Abstract
Objective: To investigate the effects of osmotic stress on performance forage cowpea varieties at critical stage of germination to salinity stress. Methodology: A study was conducted at the Seed Technology Laboratory of Mansoura University, Egypt during April and May 2014. Two forage cowpea cultivars (Buff and Baladi) were evaluated in the salinity concentrations 0, 2, 4, 6, 8, 10, 12, 14 and 16 dS mG 1 NaCl. Results: The results exposed that germination parameters namely final germination percentage, germination index and seedling vigor index were estimated. Seedling characters namely shoot and root length, shoot and root foliage weight, shoot and root dry weight and chlorophyll content were measured. Forage cowpea cultivars significantly diverse in means of final germination percentage, germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content. Increasing salinity levels from 0-16 dS mG 1 significantly diminished germination percentage, germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content and the control treatment recorded the highest averages of these characters. Thus, the lowest averages of these characters were recorded with highest salinity levels i.e., 16 dS mG 1 . Conclusion: Results clearly displayed that germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content significantly affected by the interaction between forage cowpea cultivars and salinity concentrations. It could be determined that Buff cultivar was more tolerant to salinity stress and produced highest germination and seedling parameters which must be put in breeding program of forage cowpea under salinity conditions.
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Claims 9
Claim · model-written summary
Buff and Baladi forage cowpea differed significantly in germination percentage, germination index, and seedling vigor index.
Verbatim
e0“Forage cowpea cultivars significantly diverse in means of final germination percentage, germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content.”
e1“Two forage cowpea cultivars (Buff and Baladi)”
Claim · model-written summary
Buff and Baladi forage cowpea differed significantly in shoot and root lengths, fresh and dry weights, and chlorophyll content.
Verbatim
e0“Forage cowpea cultivars significantly diverse in means of final germination percentage, germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content.”
e1“Two forage cowpea cultivars (Buff and Baladi)”
Claim · model-written summary
Increasing salinity from 0 to 16 dS mG 1 reduced cowpea germination percentage, germination index, and seedling vigor index significantly.
- Taxon
- Cowpea
Vigna unguiculatat0 - Treatment
- Increasing salinity levels from 0-16 dS mG 1e0
- Outcome
- germination percentage, germination index, seedling vigor indexe0
- Direction
- diminishede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing salinity levels from 0-16 dS mG 1 significantly diminished germination percentage, germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content and the control treatment recorded the highest averages of these characters.”
t0“Forage Cowpea Seed”
Claim · model-written summary
Increasing salinity reduced cowpea shoot and root length, fresh and dry weights, and chlorophyll content significantly.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- Increasing salinity levels from 0-16 dS mG 1e0
- Outcome
- shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll contente0
- Direction
- diminishede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing salinity levels from 0-16 dS mG 1 significantly diminished germination percentage, germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content and the control treatment recorded the highest averages of these characters.”
t0“Forage Cowpea Seed”
Claim · model-written summary
The highest salinity of 16 dS mG 1 produced the lowest cowpea germination and seedling trait averages.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- highest salinity levels i.e., 16 dS mG 1e0
- Outcome
- these characterse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest averages of these characters were recorded with highest salinity levels i.e., 16 dS mG 1 .”
t0“Forage Cowpea Seed”
Claim · model-written summary
Cowpea cultivar and salinity concentration interacted significantly for germination index and seedling vigor index.
Verbatim
e0“germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content significantly affected by the interaction between forage cowpea cultivars and salinity concentrations.”
Claim · model-written summary
Cowpea cultivar and salinity concentration interacted significantly for shoot and root length, fresh and dry weights, and chlorophyll content.
Verbatim
e0“germination index, seedling vigor index, shoot and root lengths, shoot and root fresh weights, shoot and root dry weights and chlorophyll content significantly affected by the interaction between forage cowpea cultivars and salinity concentrations.”
Claim · model-written summary
Buff cowpea was more salinity tolerant and had the highest germination and seedling parameters.
- Taxon
- CowpeaVigna unguiculatat0
- Material
- Buffe0
- Outcome
- germination and seedling parameterse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Buff cultivar was more tolerant to salinity stress and produced highest germination and seedling parameters”
t0“Forage Cowpea Seed”
Claim · model-written summary
The authors recommend the Buff cultivar for a forage cowpea breeding program under salinity.
Verbatim
e0“Buff cultivar was more tolerant to salinity stress and produced highest germination and seedling parameters which must be put in breeding program of forage cowpea under salinity conditions.”
The same questions in other papers
salinity · physiology: pigments · Vigna unguiculata (cowpea)Results differ
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- positive
- negative
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See all 10 papers →salinity · growth · Vigna unguiculata (cowpea)Results differ
56 papers in the same direction as this paper · 6 in the opposite direction
- negative
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See all 63 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.