Claim · model-written summary
In R. bipinnata, R. boryana and R. tenax, secondary and tertiary shoot lobules are progenetic relative to primary shoot lobules.
- Taxon
- R. bipinnata, R. boryana and R. tenaxCladoradula boryanaCladoradula tenaxe1
- Outcome
- lobules on secondary and tertiary shootse1
- Qualifier
- progenetic with respect to lobules on primary shootse1
Verbatim
e0“Changes in lobule morphology in Radula subgenus Cladoradula show liverworts”
e1“In individuals of R. bipinnata, R. boryana and R. tenax, lobules on secondary and tertiary shoots are progenetic with respect to lobules on primary shoots”
Title
Matt A. M. Renner; Nicolas Devos; Elizabeth A. Brown; et al. Botanical Journal of the Linnean Society 2013. doi:10.1111/boj.12087
Other claims from this paper (7)
- Observation In R. campanigera, secondary and tertiary branch lobules show neoteny-consistent slopes with unchanged growth duration.
- Association Changes in duration of lobule growth explain 85% of the variation in lobule shape between species.
- Observation The trajectory of allometric growth is extended or truncated in different species relative to outgroup and ancestral nodes.
- Observation Morphological diversification in the crown contrasts with the relative stasis between the ancestral node and R. brunnea.
- Observation Divergence and associated heterochronic changes in the clade occurred relatively recently.
- Mechanism Hypermorphosis in lobule ontogeny could be a by-product of the longer growth durations needed to build primary axes.
- Mechanism Large auriculate lobules could function in external water transport by providing continuity of surfaces for capillary solute transport.