Abstract
Cowpea seeds lose their vigour during storage at high temperature and high relative humidity. Present study was conducted to invigorate the performance of high and low vigour seeds (exposed to 45 ± 2o C and 100% RH) by seed priming with different chemicals and concentrations (GA3 (100ppm); CaCl2 (10-3M); Ammonium Molybdate (10-3M); KBr (10-3M); Mg (NO3)2 (10-3M); ZnSO4 (10-3M); hydro primed and dry seed (control) at 15o C for 24 hours. Priming was effective in reducing the time for 50 % germination and mean germination time and increased the germination percentage in low vigour seeds, while energy of germination and final germination percentage in normal seeds displayed a minor increase. Priming of normal / low – vigour seeds improved the vigour of seedling in terms of seedling length and their dry weight and seedling vigour index. Seed priming of fresh and accelerated cowpea seeds increased the electrical conductivity of seed leachate, cell membrane stability, total protein content, a – amylase activity, peroxidase activity and dehydrogenase activity over control dry seeds. Esterase and peroxidase enzymes were completely lost as a result of accelerated ageing, which showed reappearance after priming. Priming showed little improvement in the banding pattern and intensity of enzyme in normal seeds.
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Claims 14
Claim · model-written summary
Priming reducing time for 50 % germination in low-vigour cowpea seeds.
- Taxon
- cowpea
Vigna unguiculatat0 - Material
- low vigour seedse0
- Treatment
- Priminge0
- Outcome
- time for 50 % germinatione0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Priming was effective in reducing the time for 50 % germination and mean germination time and increased the germination percentage in low vigour seeds”
Claim · model-written summary
Priming reducing mean germination time in low-vigour cowpea seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- low vigour seedse0
- Treatment
- Priminge0
- Outcome
- mean germination timee0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Priming was effective in reducing the time for 50 % germination and mean germination time and increased the germination percentage in low vigour seeds”
Claim · model-written summary
Priming increased germination percentage in low-vigour cowpea seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- low vigour seedse0
- Treatment
- Priminge0
- Outcome
- germination percentagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Priming was effective in reducing the time for 50 % germination and mean germination time and increased the germination percentage in low vigour seeds”
Claim · model-written summary
Priming slightly increased germination energy and final germination percentage in normal seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- normal seedse0
- Outcome
- energy of germination and final germination percentagee0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“energy of germination and final germination percentage in normal seeds displayed a minor increase”
Claim · model-written summary
Priming improved seedling length, dry weight and vigour index.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Priminge0
- Outcome
- seedling length and their dry weight and seedling vigour indexe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Priming of normal / low – vigour seeds improved the vigour of seedling in terms of seedling length and their dry weight and seedling vigour index.”
Claim · model-written summary
Seed priming increased electrical conductivity of seed leachate over dry seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Seed priminge0
- Outcome
- electrical conductivity of seed leachatee0
- Direction
- increasede0
- Comparator
- control dry seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Seed priming of fresh and accelerated cowpea seeds increased the electrical conductivity of seed leachate, cell membrane stability, total protein content, a – amylase activity, peroxidase activity and dehydrogenase activity over control dry seeds.”
Claim · model-written summary
Seed priming increased cell membrane stability over dry seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Seed priminge0
- Outcome
- cell membrane stabilitye0
- Direction
- increasede0
- Comparator
- control dry seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Seed priming of fresh and accelerated cowpea seeds increased the electrical conductivity of seed leachate, cell membrane stability, total protein content, a – amylase activity, peroxidase activity and dehydrogenase activity over control dry seeds.”
Claim · model-written summary
Seed priming increased total protein content over dry seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Seed priminge0
- Outcome
- total protein contente0
- Direction
- increasede0
- Comparator
- control dry seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Seed priming of fresh and accelerated cowpea seeds increased the electrical conductivity of seed leachate, cell membrane stability, total protein content, a – amylase activity, peroxidase activity and dehydrogenase activity over control dry seeds.”
Claim · model-written summary
Seed priming increased a – amylase activity over dry seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Seed priminge0
- Outcome
- a – amylase activitye0
- Direction
- increasede0
- Comparator
- control dry seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Seed priming of fresh and accelerated cowpea seeds increased the electrical conductivity of seed leachate, cell membrane stability, total protein content, a – amylase activity, peroxidase activity and dehydrogenase activity over control dry seeds.”
Claim · model-written summary
Seed priming increased peroxidase activity over dry seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Seed priminge0
- Outcome
- peroxidase activitye0
- Direction
- increasede0
- Comparator
- control dry seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Seed priming of fresh and accelerated cowpea seeds increased the electrical conductivity of seed leachate, cell membrane stability, total protein content, a – amylase activity, peroxidase activity and dehydrogenase activity over control dry seeds.”
Claim · model-written summary
Seed priming increased dehydrogenase activity over dry seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Seed priminge0
- Outcome
- dehydrogenase activitye0
- Direction
- increasede0
- Comparator
- control dry seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Seed priming of fresh and accelerated cowpea seeds increased the electrical conductivity of seed leachate, cell membrane stability, total protein content, a – amylase activity, peroxidase activity and dehydrogenase activity over control dry seeds.”
Claim · model-written summary
Accelerated ageing eliminated esterase and peroxidase enzymes.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- accelerated ageinge0
- Outcome
- Esterase and peroxidase enzymese0
- Direction
- completely loste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Esterase and peroxidase enzymes were completely lost as a result of accelerated ageing”
Claim · model-written summary
Priming restored esterase and peroxidase enzymes after ageing.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- priminge0
- Outcome
- Esterase and peroxidase enzymese0
- Direction
- reappearancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Esterase and peroxidase enzymes were completely lost as a result of accelerated ageing, which showed reappearance after priming.”
Claim · model-written summary
Priming gave little improvement in enzyme banding pattern and intensity in normal seeds.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- normal seedse0
- Treatment
- Priminge0
- Outcome
- banding pattern and intensity of enzymee0
- Direction
- improvemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea [vigna unguiculata (L.) Walp]”
e0“Priming showed little improvement in the banding pattern and intensity of enzyme in normal seeds.”
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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.