- Direction
- improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed priming especially with KNO3 improved canola seed performance under drought stress condition. However, the improvements were more obvious at the higher levels of drought stress.”