Claim · model-written summary
Model results indicate that only a slight decrease in viability is needed to decrease the proportion of homostyles where they are abundant.
- Taxon
- Primula vulgaris
Primula vulgarist0 - Treatment
- decrease in viabilitye7
- Outcome
- proportion of homostylese7
- Direction
- decreasee7
Verbatim
t0“Primula vulgaris”
e7“only a slight decrease in viability is needed to decrease the proportion of homostyles in populations where they are already abundant”
Title
The genetics of homostyly in populations of Primula vulgaris
Walter Fred Bodmer Philosophical transactions of the Royal Society of London. Series B, Biological sciences 1960. doi:10.1098/rstb.1960.0001
Other claims from this paper (9)
- Observation Primula vulgaris populations show heterogeneity in homostyle frequency among populations.
- Observation The only significant change in Primula vulgaris homostyle frequency was a downward trend.
- Observation No evidence was found of an upward trend in homostyle frequency in Primula vulgaris.
- Observation Primula vulgaris shows a marked deficiency of thrums relative to pins at high homostyle frequencies.
- Association Model results indicate that homostyles increase in frequency when there are no viability disturbances.
- Association Model results indicate that only moderate viability disturbances are needed to prevent homostyles from increasing when crossing is frequent.
- Mechanism Decreased viability of mature plants could account for the thrum deficiency in Primula vulgaris.
- Association With high initial selective values, only a few occurrences of homostyles are needed for them to gain a hold and increase in frequency.
- Mechanism Crossing between homostyles is an essential buffering mechanism against reversal of the outcrossing system to inbreeding.
Podophyllum
Oryza sativa