Abstract
The present experiments were undertaken in order to clarify the effects of a high potassium fertilization level on the occurrence of viviparous sprouting in melon fruit. Melon (Cucumis melo L. group) plants of two susceptible lines and one resistant line to viviparous sprouting were used at two different potassium concentrations. A high potassium fertilization level (12.0 mmol·L−1) resulted in a marked decrease of the occurrence of viviparous sprouting in the susceptible lines, and in the increase of the endogenous ABA content. No significant differences were observed in the seed number per fruit, the seed weight, and the percentage of seed germination at a high level of potassium fertilization. Further experiments were conducted in order to analyze the effects of exogenous ABA treatment at a low potassium fertilization level (1.5 mmol·L−1) on the occurrence of viviparous sprouting in melon fruit. At 25 days after pollination, ABA solution at different concentrations was sprayed on the fruits of the susceptible melon line grown at two different potassium fertilization levels. Even at a low potassium fertilization level, exogenous ABA application inhibited the occurrence of viviparous sprouting and increased ABA contents both in juice samples around the placenta and in the seeds. ABA treatment, however, led to a significant decrease in the seed number per fruit and in the percentage of seed germination, as a result of a marked increase in the ABA content and potassium absorption.
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Claims 7
Claim · model-written summary
High potassium fertilization markedly decreased viviparous sprouting in susceptible melon lines.
- Taxon
- Melon
.jpg?width=60)
Cucumis meloe1 - Material
- susceptible linese0
- Treatment
- high potassium fertilization level (12.0 mmol·L−1)e0
- Outcome
- occurrence of viviparous sproutinge0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“A high potassium fertilization level (12.0 mmol·L−1) resulted in a marked decrease of the occurrence of viviparous sprouting in the susceptible lines”
e1“Melon (Cucumis melo L. group) plants”
Claim · model-written summary
High potassium fertilization increased endogenous ABA content.
- Taxon
- MelonCucumis meloe1
- Treatment
- high potassium fertilization level (12.0 mmol·L−1)e0
- Outcome
- endogenous ABA contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A high potassium fertilization level (12.0 mmol·L−1) resulted in a marked decrease of the occurrence of viviparous sprouting in the susceptible lines, and in the increase of the endogenous ABA content”
e1“Melon (Cucumis melo L. group) plants”
Claim · model-written summary
High potassium fertilization produced no significant difference in seed number per fruit, seed weight, or germination percentage.
- Taxon
- MelonCucumis meloe1
- Treatment
- a high level of potassium fertilizatione0
- Outcome
- seed number per fruit, the seed weight, and the percentage of seed germinatione0
- Direction
- No significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant differences were observed in the seed number per fruit, the seed weight, and the percentage of seed germination at a high level of potassium fertilization.”
e1“Melon (Cucumis melo L. group) plants”
Claim · model-written summary
Exogenous ABA inhibited viviparous sprouting at low potassium fertilization.
- Taxon
- MelonCucumis meloe1
- Treatment
- exogenous ABA applicatione0
- Outcome
- occurrence of viviparous sproutinge0
- Direction
- inhibitede0
- Qualifier
- a low potassium fertilization levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even at a low potassium fertilization level, exogenous ABA application inhibited the occurrence of viviparous sprouting”
e1“Melon (Cucumis melo L. group) plants”
Claim · model-written summary
Exogenous ABA increased ABA contents in juice around the placenta and in seeds.
- Taxon
- MelonCucumis meloe1
- Treatment
- exogenous ABA applicatione0
- Outcome
- ABA contents both in juice samples around the placenta and in the seedse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous ABA application inhibited the occurrence of viviparous sprouting and increased ABA contents both in juice samples around the placenta and in the seeds”
e1“Melon (Cucumis melo L. group) plants”
Claim · model-written summary
ABA treatment significantly decreased seed number per fruit and germination percentage.
- Taxon
- MelonCucumis meloe1
- Treatment
- ABA treatmente0
- Outcome
- seed number per fruit and in the percentage of seed germinatione0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA treatment, however, led to a significant decrease in the seed number per fruit and in the percentage of seed germination”
e1“Melon (Cucumis melo L. group) plants”
Claim · model-written summary
The authors attributed the ABA-associated seed decreases to increased ABA content and potassium absorption.
- Taxon
- MelonCucumis meloe2
- Compound
- ABAe0
- Outcome
- seed number per fruit and in the percentage of seed germinatione1
- Qualifier
- marked increase in the ABA content and potassium absorptione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as a result of a marked increase in the ABA content and potassium absorption”
e1“ABA treatment, however, led to a significant decrease in the seed number per fruit and in the percentage of seed germination”
e2“Melon (Cucumis melo L. group) plants”
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