Abstract
[Objective] The aim was to research the effects of Se treatments at different concn.on heavy metal-resistance of Brassica napus under compound pollution of Cd and Pb.[Method] With B.napus variety Qianyou18 as tested material,the effects of Se on heavy metal-resistance of B.napus under compound pollution of Cd and Pb were researched through seed germination experiment and seedling growth experiment.[Result] The effects of Se on B.napus growth under Cd and Pb stress were as follows:Se at low concn.promoted B.napus growth and Se at high concn.inhibited B.napus growth.The effect of Se on the activity index of B.napus seeds under Cd and Pb stress was most and that on CAT activity and soluble sugar content was secondary.In a certain concn.range(lower than 10 mg/L),Se could enhance SOD and POD activities and Pro content in B.napus under Cd and Pb stress.Se at low concn.enhanced the heavy metal-resistance of B.napus and Se at high concn.weakened its heavy metal-resistance.Se at low concn.reduced the stress from Cd and Pb on chlorophyll in B.napus and Se at high concn.aggravated this stress.[Conclusion] Se at low concn.could relieve the hazard of heavy metal pollution on B.napus to some degree.
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Claims 8
Claim · model-written summary
Low Se concentration promoted growth under Cd and Pb stress.
- Taxon
- B.napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Treatment
- Se at low concn.e0
- Outcome
- growthe0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Se at low concn.promoted B.napus growth”
Claim · model-written summary
High Se concentration inhibited growth under Cd and Pb stress.
- Taxon
- B.napusBrassica napuse0
- Treatment
- Se at high concn.e0
- Outcome
- growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Se at high concn.inhibited B.napus growth”
Claim · model-written summary
Se affected seed activity index most and CAT activity and soluble sugar secondarily.
- Taxon
- B.napusBrassica napuse0
- Treatment
- See0
- Outcome
- activity index of B.napus seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of Se on the activity index of B.napus seeds under Cd and Pb stress was most and that on CAT activity and soluble sugar content was secondary”
Claim · model-written summary
Se below 10 mg/L enhanced SOD and POD activities and Pro content.
- Taxon
- B.napusBrassica napuse0
- Treatment
- See0
- Outcome
- SOD and POD activities and Pro contente0
- Direction
- enhancee0
- Qualifier
- lower than 10 mg/Le0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a certain concn.range(lower than 10 mg/L),Se could enhance SOD and POD activities and Pro content in B.napus under Cd and Pb stress”
Claim · model-written summary
Low Se concentration enhanced heavy metal resistance.
- Taxon
- B.napusBrassica napuse0
- Treatment
- Se at low concn.e0
- Outcome
- heavy metal-resistancee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Se at low concn.enhanced the heavy metal-resistance of B.napus”
Claim · model-written summary
High Se concentration weakened heavy metal resistance.
- Taxon
- B.napusBrassica napuse1
- Treatment
- Se at high concn.e0
- Outcome
- heavy metal-resistancee0
- Direction
- weakenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Se at high concn.weakened its heavy metal-resistance”
t0“Brassica napus”
e1“Se at low concn.promoted B.napus growth”
Claim · model-written summary
Low Se concentration reduced Cd and Pb stress on chlorophyll.
- Taxon
- B.napusBrassica napuse0
- Treatment
- Se at low concn.e0
- Outcome
- stress from Cd and Pb on chlorophylle0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Se at low concn.reduced the stress from Cd and Pb on chlorophyll in B.napus”
Claim · model-written summary
High Se concentration aggravated Cd and Pb stress on chlorophyll.
- Taxon
- B.napusBrassica napuse1
- Treatment
- Se at high concn.e0
- Outcome
- stresse0
- Direction
- aggravatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Se at high concn.aggravated this stress”
t0“Brassica napus”
e1“Se at low concn.promoted B.napus growth”
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See all 5 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.