Abstract
In order to provide guidance for reasonable nitrogen(N) fertilizer application of rapeseed(Brassica napus L.) under high CO2concentration in atmosphere,create parameters with high yield and efficiency,and supply theoretical basis for further investigate of N metabolism regulation mechanisms.Micro-plot experiment was conducted with 2 rapeseed genotypes(Huyou15-33 and 742-2)and 2 CO2concentrations(normal:400 μmol·mol-1,high:(800±20) μmol·mol-1) under 2 different N application levels(N application,no N),study on the changes of NR and GS activities,soluble protein content and the response of shoot dry weight and accumulation amount of N to CO2concentrations.Results show that NR and GS activities are increased in high CO2concentration treatment;NR activity is closely relate to reapeseed genotypes and growth stages.Enzymes activities of A genotype in N application treatment are higher than no N application treatment under high CO2concentration condition;enzymes activities of B genotype in N application treatment are lower than no N application treatment only at the elongation stage,expressed reverse changes at others growth stages;GS activity is increased under N application condition with normal CO2concentration,decreased in high CO2concentration treatment(accept seedling stage).Content of soluble protein in leaves is decreased under high CO2concentration condition(except flowering stage);high N fertilizer application can increase the soluble protein content in leaves under normal CO2concentration condition,while the reverse situation of soluble protein content in leaves is expressed in high CO2concentration treatment.Shoot dry weight and N accumulation amount are increased under high CO2concentration and high N application conditions,dry biomass and N accumulation amount in rapeseed are generally significant correlated with the above physiological parameters.
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Claims 11
Claim · model-written summary
Rapeseed NR and GS activities increased under high CO2concentration treatment.
- Taxon
- rapeseede0
- Treatment
- high CO2concentration treatmente1
- Outcome
- NR and GS activitiese1
- Direction
- increasede1
Not reportedComparator
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“NR and GS activities are increased in high CO2concentration treatment”
Claim · model-written summary
Rapeseed Enzymes activities of A genotype higher under N application treatment.
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“Enzymes activities of A genotype in N application treatment are higher than no N application treatment under high CO2concentration condition”
Claim · model-written summary
Rapeseed enzymes activities of B genotype lower under N application treatment.
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“enzymes activities of B genotype in N application treatment are lower than no N application treatment only at the elongation stage”
Claim · model-written summary
Rapeseed enzymes activities of B genotype reverse changes under N application treatment.
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“expressed reverse changes at others growth stages”
e2“enzymes activities of B genotype in N application treatment are lower than no N application treatment only at the elongation stage”
Claim · model-written summary
Rapeseed GS activity increased under N application condition.
Not reportedComparator
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“GS activity is increased under N application condition with normal CO2concentration”
Claim · model-written summary
Rapeseed GS activity decreased under high CO2concentration treatment.
Not reportedComparator
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“decreased in high CO2concentration treatment(accept seedling stage)”
e2“GS activity is increased under N application condition with normal CO2concentration”
Claim · model-written summary
Rapeseed Content of soluble protein in leaves decreased under high CO2concentration condition.
- Taxon
- rapeseede0
- Treatment
- high CO2concentration conditione1
- Outcome
- Content of soluble protein in leavese1
- Direction
- decreasede1
Not reportedComparator
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“Content of soluble protein in leaves is decreased under high CO2concentration condition(except flowering stage)”
Claim · model-written summary
Rapeseed soluble protein content in leaves increase under high N fertilizer application.
- Taxon
- rapeseede0
- Treatment
- high N fertilizer applicatione1
- Outcome
- soluble protein content in leavese1
- Direction
- increasee1
Not reportedComparator
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“high N fertilizer application can increase the soluble protein content in leaves under normal CO2concentration condition”
Claim · model-written summary
Rapeseed soluble protein content in leaves reverse situation under high CO2concentration treatment.
- Taxon
- rapeseede0
- Treatment
- high CO2concentration treatmente1
- Outcome
- soluble protein content in leavese1
- Direction
- reverse situatione1
Not reportedComparator
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“the reverse situation of soluble protein content in leaves is expressed in high CO2concentration treatment”
Claim · model-written summary
Rapeseed Shoot dry weight and N accumulation amount increased under high CO2concentration and high N application conditions.
- Taxon
- rapeseede0
- Treatment
- high CO2concentration and high N application conditionse1
- Outcome
- Shoot dry weight and N accumulation amounte1
- Direction
- increasede1
Not reportedComparator
Verbatim
e0“rapeseed(Brassica napus L.)”
e1“Shoot dry weight and N accumulation amount are increased under high CO2concentration and high N application conditions”
Claim · model-written summary
Dry biomass and N accumulation were significantly correlated with physiological parameters.
- Taxon
- rapeseede1
- Outcome
- dry biomass and N accumulation amounte1
- Qualifier
- significant correlated with the above physiological parameterse1
Not reportedOrgan / stageDirection
Verbatim
e1“dry biomass and N accumulation amount in rapeseed are generally significant correlated with the above physiological parameters.”
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