Abstract
Osmopriming has a positive effect on the enhancement of seeds germination and seedlings growth, especially under stress conditions. This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress. Seeds of five Moroccan alfalfa populations and an American Moapa variety were used to investigate the effect of osmopriming on seeds germination, seedlings growth, activities of antioxidant enzymes and membrane stability under two water deficit levels (-0.45 and -0.75 MPa). Seeds were primed with polyethylene glycol (PEG6000) (-0.6 MPa) for 24 h at 25 C. The results showed that treated seeds presented higher germination rate and growth of 8 d-old seedlings than untreated ones. Particularly, osmoprimed seeds of 'Adis-Tata' (Ad) and 'Riche' (Rc) populations presented the highest final germination percentages of 90.8% and 64%, respectively, and seedlings shoot and root lengths under both levels of water deficit. The priming treatment enhanced the activity of peroxidase (PO) and catalase (CAT) and reduced the malonyldialdehyde (MDA) content and the electrolyte leakage under water deficit. Generally, the success of germination was positively correlated to PO and CAT activities and the degree of membrane stability in drought tolerant populations. However, the positive effect of the osmopriming technique on alfalfa drought tolerance remains limited in some tested populations, and severe water stress could inhibit germination and cause damages of alfalfa seedlings.
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Claims 9
Claim · model-written summary
Osmoprimed alfalfa seeds had a higher germination rate than untreated seeds.
- Taxon
- Medicago sativa L.
Medicago sativae2 - Treatment
- osmopriming with polyethylene glycole2
- Outcome
- germination ratee1
- Direction
- highere1
- Comparator
- untreated onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that treated seeds presented higher germination rate and growth of 8 d-old seedlings than untreated ones”
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
Claim · model-written summary
Osmoprimed alfalfa seedlings had higher growth at 8 days than untreated seedlings.
- Taxon
- Medicago sativa L.Medicago sativae2
- Treatment
- osmopriming with polyethylene glycole2
- Outcome
- growth of 8 d-old seedlingse1
- Direction
- highere1
- Comparator
- untreated onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that treated seeds presented higher germination rate and growth of 8 d-old seedlings than untreated ones”
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
Claim · model-written summary
Osmoprimed seeds of the 'Adis-Tata' population had a final germination percentage of 90.8%.
- Taxon
- Medicago sativa L.Medicago sativae2
- Material
- 'Adis-Tata' (Ad)e3
- Treatment
- osmoprimed seedse3
- Outcome
- final germination percentagese3
- Direction
- higheste3
- Value
- 90.8%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
e3“osmoprimed seeds of 'Adis-Tata' (Ad) and 'Riche' (Rc) populations presented the highest final germination percentages of 90.8% and 64%, respectively”
Claim · model-written summary
Osmoprimed seeds of the 'Riche' population had a final germination percentage of 64%.
- Taxon
- Medicago sativa L.Medicago sativae2
- Material
- 'Riche' (Rc)e3
- Treatment
- osmoprimed seedse3
- Outcome
- final germination percentagese3
- Direction
- higheste3
- Value
- 64%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
e3“osmoprimed seeds of 'Adis-Tata' (Ad) and 'Riche' (Rc) populations presented the highest final germination percentages of 90.8% and 64%, respectively”
Claim · model-written summary
Priming enhanced peroxidase and catalase activity of alfalfa under water deficit.
- Taxon
- Medicago sativa L.Medicago sativae2
- Treatment
- The priming treatmente4
- Outcome
- activity of peroxidase (PO) and catalase (CAT)e4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
e4“The priming treatment enhanced the activity of peroxidase (PO) and catalase (CAT) and reduced the malonyldialdehyde (MDA) content and the electrolyte leakage under water deficit”
Claim · model-written summary
Priming reduced malonyldialdehyde content and electrolyte leakage of alfalfa under water deficit.
- Taxon
- Medicago sativa L.Medicago sativae2
- Treatment
- The priming treatmente4
- Outcome
- malonyldialdehyde (MDA) content and the electrolyte leakagee4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
e4“The priming treatment enhanced the activity of peroxidase (PO) and catalase (CAT) and reduced the malonyldialdehyde (MDA) content and the electrolyte leakage under water deficit”
Claim · model-written summary
Germination success of alfalfa was positively correlated with peroxidase and catalase activities and membrane stability in drought-tolerant populations.
- Taxon
- Medicago sativa L.Medicago sativae2
- Material
- drought tolerant populationse5
- Outcome
- success of germinatione5
- Direction
- positively correlatede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
e5“Generally, the success of germination was positively correlated to PO and CAT activities and the degree of membrane stability in drought tolerant populations”
Claim · model-written summary
Severe water stress could inhibit germination and damage seedlings of alfalfa.
- Taxon
- Medicago sativa L.Medicago sativae2
- Treatment
- severe water stresse6
- Outcome
- germinatione6
- Direction
- inhibite6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
e6“severe water stress could inhibit germination and cause damages of alfalfa seedlings”
Claim · model-written summary
The positive effect of osmopriming on alfalfa drought tolerance remains limited in some tested populations.
- Taxon
- Medicago sativa L.Medicago sativae2
- Treatment
- osmopriming techniquee7
- Outcome
- alfalfa drought tolerancee7
- Direction
- remains limitede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress”
e7“However, the positive effect of the osmopriming technique on alfalfa drought tolerance remains limited in some tested populations”
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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.