Claim · model-written summary
Drought stress significantly increased percent reproductive abscission of CA‐5.
- Taxon
- cowpea
Vigna unguiculatae0 - Material
- CA‐5e6
- Treatment
- Drought stresse5
- Outcome
- percent reproductive abscissione6
- Direction
- increasede6
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three cowpea [ Vigna unguiculata (L.) Walp.] genotypes”
e5“Drought stress in the second experiment did not affect production of floral buds”
e6“but significantly increased percent reproductive abscission and decreased pod retention of CA‐5”
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 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 The increase in abscission in non‐irrigated cowpea corresponded to a nearly 60 % reduction in pod retention.
- 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.