Abstract
The effects of osmotic priming on germination and vigour of wildrye seeds treated with polyethylene glycol 6000 (PEG 6000) in different priming osmotic potentials and time durations were discussed in this paper. The results revealed that the germination rate and vigour index of wildrye seed pretreated with PEG increased obviously, whereas the conductivity rate decreased comparing to the control. During germination period, although the respiratory intensity of wildrye seeds pretreated with 30% PEG for 24 h was lower at beginning, it increased rapidly soon afterward; the content of O 2 decreased visibly but the activity both of superoxide dismutase (SOD) and peroxidase (POD) increased. The accumulation of malondialdehyde (MDA) was much lower than that of control. Consequently, it suggested that there was some interacting relationship between the increasing of vigour index through pretreatment with PEG and the increasing of activity oxygen metabolism.
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Claims 6
Claim · model-written summary
PEG priming raised wildrye germination rate and vigour index.
ElymusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the germination rate and vigour index of wildrye seed pretreated with PEG increased obviously”
e1“comparing to the control”
Claim · model-written summary
PEG priming lowered conductivity rate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas the conductivity rate decreased comparing to the control”
t0“wildrye”
e1“wildrye seed pretreated with PEG”
Claim · model-written summary
PEG pretreatment lowered early respiratory intensity then it rose rapidly.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the respiratory intensity of wildrye seeds pretreated with 30% PEG for 24 h was lower at beginning, it increased rapidly soon afterward”
Claim · model-written summary
PEG pretreatment reduced O 2 content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of O 2 decreased visibly”
t0“wildrye”
e1“wildrye seed pretreated with PEG”
Claim · model-written summary
PEG pretreatment increased SOD and POD activity.
- Treatment
- PEGe1
- Outcome
- activity both of superoxide dismutase (SOD) and peroxidase (POD)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity both of superoxide dismutase (SOD) and peroxidase (POD) increased”
t0“wildrye”
e1“wildrye seed pretreated with PEG”
Claim · model-written summary
PEG pretreatment reduced MDA accumulation relative to control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulation of malondialdehyde (MDA) was much lower than that of control”
t0“wildrye”
e1“wildrye seed pretreated with PEG”
The same questions in other papers
drought · physiology: oxidative · Elymus (wild rye)Positive and negative results
1 in the opposite direction
- negative
drought · growth · Elymus (wild rye)Positive and negative results
2 in the opposite direction
- negative
- negative
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.