Claim · model-written summary
The increase in abscission in non‐irrigated cowpea corresponded to a nearly 60 % reduction in pod retention.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- non‐irrigated plantse7
- Outcome
- pod retentione1
- Direction
- reductione1
- Value
- 60 %e1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three cowpea [ Vigna unguiculata (L.) Walp.] genotypes”
e7“Abscission in the bottom two‐third nodes increased from 82 % in well‐irrigated plants to 93 % in non‐irrigated plants”
e1“This increase in abscission corresponded to nearly 60 % reduction in pod retention”
Title
Reproductive Abscission and Yield of Irrigated and Drought Stressed Cowpea
H. Tewolde; A. K. Dobrenz; D. L. Robinson; et al. Journal of Agronomy and Crop Science 1991. doi:10.1111/j.1439-037x.1991.tb00903.x
Other claims from this paper (17)
- Observation Reproductive abscission of CA‐5 and AZ‐54 ranged between 68 and 76 % in the first experiment.
- Observation Reproductive abscission of SPH ranged between 86 and 89 % in the first experiment.
- Observation CA‐5 and AZ‐54 retained two to three pods per peduncle.
- Observation SPH retained only one mature pod per peduncle.
- Observation Average seed yields of SPH and AZ‐54 were 45 and 50 % of CA‐5.
- Intervention effect Drought stress did not affect production of floral buds in cowpea.
- Intervention effect Drought stress significantly increased percent reproductive abscission of CA‐5.
- Intervention effect Drought stress decreased pod retention of CA‐5.
- Intervention effect Abscission in the bottom two‐third nodes of cowpea rose from 82 % in well‐irrigated to 93 % in non‐irrigated plants.
- Intervention effect Pods per peduncle in the bottom two‐third nodes of cowpea fell from 1.9 in well‐irrigated to fewer in non‐irrigated plants.
- Intervention effect Drought stress did not affect abscission or pod retention in the top one‐third nodes of cowpea.
- Intervention effect Stress decreased peduncles per plant and seeds per pod in cowpea.
- Intervention effect Stress decreased dry matter and seed yield per plant in cowpea.
- Intervention effect Stress did not affect seed weight or harvest index in cowpea.
- Mechanism The decrease in seed yield under stress was largely due to fewer pods and seeds per pod.
- Mechanism Fewer pods under stress resulted from fewer peduncles and more reproductive abscission in cowpea.
- Association External conditions that raise abscission beyond normal levels are concluded to reduce cowpea seed yield.