Abstract
Poor, delayed and ununiform bud break is a major problem for peaches in greenhouse. To clarify the mechanism of breaking bud dormancy in nectarine, the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated. Treatment of intact nectarine plant with 2% thiourea(w/v) in November advanced flower bud break in the following spring by 20 days, while potassium nitrate was of no effect. But thiourea had a phytotoxic effect. The effect of ammonium nitrate was very similar to that of potassium nitrate, and flowering with the 2 nitrates was ununiform. In flower buds those were treated with dormancy_breaking agents, catalase activity was inhibited soon after treatment, whereas peroxidase activity increased, and changes of superoxide dismutase remained little. The rate of respiration in flower buds increased by chemicals during dormancy, among of which, the rate of the pentose phosphate pathway was also increased, while the rate of the Embden_Meyerh pathway decreased and the rate of tricarboxlic acid cycle changed little. The activity of glucose 6_phosphate dehydrogenase, the key enzyme in the pentose phosphate pathway(PPP), increased by dormancy_breaking agents, concomitantly with the activation of the pentose phosphate pathway.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Thiourea at 2% applied in November advanced flower bud break of nectarine by 20 days.
- Taxon
- nectarine
Prunus persica var. nucipersicae1 - Treatment
- 2% thiourea(w/v) in Novembere2
- Outcome
- flower bud breake2
- Direction
- advancede2
- Value
- 20 dayse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e2“Treatment of intact nectarine plant with 2% thiourea(w/v) in November advanced flower bud break in the following spring by 20 days, while potassium nitrate was of no effect”
Claim · model-written summary
Potassium nitrate had no effect on nectarine flower bud break.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- potassium nitratee2
- Outcome
- flower bud breake2
- Direction
- no effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e2“Treatment of intact nectarine plant with 2% thiourea(w/v) in November advanced flower bud break in the following spring by 20 days, while potassium nitrate was of no effect”
Claim · model-written summary
Thiourea had a phytotoxic effect on nectarine.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- thioureae3
- Outcome
- phytotoxic effecte3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e3“But thiourea had a phytotoxic effect”
Claim · model-written summary
Ammonium nitrate had an effect very similar to that of potassium nitrate on nectarine bud break.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- ammonium nitratee4
- Outcome
- effecte4
- Direction
- very similare4
- Comparator
- potassium nitratee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e4“The effect of ammonium nitrate was very similar to that of potassium nitrate, and flowering with the 2 nitrates was ununiform”
Claim · model-written summary
Flowering of nectarine was ununiform with the two nitrates.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- the 2 nitratese4
- Outcome
- floweringe4
- Direction
- ununiforme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e4“The effect of ammonium nitrate was very similar to that of potassium nitrate, and flowering with the 2 nitrates was ununiform”
Claim · model-written summary
Dormancy-breaking agents inhibited catalase activity in nectarine flower buds soon after treatment.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- dormancy_breaking agentse5
- Outcome
- catalase activitye5
- Direction
- inhibitede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e5“In flower buds those were treated with dormancy_breaking agents, catalase activity was inhibited soon after treatment”
Claim · model-written summary
Dormancy-breaking agents increased peroxidase activity in nectarine flower buds.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- dormancy_breaking agentse5
- Outcome
- peroxidase activitye6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e5“In flower buds those were treated with dormancy_breaking agents, catalase activity was inhibited soon after treatment”
e6“whereas peroxidase activity increased, and changes of superoxide dismutase remained little”
Claim · model-written summary
Dormancy-breaking agents changed superoxide dismutase little in nectarine flower buds.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- dormancy_breaking agentse5
- Outcome
- changes of superoxide dismutasee6
- Direction
- remained littlee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e5“In flower buds those were treated with dormancy_breaking agents, catalase activity was inhibited soon after treatment”
e6“whereas peroxidase activity increased, and changes of superoxide dismutase remained little”
Claim · model-written summary
Chemicals increased the rate of respiration in nectarine flower buds during dormancy.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- chemicalse7
- Outcome
- rate of respiratione7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e7“The rate of respiration in flower buds increased by chemicals during dormancy”
Claim · model-written summary
Chemicals increased the rate of the pentose phosphate pathway in nectarine flower buds.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- chemicalse7
- Outcome
- rate of the pentose phosphate pathwaye2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e7“The rate of respiration in flower buds increased by chemicals during dormancy”
e2“among of which, the rate of the pentose phosphate pathway was also increased”
Claim · model-written summary
Chemicals decreased the rate of the Embden-Meyerhof pathway in nectarine flower buds.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- chemicalse7
- Outcome
- rate of the Embden_Meyerh pathwaye4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e7“The rate of respiration in flower buds increased by chemicals during dormancy”
e4“while the rate of the Embden_Meyerh pathway decreased and the rate of tricarboxlic acid cycle changed little”
Claim · model-written summary
Chemicals changed the rate of the tricarboxylic acid cycle little in nectarine flower buds.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- chemicalse7
- Outcome
- rate of tricarboxlic acid cyclee4
- Direction
- changed littlee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e7“The rate of respiration in flower buds increased by chemicals during dormancy”
e4“while the rate of the Embden_Meyerh pathway decreased and the rate of tricarboxlic acid cycle changed little”
Claim · model-written summary
Dormancy-breaking agents increased glucose 6-phosphate dehydrogenase activity, concomitant with activation of the pentose phosphate pathway.
- Taxon
- nectarinePrunus persica var. nucipersicae1
- Treatment
- dormancy_breaking agentse3
- Gene
- glucose 6_phosphate dehydrogenasee3
- Outcome
- activity of glucose 6_phosphate dehydrogenasee3
- Direction
- increasede3
- Qualifier
- concomitantly with the activation of the pentose phosphate pathwaye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effect of three dormancy_breaking agents, which were applied to the surface of dormant buds in two_year old 'NJ72' nectarine ( Prunus persica L. Batsch), was investigated”
e3“The activity of glucose 6_phosphate dehydrogenase, the key enzyme in the pentose phosphate pathway(PPP), increased by dormancy_breaking agents, concomitantly with the activation of the pentose phosphate pathway”
The same questions in other papers
thiourea · crop injury · Prunus persica (peach)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.