Abstract
The results of the foundamental investigations on the physiology of petunia-pollen are summari.zed as fcllows : - 1) The germination tests with petunia-pollen were conductcd on various germination-media with 1% agar-agar containing lactose, maltose, sucrose, glu cose, fructose, galactose, rhamnose and xylose respectively and with sugarless medium as control. Disaccharide media were satisfactory for the pollen-gerrnination and the pollen-tube elongation. Their optimum concentration was nearly 0.8 mol. The percentage of pollen germination on monosaccharide media was lower than not only that on the other sugar media, but also that on the control medium. Therefor, it was considered that monosaccharides have an inhibiting effedt on the pollen-germination. But galactose medium was the exceptior., for the pollen-ge, rmination was as well as on the disaccharide medium. And pollen on the mannose medium was not germinated at all.
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Claims 5
Claim · model-written summary
Disaccharide media supported petunia pollen-tube elongation and germination better than the sugarless control.
- Treatment
- disaccharide mediae2
- Outcome
- pollen-tube elongatione2
- Direction
- satisfactorye2
- Comparator
- sugarless mediume1
_flowers_in_Westgate_Gardens%2C_Canterbury.jpg?width=60){kind=small}
PetuniaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
_flowers_in_Westgate_Gardens%2C_Canterbury.jpg?width=500)
Verbatim
t0“petunia-pollen”
e1“with sugarless medium as control”
e2“Disaccharide media were satisfactory for the pollen-gerrnination and the pollen-tube elongation”
Claim · model-written summary
Optimum sugar concentration for disaccharide media was nearly 0.8 mol.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“petunia-pollen”
e3“Their optimum concentration was nearly 0.8 mol”
Claim · model-written summary
Pollen germination on monosaccharide media was lower than on other sugar media and on the control medium.
- Treatment
- monosaccharide mediae4
- Outcome
- percentage of pollen germinatione4
- Direction
- lowere4
- Comparator
- control mediume4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“petunia-pollen”
e4“The percentage of pollen germination on monosaccharide media was lower than not only that on the other sugar media, but also that on the control medium”
Claim · model-written summary
Galactose medium gave pollen germination as good as the disaccharide medium.
- Treatment
- galactose mediume5
- Outcome
- pollen-ge, rminatione5
- Direction
- as well ase5
- Comparator
- disaccharide mediume5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“petunia-pollen”
e5“But galactose medium was the exceptior., for the pollen-ge, rmination was as well as on the disaccharide medium”
Claim · model-written summary
Pollen on mannose medium did not germinate at all.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“petunia-pollen”
e6“And pollen on the mannose medium was not germinated at all”
The same questions in other papers
in vitro · yield · Petunia (petunia)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
in vitro · growth · Petunia (petunia)Positive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- no effect
3 papers more in this group
See all 7 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.