Abstract
According to the first appearance of pollen ger-minating power two distinct types exist in plant. In the first type pollen germinating power appears before anther dehiscence, while in the second type it appears after anther dehiscence.°Cucumber be-longs to the first type and egg-plant to the second. Studies of pollen germinating power in°Cucumber and egg-plant were°Conducted from two days be-fore anthesis, to show the effect of different tem-peratures, on pollen germinating power. Pollen was taken from anthers at different stages of anthesis and sown on artificial medium (1% agar, 16% sucrose and pH 6.2-6.4 in°Cucum-ber, 1% agar, 8% sucrose and pH 5.6 in egg plant). In°Cucumber the maximum of pollen viability was recognized at anther dehiscence or immedi-ately after. When the male flowers were placed at different temperatures for 21 hours prior to the following flowering morning (anther dehiscence), no marked difference was recognized in pollen via-bility (Fig. 1). When the temperature treatments were°Carried out from 39 hours before anthesis, pollen viability varied with the temperature (Fig.2). High temperature shortened the pollen longevity, while low temperature prolonged it. The maximum height of pollen viability was observed in male flowers at 20-25°C. The relationship between pollen viability and temperature was°Confirmed by altering temperatures at anther dehiscence (Fig. 3). In egg plant anther dehiscence and anthesis were variable according to temperatures. But anther dehiscence occurred generally before anthesis. Pollen germinating power rose immediately after anther dehiscence. Anthers, graded in three groups according to amount of pollen scattered, were first placed at 20 and 30°C for one day and later placed at 25°C. The results showed that high temperature for one day shortened pollen longevity more than low temperature and anthers scattering abundant pollen grains were in an ad-vanced stage of maturation (Table 1). When an-thers treated at 25°C and 15°C from two days before anthesis, to the flowering morning, were placed at 20°C, the influence of previous tempera-ture was recoginzed in pollen maturation (Fig.4). According to the temperature from anther dehis-cence, the pollen viability and longevity varied (Fig. 5). These facts were noted in the from day to night temperature decline graph (Fig. 6 and 7). The temperature appropriate for pollen maturation seems to be approximately 20°C. From the above mentioned results, it may be°Concluded that pollen germinating power (pollen viability) and longevity vary with the temperature from two, days before anthesis to old flowers.
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Claims 17
Claim · model-written summary
Cucumber pollen germinating power appeared before anther dehiscence.
Verbatim
e0“°Cucumber be-longs to the first type”
Claim · model-written summary
Egg-plant pollen germinating power appeared after anther dehiscence.
- Taxon
- egg-plant
Solanum melongenae0 - Outcome
- seconde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“egg-plant to the second”
Claim · model-written summary
Cucumber pollen viability reached its maximum at or immediately after anther dehiscence.
Verbatim
e0“In°Cucumber the maximum of pollen viability was recognized at anther dehiscence or immedi-ately after.”
Claim · model-written summary
Cucumber pollen viability showed no marked difference after 21 hours of preflowering temperature treatments.
- Taxon
- cucumber
Cucumis sativust0 - Organ / stage
- male flowerse0
- Treatment
- different temperatures for 21 hourse0
- Outcome
- pollen via-bilitye0
- Direction
- no marked differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the male flowers were placed at different temperatures for 21 hours prior to the following flowering morning (anther dehiscence), no marked difference was recognized in pollen via-bility”
t0“cucumber and egg plant”
Claim · model-written summary
Cucumber pollen viability varied when temperature treatment began 39 hours before anthesis.
- Taxon
- cucumberCucumis sativust0
- Treatment
- temperature treatmentse0
- Outcome
- pollen viabilitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the temperature treatments were°Carried out from 39 hours before anthesis, pollen viability varied with the temperature”
t0“cucumber and egg plant”
Claim · model-written summary
High temperature shortened cucumber pollen longevity.
