Abstract
Study on the effect of intergenotypic competition in cowpea revealed significant differences among cultivars for their competitive ability. Competition caused significant changes in the relative performance of cultivars with regard to the characters studied except pod length and number of seeds per pod. For seed yield, the average competition was the major source of bias in single-row plots. Estimates of the average competition effects and average expected bias for seed yield indicated that an aggressive competitor was over estimated in competition, whereas a poor competitor was under estimated. Negative correlation between yielding and competing abilities of cultivars suggest the need for bordered plots in yield evaluation trials of cowpea. Since pod length and number of seeds per pod were unaffected by competition, they could be beller selection criteria for yield in single-row plots.
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Claims 9
Claim · model-written summary
Cowpea cultivars differed significantly in competitive ability.
- Taxon
- cowpea
Vigna unguiculatae0 - Material
- cultivarse0
- Outcome
- competitive abilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Study on the effect of intergenotypic competition in cowpea revealed significant differences among cultivars for their competitive ability.”
Claim · model-written summary
Competition significantly changed relative cultivar performance except pod length and seed number per pod.
- Taxon
- cowpeaVigna unguiculatae0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Competition caused significant changes in the relative performance of cultivars with regard to the characters studied except pod length and number of seeds per pod.”
t0“cowpea”
Claim · model-written summary
Average competition was the major bias source for seed yield in single-row plots.
- Taxon
- cowpeaVigna unguiculatae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For seed yield, the average competition was the major source of bias in single-row plots.”
t0“cowpea”
Claim · model-written summary
Aggressive competitors had overestimated seed yield in competition.
- Taxon
- cowpeaVigna unguiculatae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an aggressive competitor was over estimated in competition”
t0“cowpea”
Claim · model-written summary
Poor competitors had underestimated seed yield in competition.
- Taxon
- cowpeaVigna unguiculatae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a poor competitor was under estimated”
t0“cowpea”
Claim · model-written summary
Yielding and competing abilities were negatively correlated.
- Taxon
- cowpeaVigna unguiculatae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Negative correlation between yielding and competing abilities of cultivars”
t0“cowpea”
Claim · model-written summary
Bordered plots are recommended for cowpea yield evaluation.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- bordered plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggest the need for bordered plots in yield evaluation trials of cowpea”
Claim · model-written summary
Pod length and seeds per pod were unaffected by competition.
- Taxon
- cowpeaVigna unguiculatae0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pod length and number of seeds per pod were unaffected by competition”
t0“cowpea”
Claim · model-written summary
Pod length and seeds per pod may be better selection criteria in single-row plots.
- Taxon
- cowpeaVigna unguiculatae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they could be beller selection criteria for yield in single-row plots”
t0“cowpea”
The same questions in other papers
competition · yield · Vigna unguiculata (cowpea)Results agree
6 papers in the same direction as this paper
- negative
- negative
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3 papers more in this group
See all 7 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.