Abstract
The continued improvement in the yield of cowpea for the semi-arid regions where it is a dominant crop will record rapid progress if the genetic basis for yield under different moisture regimes is better understood. This study investigated the genetic combining abilities and heterosis for grain yield, yield components, flowering and biomass production among diallel hybrids derived from nine cowpea genotypes. Results showed that moisture stress significantly reduced grain yield, biomass production, and number of pods per plant. Only for grain yield was a significant interaction observed for moisture regimes. Genetic control for grain size, number of seeds per pod and days to flowering was dominated by additive genetic effects. For grain yield, both additive and non-additive genetic effects were dominant. The genetic control of yield under the two soil moisture conditions indicated that grain yield improvement will be more challenging for drought prone regions. Nonetheless, careful selection of genotypes that have complementary but different alleles for yield under different soil moisture conditions might permit yield improvement through recurrent selection. This study has identified parental lines, developed populations, and provided a breeding strategy for developing cowpea cultivars with higher grain yield for Guinea and Sudan savannah regions of West Africa.
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Claims 12
Claim · model-written summary
Moisture stress reduced grain yield in cowpea.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- moisture stresse0
- Outcome
- grain yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“moisture stress significantly reduced grain yield, biomass production, and number of pods per plant”
t0“Cowpea”
Claim · model-written summary
Moisture stress reduced biomass production in cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- moisture stresse0
- Outcome
- biomass productione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“moisture stress significantly reduced grain yield, biomass production, and number of pods per plant”
t0“Cowpea”
Claim · model-written summary
Moisture stress reduced number of pods per plant in cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- moisture stresse0
- Outcome
- number of pods per plante0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“moisture stress significantly reduced grain yield, biomass production, and number of pods per plant”
t0“Cowpea”
Claim · model-written summary
Grain yield showed a significant interaction with moisture regimes.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- moisture regimese0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only for grain yield was a significant interaction observed for moisture regimes”
t0“Cowpea”
Claim · model-written summary
Additive genetic effects dominated genetic control of grain size.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- grain sizee0
- Qualifier
- additive genetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genetic control for grain size, number of seeds per pod and days to flowering was dominated by additive genetic effects”
t0“Cowpea”
Claim · model-written summary
Additive genetic effects dominated genetic control of number of seeds per pod.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- number of seeds per pode0
- Qualifier
- additive genetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genetic control for grain size, number of seeds per pod and days to flowering was dominated by additive genetic effects”
t0“Cowpea”
Claim · model-written summary
Additive genetic effects dominated genetic control of days to flowering.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- days to floweringe0
- Qualifier
- additive genetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genetic control for grain size, number of seeds per pod and days to flowering was dominated by additive genetic effects”
t0“Cowpea”
Claim · model-written summary
Both additive and non-additive genetic effects dominated grain yield.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- grain yielde0
- Qualifier
- additive and non-additive genetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For grain yield, both additive and non-additive genetic effects were dominant”
t0“Cowpea”
Claim · model-written summary
Grain yield improvement was judged more challenging for drought-prone regions.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- grain yield improvemente0
- Direction
- more challenginge0
- Setting
- drought prone regionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield improvement will be more challenging for drought prone regions”
t0“Cowpea”
Claim · model-written summary
The authors suggest recurrent selection of genotypes with complementary yield alleles under different moisture conditions.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- genotypese0
- Outcome
- yield improvement through recurrent selectione0
- Qualifier
- different soil moisture conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“careful selection of genotypes that have complementary but different alleles for yield under different soil moisture conditions might permit yield improvement through recurrent selection”
t0“Cowpea”
Claim · model-written summary
The study identified parental lines and developed populations for cowpea breeding.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- identified parental lines, developed populationse0
- Setting
- Guinea and Sudan savannah regions of West Africae0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“identified parental lines, developed populations, and provided a breeding strategy for developing cowpea cultivars with higher grain yield for Guinea and Sudan savannah regions of West Africa”
Claim · model-written summary
The study provided a breeding strategy for higher grain yield in cowpea for West African savannah regions.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- breeding strategy for developing cowpea cultivars with higher grain yielde0
- Setting
- Guinea and Sudan savannah regions of West Africae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“identified parental lines, developed populations, and provided a breeding strategy for developing cowpea cultivars with higher grain yield for Guinea and Sudan savannah regions of West Africa”
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
- positive
42 papers more in this group
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.