Abstract
Cowpea provides the cheapest source of protein with an average range of protein content of 23–30%. However, cowpea growth, development, and yield are greatly affected by drought during flowering and pod filling in the sub-Sahelian areas. The best way to cope with this situation is to develop drought-tolerant cowpea varieties. The objective of this study was therefore to evaluate cowpea lines developed through mutagenesis using gamma radiation to assess their reaction under optimal and water-stressed conditions. The response of ten mutants-irradiated Moussa local was then evaluated in pots arranged in a split plot design in a screen house. Two conditions were applied with optimum and water-stressed conditions. The stress was applied for two weeks at flowering. Two cowpea varieties Gorom local (drought-tolerant) and Moussa local (susceptible) nonirradiated were used as checks. Thereafter, field trials under two different sowing dates were conducted to identify the best tolerant mutant line(s) using agromorphological and tolerance indicators. The results indicated that mutant lines (MoussaM51-4P10 and MoussaM43-20P14) exhibited better stress tolerance and produced higher yield under water stress conditions. Stress Tolerance Index (STI) was better to select cowpea mutant tolerant with higher yielding under moderate stress (SI = 35%). The study confirmed that water stress has a negative effect on cowpea seeds production and on leaf chlorophyll content. The high temperature during experiment increased water stress effect mainly on non-irradiated checks (Gorom local and Moussa local).
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Mutant line MoussaM51-4P10 showed better stress tolerance under water stress.
- Taxon
- cowpea
Vigna unguiculatae2 - Material
- MoussaM51-4P10e1
- Treatment
- water stresse1
- Outcome
- stress tolerancee1
- Direction
- bettere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results indicated that mutant lines (MoussaM51-4P10 and MoussaM43-20P14) exhibited better stress tolerance and produced higher yield under water stress conditions”
e2“evaluate cowpea lines developed through mutagenesis using gamma radiation”
Claim · model-written summary
Mutant line MoussaM51-4P10 produced higher yield under water stress.
- Taxon
- cowpeaVigna unguiculatae2
- Material
- MoussaM51-4P10e1
- Treatment
- water stresse1
- Outcome
- yielde1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results indicated that mutant lines (MoussaM51-4P10 and MoussaM43-20P14) exhibited better stress tolerance and produced higher yield under water stress conditions”
e2“evaluate cowpea lines developed through mutagenesis using gamma radiation”
Claim · model-written summary
Mutant line MoussaM43-20P14 showed better stress tolerance under water stress.
- Taxon
- cowpeaVigna unguiculatae2
- Material
- MoussaM43-20P14e1
- Treatment
- water stresse1
- Outcome
- stress tolerancee1
- Direction
- bettere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results indicated that mutant lines (MoussaM51-4P10 and MoussaM43-20P14) exhibited better stress tolerance and produced higher yield under water stress conditions”
e2“evaluate cowpea lines developed through mutagenesis using gamma radiation”
Claim · model-written summary
Mutant line MoussaM43-20P14 produced higher yield under water stress.
- Taxon
- cowpeaVigna unguiculatae2
- Material
- MoussaM43-20P14e1
- Treatment
- water stresse1
- Outcome
- yielde1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results indicated that mutant lines (MoussaM51-4P10 and MoussaM43-20P14) exhibited better stress tolerance and produced higher yield under water stress conditions”
e2“evaluate cowpea lines developed through mutagenesis using gamma radiation”
Claim · model-written summary
Stress Tolerance Index was better than other criteria for selecting tolerant cowpea mutants with higher yield under moderate stress (SI = 35%).
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- moderate stresse1
- Outcome
- Stress Tolerance Index (STI)e1
- Direction
- bettere1
- Value
- SI = 35%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Stress Tolerance Index (STI) was better to select cowpea mutant tolerant with higher yielding under moderate stress (SI = 35%)”
Claim · model-written summary
Water stress had a negative effect on cowpea seed production.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- water stresse1
- Outcome
- seeds productione1
- Direction
- negativee1
- Comparator
- optimume2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The study confirmed that water stress has a negative effect on cowpea seeds production and on leaf chlorophyll content”
e2“Two conditions were applied with optimum and water-stressed conditions”
Claim · model-written summary
Water stress had a negative effect on cowpea leaf chlorophyll content.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- water stresse1
- Outcome
- leaf chlorophyll contente1
- Direction
- negativee1
- Comparator
- optimume2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The study confirmed that water stress has a negative effect on cowpea seeds production and on leaf chlorophyll content”
e2“Two conditions were applied with optimum and water-stressed conditions”
Claim · model-written summary
High temperature during the experiment increased the water stress effect, mainly on the non-irradiated checks.
- Taxon
- cowpeaVigna unguiculatae2
- Material
- non-irradiated checks (Gorom local and Moussa local)e1
- Treatment
- high temperaturee1
- Outcome
- water stress effecte1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The high temperature during experiment increased water stress effect mainly on non-irradiated checks (Gorom local and Moussa local)”
e2“evaluate cowpea lines developed through mutagenesis using gamma radiation”
The same questions in other papers
drought · yield · Vigna unguiculata (cowpea)Results differ
38 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
42 papers more in this group
See all 46 papers →drought · physiology: pigments · Vigna unguiculata (cowpea)Positive and negative results
8 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
7 papers more in this group
See all 11 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.