Abstract
Effects of different degrees of drought stress on seed germination and seedling physiological characteristics of cowpea( Vigna unguiculata W. ssp. sesquipedalis( L.) Verd.) were investigated using different mass fractions of PEG( 0,50,100,150,200,250,300 g / L) simulated drought stress. The results indicated that the germination rate,germination potential,germination index,bud length,root length and number of lateral roots all showed the trend of decrease with the increase of mass fraction of PEG. The activity of SOD and POD in the seedlings increased when PEG mass fraction used was lower than 150 g / L,but decreased when PEG mass fraction used was higher than 150 g / L. However,the MDA content in the seedlings increased gradually with the increase of mass fraction of PEG. The results show that the higher the degree of drought stress,the higher inhibition on seed germination and seedling growth or more sever damage on cell membrane.
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Claims 6
Claim · model-written summary
Germination rate, potential, and index decreased with increasing PEG concentration.
- Taxon
- Cowpea
Vigna unguiculatat0 - Treatment
- mass fraction of PEGe0
- Outcome
- germination rate,germination potential,germination indexe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“the germination rate,germination potential,germination index,bud length,root length and number of lateral roots all showed the trend of decrease with the increase of mass fraction of PEG”
Claim · model-written summary
Bud length, root length, and lateral root number decreased with increasing PEG concentration.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- mass fraction of PEGe0
- Outcome
- bud length,root length and number of lateral rootse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“bud length,root length and number of lateral roots all showed the trend of decrease with the increase of mass fraction of PEG”
Claim · model-written summary
SOD and POD activity increased below 150 g / L PEG.
- Taxon
- CowpeaVigna unguiculatat0
- Organ / stage
- seedlingse0
- Treatment
- PEG mass fraction used was lower than 150 g / Le0
- Outcome
- activity of SOD and PODe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“The activity of SOD and POD in the seedlings increased when PEG mass fraction used was lower than 150 g / L”
Claim · model-written summary
SOD and POD activity decreased above 150 g / L PEG.
- Taxon
- CowpeaVigna unguiculatat0
- Organ / stage
- seedlingse0
- Treatment
- PEG mass fraction used was higher than 150 g / Le0
- Outcome
- activity of SOD and PODe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“The activity of SOD and POD in the seedlings increased when PEG mass fraction used was lower than 150 g / L,but decreased when PEG mass fraction used was higher than 150 g / L”
Claim · model-written summary
Seedling MDA content rose with PEG concentration.
- Taxon
- CowpeaVigna unguiculatat0
- Organ / stage
- seedlingse0
- Treatment
- mass fraction of PEGe0
- Outcome
- MDA contente0
- Direction
- increased graduallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“the MDA content in the seedlings increased gradually with the increase of mass fraction of PEG”
Claim · model-written summary
Higher drought stress was interpreted to inhibit germination and growth more and damage cell membranes more severely.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- degree of drought stresse0
- Outcome
- inhibition on seed germination and seedling growth or more sever damage on cell membranee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“the higher the degree of drought stress,the higher inhibition on seed germination and seedling growth or more sever damage on cell membrane”
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See all 8 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.