Abstract
Abstract Aims Very little is known about the performance of non-agricultural plant species in monocultures, even though nearly all agricultural species have experienced the transition from multi-species environments to dense monospecific stands during the breeding process. In the light of recent work that highlighted the possibility that the weedy species Arabidopsis thaliana can offer novel insight into crop breeding, we aimed to test the effect of sowing density on group and individual performance in different photoperiod environments in A. thaliana. Methods We studied the performance of A. thaliana Cvi-0 ecotype. The choice of Cvi-0 was based on a preliminary experiment in which plants of Cvi-0 ecotype exhibited high competitive performance. Sowing densities used were 17.6, 8.8, 4.4, 2.2 and 1.1 cm2 per plant and photoperiod environments 12 or 16 h of day light. Important Findings In this experiment, populations attained constant total seed yield for all densities. Some interaction effect occurred, as at high sowing density and at longer day length plants produced heavier seeds, whereas at shorter day length seed weight was negatively related to plant density. These results shed light on different strategies that annual plants can adopt when they face intense intraspecific competition, and could help to offer new perspectives for breeding crops with enhanced group performance.
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Claims 4
Claim · model-written summary
Cvi-0 showed high competitive performance in preliminary testing.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Material
- Cvi-0e0
- Outcome
- high competitive performancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants of Cvi-0 ecotype exhibited high competitive performance”
t0“Arabidopsis thaliana (L.) Heynh”
Claim · model-written summary
Total seed yield stayed constant across sowing densities.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- all densitiese0
- Outcome
- total seed yielde0
- Direction
- constante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“populations attained constant total seed yield for all densities”
t0“Arabidopsis thaliana (L.) Heynh”
Claim · model-written summary
High density with longer days produced heavier seeds.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- high sowing density and at longer day lengthe0
- Outcome
- seedse0
- Direction
- heaviere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at high sowing density and at longer day length plants produced heavier seeds”
t0“Arabidopsis thaliana (L.) Heynh”
Claim · model-written summary
At shorter day length, seed weight declined with density.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- plant densitye0
- Outcome
- seed weighte0
- Direction
- negatively relatede0
- Qualifier
- shorter day lengthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at shorter day length seed weight was negatively related to plant density”
t0“Arabidopsis thaliana (L.) Heynh”
The same questions in other papers
light · yield · Arabidopsis thaliana (thale cress)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
2 papers more in this group
See all 6 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.