Abstract
The study was carried out to investigate the effects of halopriming on germination, seedling growth and biochemical responses of tomato seeds. Priming was done by exposing seeds of two tomato cultivars ‘Nagina’ and ‘Pakit’ to aerated solutions of 10, 25 and 50 mM NaCl and KNO3 for 24 h. Halopriming with 25 mM KNO3 increased final germination percentage, germination index, root length, shoot length and seedling fresh weight of both tomato cultivars as compared to all presowing seed treatments including control. Seeds of both tomato cultivars primed with 25 mM KNO3 for 24 h, significantly reduced the time taken to 50% emergence and mean emergence, increased final seedling emergence percentage and seedling growth. Results indicated that halopriming with varying concentrations of KNO3 improved germination potential and seedling establishment of both cultivars and it proved better option than NaCl which resulted in poor emergence and seedling growth. Maximum improvement was recorded in seeds primed with 25 mM KNO3. The better performance of haloprimed seeds may be due to lower electrical conductivity (EC) of seed leachates, higher total and reducing sugars along with increased α-amylase activity. Key words: Seed dormancy, α-amylase, halopriming, electrical conductivity, reducing sugars.
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Claims 8
Claim · model-written summary
Priming with 25 mM KNO3 increased final germination percentage and germination index in both cultivars.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- 25 mM KNO3e0
- Outcome
- final germination percentage, germination indexe0
- Direction
- increasede0
- Comparator
- all presowing seed treatments including controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Halopriming with 25 mM KNO3 increased final germination percentage, germination index, root length, shoot length and seedling fresh weight of both tomato cultivars as compared to all presowing seed treatments including control.”
e1“tomato seeds”
e2“Halopriming with 25 mM KNO3 increased final germination percentage”
Claim · model-written summary
Priming with 25 mM KNO3 increased root length, shoot length and seedling fresh weight.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- 25 mM KNO3e0
- Outcome
- root length, shoot length and seedling fresh weighte0
- Direction
- increasede0
- Comparator
- all presowing seed treatments including controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Halopriming with 25 mM KNO3 increased final germination percentage, germination index, root length, shoot length and seedling fresh weight of both tomato cultivars as compared to all presowing seed treatments including control.”
e1“tomato seeds”
e2“Halopriming with 25 mM KNO3 increased final germination percentage”
Claim · model-written summary
Priming with 25 mM KNO3 reduced time to 50% and mean emergence significantly.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- 25 mM KNO3 for 24 he0
- Outcome
- time taken to 50% emergence and mean emergencee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of both tomato cultivars primed with 25 mM KNO3 for 24 h, significantly reduced the time taken to 50% emergence and mean emergence”
e1“tomato seeds”
Claim · model-written summary
Priming with 25 mM KNO3 increased final seedling emergence and seedling growth.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 25 mM KNO3e2
- Outcome
- final seedling emergence percentage and seedling growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased final seedling emergence percentage and seedling growth.”
e1“tomato seeds”
e2“Halopriming with 25 mM KNO3 increased final germination percentage”
Claim · model-written summary
KNO3 priming improved germination potential and seedling establishment.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- varying concentrations of KNO3e0
- Outcome
- germination potential and seedling establishmente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“halopriming with varying concentrations of KNO3 improved germination potential and seedling establishment of both cultivars”
e1“tomato seeds”
Claim · model-written summary
NaCl priming resulted in poor emergence and seedling growth relative to KNO3.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- NaCle0
- Outcome
- emergence and seedling growthe0
- Direction
- poore0
- Comparator
- KNO3e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it proved better option than NaCl which resulted in poor emergence and seedling growth.”
e1“tomato seeds”
e2“Halopriming with 25 mM KNO3 increased final germination percentage”
Claim · model-written summary
Seeds primed with 25 mM KNO3 showed maximum improvement.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 25 mM KNO3e0
- Outcome
- improvemente0
- Direction
- Maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum improvement was recorded in seeds primed with 25 mM KNO3.”
e1“tomato seeds”
e2“Halopriming with 25 mM KNO3 increased final germination percentage”
Claim · model-written summary
Authors suggest lower leachate conductivity, higher sugars and increased amylase activity may explain improved performance.
- Taxon
- tomatoSolanum lycopersicume1
- Outcome
- better performance of haloprimed seedse0
- Direction
- bettere0
- Qualifier
- lower electrical conductivity (EC) of seed leachates, higher total and reducing sugars along with increased α-amylase activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The better performance of haloprimed seeds may be due to lower electrical conductivity (EC) of seed leachates, higher total and reducing sugars along with increased α-amylase activity.”
e1“tomato seeds”
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