Claim · model-written summary
Pollen tubes sometimes branched.
- Outcome
- Pollen tubes may branche0
IrisNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pollen tubes may branch or a grain may produce two tubes”
t0“Iris”
Title
Pollen Tube and Spermatogenesis in Iris
M. Louise Sawyer Botanical Gazette 1917. doi:10.1086/332101
Other claims from this paper (8)
- Observation The Iris versicolor pollen tube grows through a longitudinal groove in the style.
- Method / resource Pollen tubes removed from style and stigma could grow in nutrient solutions.
- Observation Pollen-tube growth rate accelerated.
- Observation A pollen grain sometimes produced two tubes.
- Observation The generative cell was elongated and pointed, and could precede the tube nucleus.
- Observation Male nuclei were usually produced after the generative cell entered the tube.
- Observation Male nuclei were seen free in the pollen tube after leaving generative cytoplasm.
- Observation Male nuclei were observed in the embryo sac 79 hours after pollination.