Abstract
Abstract Gibberellic acid (GA 3 ) and inhibitors of gibberellin biosynthesis (daminozide and chlormequat chloride) were applied to the foliage of potato plants grown from true seed (TPS) either once at two stages of plant development, 40 and 60 days after transplantation (DAT), or repeatedly at 10 day intervals starting from the same growth stages. When GA 3 was applied towards the end of the vegetative cycle (either singly 60 DAT or repeatedly from the same date), it induced rapid breakage of tuber dormancy, a reduction in specific weight, a higher rate of respiration and increased weight loss during storage. Single applications of GA 3 early in the vegetative cycle (40 DAT) had no effect on the weight loss and specific weight of tubers during storage, whereas repeated foliar applications of GA 3 starting from the same stage resulted in the formation of tubers with a low specific weight and a high rate of weight loss during storage. However, the tubers from these treatments did not break dormancy uniformly, and, although in the early stages of storage they exhibited a high rate of respiration, this declined to the level of the control (no growth regulator applied). Although daminozide and chlormequat chloride did not affect the duration of tuber dormancy and had little or no effect on any of the other metabolic indicators studied, gibberellin is nevertheless implicated in dormancy breakage, and its application late in the growth cycle may be of practical value in cases where tubers are required for planting soon after harvest. Overall, tubers from TPS respond to plant growth regulator treatment in a similar way to those from plants grown from seed tubers. Copyright © 2007 Society of Chemical Industry
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Claims 13
Claim · model-written summary
Late gibberellic acid application rapidly broke potato tuber dormancy.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- GA 3e0
- Outcome
- tuber dormancye0
- Direction
- rapid breakagee0
- Qualifier
- towards the end of the vegetative cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When GA 3 was applied towards the end of the vegetative cycle (either singly 60 DAT or repeatedly from the same date), it induced rapid breakage of tuber dormancy”
t0“potato tubers”
Claim · model-written summary
Late gibberellic acid lowered tuber specific weight.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- GA 3e0
- Outcome
- specific weighte0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When GA 3 was applied towards the end of the vegetative cycle (either singly 60 DAT or repeatedly from the same date), it induced rapid breakage of tuber dormancy, a reduction in specific weight”
t0“potato tubers”
Claim · model-written summary
Late gibberellic acid increased tuber respiration.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- GA 3e1
- Outcome
- rate of respiratione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher rate of respiration and increased weight loss during storage”
e1“When GA 3 was applied towards the end of the vegetative cycle”
t0“potato tubers”
Claim · model-written summary
Late gibberellic acid increased tuber storage weight loss.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- GA 3e1
- Outcome
- weight loss during storagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher rate of respiration and increased weight loss during storage”
e1“When GA 3 was applied towards the end of the vegetative cycle”
t0“potato tubers”
Claim · model-written summary
One early gibberellic acid application did not affect storage weight loss or specific weight.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Single applications of GA 3 early in the vegetative cycle (40 DAT)e0
- Outcome
- weight loss and specific weight of tubers during storagee0
- Direction
- had no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single applications of GA 3 early in the vegetative cycle (40 DAT) had no effect on the weight loss and specific weight of tubers during storage”
t0“potato tubers”
Claim · model-written summary
Repeated early gibberellic acid produced tubers with low specific weight.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- repeated foliar applications of GA 3e0
- Outcome
- specific weighte0
- Direction
- lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“repeated foliar applications of GA 3 starting from the same stage resulted in the formation of tubers with a low specific weight and a high rate of weight loss during storage”
t0“potato tubers”
Claim · model-written summary
Repeated early gibberellic acid produced high storage weight loss.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- repeated foliar applications of GA 3e0
- Outcome
- rate of weight loss during storagee0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“repeated foliar applications of GA 3 starting from the same stage resulted in the formation of tubers with a low specific weight and a high rate of weight loss during storage”
t0“potato tubers”
Claim · model-written summary
Tubers from early gibberellic acid treatments did not break dormancy uniformly.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- GA 3e1
- Outcome
- did not break dormancy uniformlye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tubers from these treatments did not break dormancy uniformly”
e1“Single applications of GA 3 early in the vegetative cycle (40 DAT)”
t0“potato tubers”
Claim · model-written summary
Their initially high respiration declined to the control level in storage.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- rate of respiratione0
- Direction
- declinede0
- Comparator
- control (no growth regulator applied)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the early stages of storage they exhibited a high rate of respiration, this declined to the level of the control (no growth regulator applied)”
t0“potato tubers”
Claim · model-written summary
Daminozide and chlormequat chloride did not affect tuber dormancy duration.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- daminozide and chlormequat chloridee0
- Outcome
- duration of tuber dormancye0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“daminozide and chlormequat chloride did not affect the duration of tuber dormancy”
t0“potato tubers”
Claim · model-written summary
Daminozide and chlormequat chloride had little or no effect on other metabolic indicators.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- daminozide and chlormequat chloridee0
- Outcome
- other metabolic indicators studiede0
- Direction
- little or no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“daminozide and chlormequat chloride did not affect the duration of tuber dormancy and had little or no effect on any of the other metabolic indicators studied”
t0“potato tubers”
Claim · model-written summary
The authors suggest late gibberellin when tubers are needed for planting soon after harvest.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- gibberelline1
- Outcome
- application late in the growth cycle may be of practical valuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its application late in the growth cycle may be of practical value in cases where tubers are required for planting soon after harvest”
e1“gibberellin is nevertheless implicated in dormancy breakage”
t0“potato tubers”
Claim · model-written summary
Tubers from true potato seed responded similarly to those from seed tubers.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- respond to plant growth regulator treatment in a similar waye0
- Comparator
- plants grown from seed tuberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tubers from TPS respond to plant growth regulator treatment in a similar way to those from plants grown from seed tubers.”
t0“potato tubers”
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