Abstract
This research was conducted for the determination of effects of salinity stress on water uptake of seed, germination and early seedling development of perennial ryegrass (Lolium perenne L. cv. Ovation) in the seed laboratory of Field Crops, Department of Agricultural Faculty of Namik Kemal University, Tekirdag, Turkey, 2009. In this study, eight different sodium chloride (NaCl) levels, including electrical conductivities of 0, 2, 4, 8, 12, 16, 20 and 24 dS m-1 were used as salinity treatments. Seeds were germinated at 25 ± 1°C for 14 days in a growth chamber. Water uptake of seeds during germination period were measured at 3, 6, 12, 24, 36, 48 and 72 h. Germination rate and some morphological and physiological characters were determinated on the 14th day after germination. Dry weights were measured after samples had been dried at 70°C for 48 h in an oven. The results showed that water uptake of seed, germination rate, and mean germination time of perennial ryegrass were affected by different salinity levels during germination period. Likewise, root and shoot length, coleoptiles length, leaf number, fresh and dry weights of root and shoot of perennial ryegrass seedling were also affected from different salinity application, but root number did not change statictically in different NaCl concentrations. While mean germination time increased with increasing salinity, germination rate decreased. Increasing NaCl concentration caused a significant reduction in root length, coleoptiles length, shoot length, and leaf number. Fresh and dry weight of root and shoot decreased significantly over 8 dS m-1 NaCl concentrations during the germination period. In conclusion, it can be said that perennial ryegrass has tolerance up to 8 dS m-1 salinity level at the germination and seedling growth stages. Key words: Ryegrass, Lolium perenne L., salinity stress, water uptake, seedling growth.
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Claims 8
Claim · model-written summary
Different salinity levels affected seed water uptake during germination of perennial ryegrass.
- Taxon
- perennial ryegrass
Lolium perennee0 - Material
- cv. Ovatione0
- Treatment
- different salinity levelse2
- Outcome
- water uptake of seede2
- Setting
- growth chambere1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perennial ryegrass (Lolium perenne L. cv. Ovation)”
e1“Seeds were germinated at 25 ± 1°C for 14 days in a growth chamber”
e2“water uptake of seed, germination rate, and mean germination time of perennial ryegrass were affected by different salinity levels during germination period”
Claim · model-written summary
Mean germination time of perennial ryegrass increased with increasing salinity.
- Taxon
- perennial ryegrassLolium perennee0
- Material
- cv. Ovatione0
- Treatment
- increasing salinitye3
- Outcome
- mean germination timee3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perennial ryegrass (Lolium perenne L. cv. Ovation)”
e3“While mean germination time increased with increasing salinity, germination rate decreased”
Claim · model-written summary
Germination rate of perennial ryegrass decreased with increasing salinity.
- Taxon
- perennial ryegrassLolium perennee0
- Material
- cv. Ovatione0
- Treatment
- increasing salinitye3
- Outcome
- germination ratee3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perennial ryegrass (Lolium perenne L. cv. Ovation)”
e3“While mean germination time increased with increasing salinity, germination rate decreased”
Claim · model-written summary
Increasing NaCl concentration significantly reduced root length, coleoptiles length and shoot length of perennial ryegrass seedlings.
- Taxon
- perennial ryegrassLolium perennee0
- Material
- cv. Ovatione0
- Treatment
- Increasing NaCl concentratione4
- Outcome
- root length, coleoptiles length, shoot lengthe4
- Direction
- reductione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perennial ryegrass (Lolium perenne L. cv. Ovation)”
e4“Increasing NaCl concentration caused a significant reduction in root length, coleoptiles length, shoot length, and leaf number”
Claim · model-written summary
Increasing NaCl concentration significantly reduced leaf number of perennial ryegrass seedlings.
- Taxon
- perennial ryegrassLolium perennee0
- Material
- cv. Ovatione0
- Treatment
- Increasing NaCl concentratione4
- Outcome
- leaf numbere4
- Direction
- reductione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perennial ryegrass (Lolium perenne L. cv. Ovation)”
e4“Increasing NaCl concentration caused a significant reduction in root length, coleoptiles length, shoot length, and leaf number”
Claim · model-written summary
Root number of perennial ryegrass seedlings did not change across NaCl concentrations.
- Taxon
- perennial ryegrassLolium perennee0
- Material
- cv. Ovatione0
- Treatment
- different NaCl concentrationse5
- Outcome
- root numbere5
- Direction
- did not changee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perennial ryegrass (Lolium perenne L. cv. Ovation)”
e5“root number did not change statictically in different NaCl concentrations”
Claim · model-written summary
Fresh and dry weight of root and shoot decreased significantly above 8 dS m-1 NaCl during germination.
- Taxon
- perennial ryegrassLolium perennee0
- Material
- cv. Ovatione0
- Treatment
- over 8 dS m-1 NaCl concentrationse6
- Outcome
- Fresh and dry weight of root and shoote6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perennial ryegrass (Lolium perenne L. cv. Ovation)”
e6“Fresh and dry weight of root and shoot decreased significantly over 8 dS m-1 NaCl concentrations during the germination period”
Claim · model-written summary
Perennial ryegrass has tolerance up to 8 dS m-1 salinity at the germination and seedling growth stages.
- Taxon
- perennial ryegrassLolium perennee7
- Organ / stage
- germination and seedling growth stagese7
- Outcome
- tolerancee7
- Value
- 8 dS m-1e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“perennial ryegrass has tolerance up to 8 dS m-1 salinity level at the germination and seedling growth stages”
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See all 17 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.