Claim · model-written summary
Male nuclei were seen free in the pollen tube after leaving generative cytoplasm.
- Outcome
- male nuclei may leave the generative cytoplasm, and were seen free in the tubee0
IrisNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The male nuclei may leave the generative cytoplasm, and were seen free in the tube”
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 Pollen tubes sometimes branched.
- 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 observed in the embryo sac 79 hours after pollination.