Abstract
Pot experiment was conducted to investigate the influences of continuous waterlogging stress on roots morphology and physiological activities of rapeseed seedlings(Brassica napus L.cv Zhongshuang 9 and Zhongyouza 12).Results showed that,during the first five days of waterlogging,the rate of superoxide radical(O2·-) production and superoxide dismutase(SOD) activity were both significantly increased.Malondialdehyde(MDA) content caused by O2·-accumulation was not significantly increased,and roots dry weight and morphological parameters had no significant change compared to CK.The rate of O2·-production accelerated 5d after waterlogging,and MDA content increased significantly.SOD and catalase(CAT) activities were significantly decreased,which resulted in significant decrease of roots dry weights and significant changes of roots morphological parameters,including decrease of surface area,volume,total root length and taproot length,significant increase of average root diameter,and significant decrease of the number of fibrous roots.
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Claims 8
Claim · model-written summary
During the first five days of waterlogging, superoxide radical production increased significantly.
Not reportedTaxon
Verbatim
e0“during the first five days of waterlogging,the rate of superoxide radical(O2·-) production and superoxide dismutase(SOD) activity were both significantly increased.”
Claim · model-written summary
During the first five days of waterlogging, superoxide dismutase activity increased significantly.
Not reportedTaxon
Verbatim
e0“during the first five days of waterlogging,the rate of superoxide radical(O2·-) production and superoxide dismutase(SOD) activity were both significantly increased.”
Claim · model-written summary
During the first five days, malondialdehyde content did not increase significantly.
- Outcome
- Malondialdehyde(MDA) contente0
Not reportedTaxon
Verbatim
e0“Malondialdehyde(MDA) content caused by O2·-accumulation was not significantly increased”
Claim · model-written summary
During the first five days, root dry weight and morphological parameters showed no significant change from CK.
- Outcome
- roots dry weight and morphological parameterse0
Not reportedTaxon
Verbatim
e0“roots dry weight and morphological parameters had no significant change compared to CK.”
Claim · model-written summary
After five days of waterlogging, superoxide production accelerated and malondialdehyde content increased significantly.
Not reportedTaxon
Verbatim
e0“The rate of O2·-production accelerated 5d after waterlogging,and MDA content increased significantly.”
Claim · model-written summary
After five days of waterlogging, SOD and CAT activities decreased significantly.
Not reportedTaxon
Verbatim
e0“SOD and catalase(CAT) activities were significantly decreased”
Claim · model-written summary
After five days of waterlogging, root dry weight decreased significantly.
Not reportedTaxon
Verbatim
e0“significant decrease of roots dry weights”
Claim · model-written summary
After prolonged waterlogging, root surface area, volume, total root length and taproot length decreased, while root diameter increased and fibrous root number decreased.
- Outcome
- surface area,volume,total root length and taproot lengthe0
Not reportedTaxon
Verbatim
e0“decrease of surface area,volume,total root length and taproot length,significant increase of average root diameter,and significant decrease of the number of fibrous roots.”