Abstract
Cowpea [Vigna unguiculata (L.)] is one of the most important arid legumes cultivated for pulse and forage production. Drought is one of the most damageable constraints to crop production impacting negatively food security. The potential of cowpea to address food security is well established. However, not much is known about the base index selection method in breeding cowpea for drought tolerance, which is important for yields. Consequently, the present study has been conducted to: 1) evaluate the yield performance of cowpea genotypes under artificial drought and well-watered condition, 2) ranke genotype performance using selection indices, and 3) assess relationship between agronomic traits and yield. The experiment was the 2 watering conditions laid out in a Randomized Complete Block Design (RCBD) with three replications. The experiment was carried out in pots under screen house at the Department of Horticulture at KNUST. The result showed that KPR1-96-73, Simbo, CZ06-4-16, Wilibaly and Agyenkwa were high yielding in well-water condition while Ghana Shoba, Sangaraka, Nketewade, Ghana Shoni and Korobalen were high yielding genotypes in water stress condition. The average yield reduction was 60.6% and 16% for grain and fodder yield respectively. The biplot displays revealed four groups among the genotypes tested which were based on their yielding capacity and drought tolerance. In cluster B high yielding and drought tolerant genotypes were identified, high yielding and drought susceptible have been identified in cluster A, low yielding and drought tolerant in cluster D, and lastly low yielding and drought susceptible in cluster C. Genotypes in cluster B were best due to the fact that it combines high yield and tolerance to drought. They were Ghana Shoni, Nketewade, Sangaraka and Ghana Shoba. These genotypes might be suitably employed in further drought tolerance breeding programs of cowpea. Significant relationships were observed between agronomic trait and yields under drought condition.
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Claims 9
Claim · model-written summary
Genotypes KPR1-96-73, Simbo, CZ06-4-16, Wilibaly and Agyenkwa were high yielding in well-watered condition.
- Taxon
- Cowpea
Vigna unguiculatae0 - Material
- KPR1-96-73, Simbo, CZ06-4-16, Wilibaly and Agyenkwae1
- Treatment
- well-water conditione1
- Outcome
- high yieldinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e1“KPR1-96-73, Simbo, CZ06-4-16, Wilibaly and Agyenkwa were high yielding in well-water condition”
Claim · model-written summary
Genotypes Ghana Shoba, Sangaraka, Nketewade, Ghana Shoni and Korobalen were high yielding under water stress.
- Taxon
- CowpeaVigna unguiculatae0
- Material
- Ghana Shoba, Sangaraka, Nketewade, Ghana Shoni and Korobalene2
- Treatment
- water stress conditione2
- Outcome
- high yieldinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e2“Ghana Shoba, Sangaraka, Nketewade, Ghana Shoni and Korobalen were high yielding genotypes in water stress condition”
Claim · model-written summary
Average grain yield reduction under artificial drought relative to well-watered condition was 60.6%.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- artificial droughte5
- Outcome
- average yield reductione3
- Direction
- reductione3
- Value
- 60.6%e3
- Qualifier
- for graine3
- Comparator
- well-watered conditione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e3“The average yield reduction was 60.6% and 16% for grain and fodder yield respectively”
e5“evaluate the yield performance of cowpea genotypes under artificial drought and well-watered condition”
Claim · model-written summary
Average fodder yield reduction under artificial drought relative to well-watered condition was 16%.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- artificial droughte5
- Outcome
- fodder yielde3
- Direction
- reductione3
- Value
- 16%e3
- Comparator
- well-watered conditione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e3“The average yield reduction was 60.6% and 16% for grain and fodder yield respectively”
e5“evaluate the yield performance of cowpea genotypes under artificial drought and well-watered condition”
Claim · model-written summary
The biplot revealed four groups of genotypes based on yielding capacity and drought tolerance.
- Taxon
- CowpeaVigna unguiculatae0
- Outcome
- four groupse4
- Qualifier
- based on their yielding capacity and drought tolerancee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e4“The biplot displays revealed four groups among the genotypes tested which were based on their yielding capacity and drought tolerance”
Claim · model-written summary
Cluster B genotypes were high yielding and drought tolerant.
- Taxon
- CowpeaVigna unguiculatae0
- Outcome
- high yielding and drought tolerant genotypese7
- Qualifier
- cluster Be7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e7“In cluster B high yielding and drought tolerant genotypes were identified”
Claim · model-written summary
Cluster B genotypes Ghana Shoni, Nketewade, Sangaraka and Ghana Shoba were best, combining high yield and drought tolerance.
- Taxon
- CowpeaVigna unguiculatae0
- Material
- Ghana Shoni, Nketewade, Sangaraka and Ghana Shobae6
- Outcome
- high yield and tolerance to droughte7
- Qualifier
- cluster Be7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e6“They were Ghana Shoni, Nketewade, Sangaraka and Ghana Shoba”
e7“Genotypes in cluster B were best due to the fact that it combines high yield and tolerance to drought”
Claim · model-written summary
Genotypes in cluster B might be employed in further cowpea drought tolerance breeding programs.
- Taxon
- cowpeaVigna unguiculatae1
- Outcome
- drought tolerance breeding programse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“These genotypes might be suitably employed in further drought tolerance breeding programs of cowpea”
Claim · model-written summary
Significant relationships were observed between agronomic traits and yields under drought condition.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- drought conditione1
- Outcome
- agronomic trait and yieldse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea [Vigna unguiculata (L.)]”
e1“Significant relationships were observed between agronomic trait and yields under drought condition”
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
- negative
- positive
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See all 46 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.