The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus Varieties
Gladiolus is commonly propagated from corms. The multiplication rate of corms is low and to increase the propagation rate, we examined a combination of apical bud removal and the application of growth regulators. The experiments were conducted in two varieties, ‘Rose Supreme’ and ‘White Prosperity’,...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-08-01
|
| Series: | Horticulturae |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2311-7524/8/9/789 |
| _version_ | 1797487676829466624 |
|---|---|
| author | Magdy Mohamed Khalafalla Mahmoud Abdelnabi Hegazi Ahmed Mohamed Eltarawy Mohamed Refaat Magouz Hamdy Hassan Elzaim Flemming Yndgaard Svein Øivind Solberg |
| author_facet | Magdy Mohamed Khalafalla Mahmoud Abdelnabi Hegazi Ahmed Mohamed Eltarawy Mohamed Refaat Magouz Hamdy Hassan Elzaim Flemming Yndgaard Svein Øivind Solberg |
| author_sort | Magdy Mohamed Khalafalla |
| collection | DOAJ |
| description | Gladiolus is commonly propagated from corms. The multiplication rate of corms is low and to increase the propagation rate, we examined a combination of apical bud removal and the application of growth regulators. The experiments were conducted in two varieties, ‘Rose Supreme’ and ‘White Prosperity’, and over two seasons. The apical buds on the planting corms were either removed or left intact before the same corms were soaked in a suspension with either 100 ppm of benzyladenine (BA), 100 ppm of gibberellic acid (GA3), or pure water. The results showed that apical bud removal increased the number of corms and shoots. GA3 had limited the effect on corm and shoot production, but instead resulted in increased total leaf area and leaf weight per shoot. BA, on the other hand, increased the number of corms and shoots. Overall, the removal of the apical bud plus application of BA increased the number of corms and shoots but reduced the average corm diameter and leaf weight per shoot. This was clearer in ‘Rose Supreme’ than in ‘White Prosperity’. To maximize flower production for the coming season, farmers need to produce a high number of planting corms, but they also need to balance this with a sufficient corm size and the production of flowers of good quality. The application of growth regulators in combination with apical bud removal should be fine-tuned to avoid a situation that leads to the production of too many small or too few large corms. |
| first_indexed | 2024-03-09T23:52:05Z |
| format | Article |
| id | doaj.art-e598884b27ef42b08f7c09e30394d2d1 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-09T23:52:05Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-e598884b27ef42b08f7c09e30394d2d12023-11-23T16:33:40ZengMDPI AGHorticulturae2311-75242022-08-018978910.3390/horticulturae8090789The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus VarietiesMagdy Mohamed Khalafalla0Mahmoud Abdelnabi Hegazi1Ahmed Mohamed Eltarawy2Mohamed Refaat Magouz3Hamdy Hassan Elzaim4Flemming Yndgaard5Svein Øivind Solberg6Horticulture Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, EgyptHorticulture Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, EgyptHorticulture Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, EgyptHorticultural Research Institute, Agricultural Research Center, Giza 12619, EgyptHorticulture Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, EgyptFaculty of Applied Ecology, Agriculture and Biotechnology, Inland Norway University of Applied Sciences, 2322 Ridabu, NorwayFaculty of Applied Ecology, Agriculture and Biotechnology, Inland Norway University of Applied Sciences, 2322 Ridabu, NorwayGladiolus is commonly propagated from corms. The multiplication rate of corms is low and to increase the propagation rate, we examined a combination of apical bud removal and the application of growth regulators. The experiments were conducted in two varieties, ‘Rose Supreme’ and ‘White Prosperity’, and over two seasons. The apical buds on the planting corms were either removed or left intact before the same corms were soaked in a suspension with either 100 ppm of benzyladenine (BA), 100 ppm of gibberellic acid (GA3), or pure water. The results showed that apical bud removal increased the number of corms and shoots. GA3 had limited the effect on corm and shoot production, but instead resulted in increased total leaf area and leaf weight per shoot. BA, on the other hand, increased the number of corms and shoots. Overall, the removal of the apical bud plus application of BA increased the number of corms and shoots but reduced the average corm diameter and leaf weight per shoot. This was clearer in ‘Rose Supreme’ than in ‘White Prosperity’. To maximize flower production for the coming season, farmers need to produce a high number of planting corms, but they also need to balance this with a sufficient corm size and the production of flowers of good quality. The application of growth regulators in combination with apical bud removal should be fine-tuned to avoid a situation that leads to the production of too many small or too few large corms.https://www.mdpi.com/2311-7524/8/9/789apical dominancebenzyladeninecormfloweringgibberellic acidgrowth regulator |
| spellingShingle | Magdy Mohamed Khalafalla Mahmoud Abdelnabi Hegazi Ahmed Mohamed Eltarawy Mohamed Refaat Magouz Hamdy Hassan Elzaim Flemming Yndgaard Svein Øivind Solberg The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus Varieties Horticulturae apical dominance benzyladenine corm flowering gibberellic acid growth regulator |
| title | The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus Varieties |
| title_full | The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus Varieties |
| title_fullStr | The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus Varieties |
| title_full_unstemmed | The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus Varieties |
| title_short | The Effects of Growth Regulators and Apical Bud Removal on Growth, Flowering, and Corms Production of Two Gladiolus Varieties |
| title_sort | effects of growth regulators and apical bud removal on growth flowering and corms production of two gladiolus varieties |
| topic | apical dominance benzyladenine corm flowering gibberellic acid growth regulator |
| url | https://www.mdpi.com/2311-7524/8/9/789 |
| work_keys_str_mv | AT magdymohamedkhalafalla theeffectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT mahmoudabdelnabihegazi theeffectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT ahmedmohamedeltarawy theeffectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT mohamedrefaatmagouz theeffectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT hamdyhassanelzaim theeffectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT flemmingyndgaard theeffectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT sveinøivindsolberg theeffectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT magdymohamedkhalafalla effectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT mahmoudabdelnabihegazi effectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT ahmedmohamedeltarawy effectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT mohamedrefaatmagouz effectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT hamdyhassanelzaim effectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT flemmingyndgaard effectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties AT sveinøivindsolberg effectsofgrowthregulatorsandapicalbudremovalongrowthfloweringandcormsproductionoftwogladiolusvarieties |