- Taxon
- cucumberCucumis sativust0
- Treatment
- High temperaturee0
- Outcome
- pollen longevitye0
- Direction
- shortenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High temperature shortened the pollen longevity”
t0“cucumber and egg plant”
Claim · model-written summary
Low temperature prolonged cucumber pollen longevity.
- Taxon
- cucumberCucumis sativust0
- Treatment
- low temperaturee0
- Outcome
- pollen longevitye1
- Direction
- prolongede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low temperature prolonged it”
t0“cucumber and egg plant”
e1“High temperature shortened the pollen longevity”
Claim · model-written summary
Cucumber pollen viability was highest in male flowers at 20-25°C.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- male flowerse0
- Outcome
- pollen viabilitye0
- Direction
- maximume0
- Value
- 20-25°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum height of pollen viability was observed in male flowers at 20-25°C”
t0“cucumber and egg plant”
Claim · model-written summary
Egg plant anther dehiscence and anthesis varied with temperature.
- Taxon
- egg plantSolanum melongenae0
- Treatment
- temperaturese0
- Outcome
- anther dehiscence and anthesise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In egg plant anther dehiscence and anthesis were variable according to temperatures”
Claim · model-written summary
Egg plant anther dehiscence generally preceded anthesis.
- Taxon
- egg plantSolanum melongenat0
- Outcome
- anther dehiscence occurred generally before anthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“But anther dehiscence occurred generally before anthesis”
t0“egg plant”
Claim · model-written summary
Egg plant pollen germinating power rose immediately after anther dehiscence.
- Taxon
- egg plantSolanum melongenat0
- Organ / stage
- anther dehiscencee0
- Outcome
- Pollen germinating powere0
- Direction
- rosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pollen germinating power rose immediately after anther dehiscence”
t0“egg plant”
Claim · model-written summary
High temperature for one day shortened egg plant pollen longevity more than low temperature.
- Taxon
- egg plantSolanum melongenat0
- Treatment
- high temperature for one daye0
- Outcome
- pollen longevitye0
- Direction
- shortenede0
- Comparator
- low temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high temperature for one day shortened pollen longevity more than low temperature”
t0“egg plant”
Claim · model-written summary
Egg plant anthers scattering abundant pollen grains were at an advanced maturation stage.
- Taxon
- egg plantSolanum melongenat0
- Organ / stage
- antherse0
- Outcome
- ad-vanced stage of maturatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“anthers scattering abundant pollen grains were in an ad-vanced stage of maturation”
t0“egg plant”
Claim · model-written summary
Prior temperature influenced egg plant pollen maturation after transfer to 20°C.
- Taxon
- egg plantSolanum melongenat0
- Treatment
- previous tempera-turee0
- Outcome
- pollen maturatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of previous tempera-ture was recoginzed in pollen maturation”
t0“egg plant”
Claim · model-written summary
Egg plant pollen viability varied with temperature from anther dehiscence.
- Taxon
- egg plantSolanum melongenat0
- Treatment
- temperaturee0
- Outcome
- pollen viabilitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“According to the temperature from anther dehis-cence, the pollen viability and longevity varied”
t0“egg plant”
Claim · model-written summary
Egg plant pollen longevity varied with temperature from anther dehiscence.
- Taxon
- egg plantSolanum melongenat0
- Treatment
- temperaturee0
- Outcome
- longevitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“According to the temperature from anther dehis-cence, the pollen viability and longevity varied”
t0“egg plant”
Claim · model-written summary
The authors estimated approximately 20°C as appropriate for egg plant pollen maturation.
- Taxon
- egg plantSolanum melongenat0
- Outcome
- temperature appropriate for pollen maturatione0
- Value
- approximately 20°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The temperature appropriate for pollen maturation seems to be approximately 20°C”
t0“egg plant”
The same questions in other papers
heat · pest · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
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cold · pest · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
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heat · pest · Solanum melongena (eggplant)Results agree
1 paper in the same direction as this paper
- negative
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.