Production of compact petunias through polyploidization
Petunia, a commercially important ornamental plant worldwide, has been subjected to breeding programs that have yielded a high number of varieties. One of the key factors in the commercial value of these varieties is plant compactness. Currently, compact petunias are obtained through the application...
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todo:paper_01676857_v129_n1_p61_Regalado2023-10-03T15:05:06Z Production of compact petunias through polyploidization Regalado, J.J. Carmona-Martín, E. Querol, V. Veléz, C.G. Encina, C.L. Pitta-Alvarez, S.I. Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Chromosomes Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Plants (botany) Breeding Plants Petunia, a commercially important ornamental plant worldwide, has been subjected to breeding programs that have yielded a high number of varieties. One of the key factors in the commercial value of these varieties is plant compactness. Currently, compact petunias are obtained through the application of expensive, harmful and short-lasting chemicals. To avoid the use of these chemicals, transgenic plants that over-express dwarf-inducing genes have been recently proposed as an alternative, but the current legislation regarding transgenic plants restricts their commercialization. In this work, we studied the effect of polyploidization in the plant architecture of Petunia axillaris, an Argentine native petunia. We developed a new polyploidization protocol that consisted in culturing petunia leaves in RL medium (MS medium supplemented with 30 g l−1 sucrose, 1 mg l−1 BA and 0.2 mg l−1 IAA) supplemented with 0.2 g l−1 colchicine for 15 days. This protocol allowed the regeneration of stable autotetraploid petunias (polyploidization rate: 29.0 ± 8,2%), which were 54% more compact than the diploid ones. Furthermore, they exhibited no variations in agronomical traits compared to the initial genotypes, except for a short delay in blooming. These autotetraploid plants can be used in different breeding programs and the polyploidization method developed can be tested in others cultivars of the genus Petunia for the same purpose. © 2017, Springer Science+Business Media Dordrecht. Fil:Veléz, C.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01676857_v129_n1_p61_Regalado |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Chromosomes Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Plants (botany) Breeding Plants |
| spellingShingle |
Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Chromosomes Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Plants (botany) Breeding Plants Regalado, J.J. Carmona-Martín, E. Querol, V. Veléz, C.G. Encina, C.L. Pitta-Alvarez, S.I. Production of compact petunias through polyploidization |
| topic_facet |
Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Chromosomes Autotetraploids Colchicine Organogenesis Ornamentals Petunia axillaris Plant architecture Plant compactness, dwarfing Plants (botany) Breeding Plants |
| description |
Petunia, a commercially important ornamental plant worldwide, has been subjected to breeding programs that have yielded a high number of varieties. One of the key factors in the commercial value of these varieties is plant compactness. Currently, compact petunias are obtained through the application of expensive, harmful and short-lasting chemicals. To avoid the use of these chemicals, transgenic plants that over-express dwarf-inducing genes have been recently proposed as an alternative, but the current legislation regarding transgenic plants restricts their commercialization. In this work, we studied the effect of polyploidization in the plant architecture of Petunia axillaris, an Argentine native petunia. We developed a new polyploidization protocol that consisted in culturing petunia leaves in RL medium (MS medium supplemented with 30 g l−1 sucrose, 1 mg l−1 BA and 0.2 mg l−1 IAA) supplemented with 0.2 g l−1 colchicine for 15 days. This protocol allowed the regeneration of stable autotetraploid petunias (polyploidization rate: 29.0 ± 8,2%), which were 54% more compact than the diploid ones. Furthermore, they exhibited no variations in agronomical traits compared to the initial genotypes, except for a short delay in blooming. These autotetraploid plants can be used in different breeding programs and the polyploidization method developed can be tested in others cultivars of the genus Petunia for the same purpose. © 2017, Springer Science+Business Media Dordrecht. |
| format |
JOUR |
| author |
Regalado, J.J. Carmona-Martín, E. Querol, V. Veléz, C.G. Encina, C.L. Pitta-Alvarez, S.I. |
| author_facet |
Regalado, J.J. Carmona-Martín, E. Querol, V. Veléz, C.G. Encina, C.L. Pitta-Alvarez, S.I. |
| author_sort |
Regalado, J.J. |
| title |
Production of compact petunias through polyploidization |
| title_short |
Production of compact petunias through polyploidization |
| title_full |
Production of compact petunias through polyploidization |
| title_fullStr |
Production of compact petunias through polyploidization |
| title_full_unstemmed |
Production of compact petunias through polyploidization |
| title_sort |
production of compact petunias through polyploidization |
| url |
http://hdl.handle.net/20.500.12110/paper_01676857_v129_n1_p61_Regalado |
| work_keys_str_mv |
AT regaladojj productionofcompactpetuniasthroughpolyploidization AT carmonamartine productionofcompactpetuniasthroughpolyploidization AT querolv productionofcompactpetuniasthroughpolyploidization AT velezcg productionofcompactpetuniasthroughpolyploidization AT encinacl productionofcompactpetuniasthroughpolyploidization AT pittaalvarezsi productionofcompactpetuniasthroughpolyploidization |
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