Abstract
The poor set of normal seeded berries in Tione' grapes is attributed to the small number of fertilized eggs in the ovules. To examine the effect of nutrients and phytohormones on ovule development and pollen tube growth, young florets, about one week before bloom, were cultured in vitro on several media. Florets of 'Muscat of Alexandria', which is known to be a good setting cultivar, were cultured for comparison. The ovary size became larger in both cultivars as the concentration of inorganic components of Nitsch and MS media or only KNO3 of the Nitsch medium was increased. Ovule development and pollen tube growth, however, were inhibited in these enlarged ovaries, especially in 'Pione' pistils. The addition of 1~10 ppm NAA, GA or BA to the Nitsch medium inhibited ovule development and pollen tube growth in pistils of 'Pione', but we observed no significant change in ovary size. Pollen tube growth was inhibited in pistils of 'Muscat of Alexandria' cultured on medium containing water extracts of 'Pione' pistils; however, ovary growth and ovule development were not affected. From these results, we concluded that in florets of 'Pione', an excess of nitrogenous nutrients leads to severe inhibition of ovule development and pollen tube growth. Pollen tube growth inhibitors, detected abundantly in 'Pione' pistil extracts, do not appear to be inorganic or hormonal substances.
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Claims 15
Claim · model-written summary
Increasing inorganic medium components enlarged ovaries in both cultivars.
- Taxon
- Grapet0
- Treatment
- concentration of inorganic components of Nitsch and MS mediae0
- Outcome
- ovary sizee0
- Direction
- largere0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The ovary size became larger in both cultivars as the concentration of inorganic components of Nitsch and MS media or only KNO3 of the Nitsch medium was increased.”
Claim · model-written summary
Increasing KNO3 alone enlarged ovaries in both cultivars.
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The ovary size became larger in both cultivars as the concentration of inorganic components of Nitsch and MS media or only KNO3 of the Nitsch medium was increased.”
Claim · model-written summary
Ovule development was inhibited in enlarged ovaries, especially in 'Pione'.
- Taxon
- Grapet0
- Material
- 'Pione'e0
- Treatment
- enlarged ovariese0
- Outcome
- Ovule developmente0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“Ovule development and pollen tube growth, however, were inhibited in these enlarged ovaries, especially in 'Pione' pistils.”
Claim · model-written summary
Pollen tube growth was inhibited in enlarged ovaries, especially in 'Pione'.
- Taxon
- Grapet0
- Material
- 'Pione'e0
- Treatment
- enlarged ovariese0
- Outcome
- pollen tube growthe0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“Ovule development and pollen tube growth, however, were inhibited in these enlarged ovaries, especially in 'Pione' pistils.”
Claim · model-written summary
NAA inhibited ovule development and pollen tube growth in Pione pistils.
- Taxon
- Grapet0
- Material
- 'Pione'e0
- Treatment
- 1~10 ppm NAAe0
- Outcome
- ovule development and pollen tube growthe0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The addition of 1~10 ppm NAA, GA or BA to the Nitsch medium inhibited ovule development and pollen tube growth in pistils of 'Pione', but we observed no significant change in ovary size.”
Claim · model-written summary
GA inhibited ovule development and pollen tube growth in Pione pistils.
- Taxon
- Grapet0
- Material
- 'Pione'e0
- Treatment
- GAe0
- Outcome
- ovule development and pollen tube growthe0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The addition of 1~10 ppm NAA, GA or BA to the Nitsch medium inhibited ovule development and pollen tube growth in pistils of 'Pione', but we observed no significant change in ovary size.”
Claim · model-written summary
BA inhibited ovule development and pollen tube growth in Pione pistils.
- Taxon
- Grapet0
- Material
- 'Pione'e0
- Treatment
- BAe0
- Outcome
- ovule development and pollen tube growthe0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The addition of 1~10 ppm NAA, GA or BA to the Nitsch medium inhibited ovule development and pollen tube growth in pistils of 'Pione', but we observed no significant change in ovary size.”
Claim · model-written summary
NAA produced no significant change in Pione ovary size.
- Taxon
- Grapet0
- Material
- 'Pione'e0
- Treatment
- 1~10 ppm NAAe0
- Outcome
- ovary sizee0
- Direction
- no significant changee0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The addition of 1~10 ppm NAA, GA or BA to the Nitsch medium inhibited ovule development and pollen tube growth in pistils of 'Pione', but we observed no significant change in ovary size.”
Claim · model-written summary
GA produced no significant change in Pione ovary size.
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The addition of 1~10 ppm NAA, GA or BA to the Nitsch medium inhibited ovule development and pollen tube growth in pistils of 'Pione', but we observed no significant change in ovary size.”
Claim · model-written summary
BA produced no significant change in Pione ovary size.
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“The addition of 1~10 ppm NAA, GA or BA to the Nitsch medium inhibited ovule development and pollen tube growth in pistils of 'Pione', but we observed no significant change in ovary size.”
Claim · model-written summary
Pione pistil water extracts inhibited pollen tube growth in Muscat of Alexandria.
- Taxon
- Grapet0
- Material
- 'Muscat of Alexandria'e0
- Treatment
- water extracts of 'Pione' pistilse0
- Outcome
- Pollen tube growthe0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“Pollen tube growth was inhibited in pistils of 'Muscat of Alexandria' cultured on medium containing water extracts of 'Pione' pistils; however, ovary growth and ovule development were not affected.”
Claim · model-written summary
Pione pistil water extracts did not affect ovary growth or ovule development in Muscat of Alexandria.
- Taxon
- Grapet0
- Material
- 'Muscat of Alexandria'e0
- Treatment
- water extracts of 'Pione' pistilse0
- Outcome
- ovary growth and ovule developmente0
- Direction
- not affectede0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“Pollen tube growth was inhibited in pistils of 'Muscat of Alexandria' cultured on medium containing water extracts of 'Pione' pistils; however, ovary growth and ovule development were not affected.”
Claim · model-written summary
The authors concluded that excess nitrogenous nutrients severely inhibit ovule development and pollen tube growth in Pione.
- Taxon
- Grapet0
- Material
- 'Pione'e0
- Treatment
- an excess of nitrogenous nutrientse0
- Outcome
- ovule development and pollen tube growthe0
- Direction
- severe inhibitione0
Not reportedComparator
Verbatim
t0“Excised Grape Pistils”
e0“From these results, we concluded that in florets of 'Pione', an excess of nitrogenous nutrients leads to severe inhibition of ovule development and pollen tube growth.”
Claim · model-written summary
Pollen tube growth inhibitors were abundant in Pione pistil extracts.
Verbatim
t0“Excised Grape Pistils”
e0“Pollen tube growth inhibitors, detected abundantly in 'Pione' pistil extracts, do not appear to be inorganic or hormonal substances.”
Claim · model-written summary
The pollen tube growth inhibitors in Pione pistil extracts appeared neither inorganic nor hormonal.
Verbatim
t0“Excised Grape Pistils”
e0“Pollen tube growth inhibitors, detected abundantly in 'Pione' pistil extracts, do not appear to be inorganic or hormonal substances.”
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