Improving the application of gibberellic acid to prolong dormancy of yam tubers (Dioscorea spp)
With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA(3)), this study compared several new methods of application with the established dipping procedure (150 mg kg(−1) for 1 h). Both GA(3)-containing soil paste (25 mg kg(−1)) and gelatinized starch (860 mg k...
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| Published in | Journal of the science of food and agriculture Vol. 83; no. 8; pp. 787 - 796 |
|---|---|
| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Chichester, UK
John Wiley & Sons, Ltd
01.06.2003
Wiley |
| Subjects | |
| Online Access | Get full text |
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| Abstract | With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA(3)), this study compared several new methods of application with the established dipping procedure (150 mg kg(−1) for 1 h). Both GA(3)-containing soil paste (25 mg kg(−1)) and gelatinized starch (860 mg kg(−1)) were applied to tuber heads of Dioscorea alata and D cayenensis-rotundata in the Ivory Coast. Soil paste, gelatinized starch and dipping consistently prolonged dormancy and reduced fresh matter losses by 23–39% in D cayenensis-rotundata 3-year means. Although dipping reduced the storage losses most efficiently, soil paste and gelatinized starch used considerably less GA(3). Both new treatments were easily prepared and quickly applied. Soil paste was most effective when the treatment was repeated before the end of dormancy. The third new method, spraying the tubers with a GA(3) solution (150 mg kg(−1)), was not effective. In general, the optimal time of application was immediately post-harvest. For D alata, treatment only 1 month after harvest was particularly ineffective, whereas D cayenensis-rotundata tubers could be treated with some effect up to the end of dormancy. To achieve extended storage periods of healthy tubers of D cayenensis-rotundata, GA(3) application may be recommended as post-harvest practice. |
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| AbstractList | With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA(3)), this study compared several new methods of application with the established dipping procedure (150 mg kg(−1) for 1 h). Both GA(3)-containing soil paste (25 mg kg(−1)) and gelatinized starch (860 mg kg(−1)) were applied to tuber heads of Dioscorea alata and D cayenensis-rotundata in the Ivory Coast. Soil paste, gelatinized starch and dipping consistently prolonged dormancy and reduced fresh matter losses by 23–39% in D cayenensis-rotundata 3-year means. Although dipping reduced the storage losses most efficiently, soil paste and gelatinized starch used considerably less GA(3). Both new treatments were easily prepared and quickly applied. Soil paste was most effective when the treatment was repeated before the end of dormancy. The third new method, spraying the tubers with a GA(3) solution (150 mg kg(−1)), was not effective. In general, the optimal time of application was immediately post-harvest. For D alata, treatment only 1 month after harvest was particularly ineffective, whereas D cayenensis-rotundata tubers could be treated with some effect up to the end of dormancy. To achieve extended storage periods of healthy tubers of D cayenensis-rotundata, GA(3) application may be recommended as post-harvest practice. Abstract With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA 3 ), this study compared several new methods of application with the established dipping procedure (150 mg kg −1 for 1 h). Both GA 3 ‐containing soil paste (25 mg kg −1 ) and gelatinized starch (860 mg kg −1 ) were applied to tuber heads of Dioscorea alata and D cayenensis‐rotundata in the Ivory Coast. Soil paste, gelatinized starch and dipping consistently prolonged dormancy and reduced fresh matter losses by 23–39% in D cayenensis‐rotundata 3‐year means. Although dipping reduced the storage losses most efficiently, soil paste and gelatinized starch used considerably less GA 3 . Both new treatments were easily prepared and quickly applied. Soil paste was most effective when the treatment was repeated before the end of dormancy. The third new method, spraying the tubers with a GA 3 solution (150 mg kg −1 ), was not effective. In general, the optimal time of application was immediately post‐harvest. For D alata , treatment only 1 month after harvest was particularly ineffective, whereas D cayenensis‐rotundata tubers could be treated with some effect up to the end of dormancy. To achieve extended storage periods of healthy tubers of D cayenensis‐rotundata , GA 3 application may be recommended as post‐harvest practice. Copyright © 2003 Society of Chemical Industry With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA3), this study compared several new methods of application with the established dipping procedure (150 mg kg−1 for 1 h). Both GA3‐containing soil paste (25 mg kg−1) and gelatinized starch (860 mg kg−1) were applied to tuber heads of Dioscorea alata and D cayenensis‐rotundata in the Ivory Coast. Soil paste, gelatinized starch and dipping consistently prolonged dormancy and reduced fresh matter losses by 23–39% in D cayenensis‐rotundata 3‐year means. Although dipping reduced the storage losses most efficiently, soil paste and gelatinized starch used considerably less GA3. Both new treatments were easily prepared and quickly applied. Soil paste was most effective when the treatment was repeated before the end of dormancy. The third new method, spraying the tubers with a GA3 solution (150 mg kg−1), was not effective. In general, the optimal time of application was immediately post‐harvest. For D alata, treatment only 1 month after harvest was particularly ineffective, whereas D cayenensis‐rotundata tubers could be treated with some effect up to the end of dormancy. To achieve extended storage periods of healthy tubers of D cayenensis‐rotundata, GA3 application may be recommended as post‐harvest practice. Copyright © 2003 Society of Chemical Industry With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA3), this study compared several new methods of application with the established dipping procedure. Both GA3-containing soil paste and gelatinized starch were applied to tuber heads of Dioscorea alata and D cayenensis-rotundata in the Ivory Coast. Soil paste, gelatinized starch and dipping consistently prolonged dormancy and reduced fresh matter losses by 23-39% in D cayenensis-rotundata 3-year means. Although dipping reduced the storage losses most efficiently, soil paste and gelatinized starch used considerably less GA3. Both new treatments were easily prepared and quickly applied. Soil paste was most effective when the treatment was repeated before the end of dormancy. The third new method, spraying the tubers with a GA3 solution, was not effective. In general, the optimal time of application was immediately post-harvest. For D alata, treatment only 1 month after harvest was particularly ineffective, whereas D cayenensis-rotundata tubers could be treated with some effect up to the end of dormancy. To achieve extended storage periods of healthy tubers of D cayenensis-rotundata, GA3 application may be recommended as post-harvest practice. |
| Author | Tschannen, Andreas B Girardin, Olivier Daouda, Dao Nindjin, Charlemagne Escher, Felix Stamp, Peter Farah, Zakaria |
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| Keywords | Monocotyledones Vegetables Yam Postharvest Shelf life Dioscorea alata storage Optimization Dioscoreaceae post-harvest technology Dioscorea cayenensis Warehousing Chemical treatment Dioscorea cayenensis-rotundata Angiospermae Food preservation Tuber Spermatophyta Gibberellic acid |
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| Snippet | With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA(3)), this study compared several new methods of application... With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA3), this study compared several new methods of application with... Abstract With the aim of reducing the cost and time needed to treat yam tubers with gibberellic acid (GA 3 ), this study compared several new methods of... |
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| SubjectTerms | Biological and medical sciences Dioscorea alata Dioscorea cayenensis-rotundata dipping dormancy Food industries Fruit and vegetable industries Fundamental and applied biological sciences. Psychology gibberellic acid new methods post-harvest technology shelf life soil spraying starch storage storage time tubers yam yams |
| Title | Improving the application of gibberellic acid to prolong dormancy of yam tubers (Dioscorea spp) |
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