Can “Caricia” and “Princesa” apples be considered low-chilling cultivars?
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidade Estadual de Maringá
2017
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| _version_ | 1876475391503237120 |
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| author | Damián César Castro |
| author_facet | Damián César Castro |
| contents | Can “Caricia” and “Princesa” apples be considered low-chilling cultivars? Damián César Castro Norma Álvarez Paola Gabriel Marcela Buyatti Juan Carlos Favaro Norberto Gariglio Agrociencias dormancy bud break lack of chilling heat requirements Malus domestica Borkh The purpose of this work was to study the response of two apple cultivars bred for low chilling environments to artificial chilling accumulation. Two trials were carried out; in experiment one, excised shoots were randomly taken from “Caricia” and “Princesa”, and in experiment two, intact and excised shoots of “Caricia”, “Princesa” and “Gala” (control) were collected. After collection, both shoot types were exposed to artificial chilling accumulation (4.0 ± 0.5°C) from 0 to 1200 chill units (CU). Bud break of mixed buds of “Caricia” and “Princesa” was higher than 50% between 0 CU to 1200 CU, irrespective of shoot type. Bud break of “Gala” mixed buds exceeded 50% only in intact shoots after accumulating 900 CU. The mean time to bud break of “Caricia” and “Princesa” diminished with increasing chilling accumulation and stabilized after ~600 CU, depending on the type of shoot and the year of experimentation. The low-chill apple cultivars tested in this work showed shallow dormancy, but they required moderate cold accumulation (800 – 1150 CU) to fully satisfy their chilling requirements. Thus, although their shallow dormancy makes them suitable for cultivation in chill-deficient environments, they cannot be considered low-chill cultivars. 2017 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303049607007 https://www.redalyc.org/journal/3030/303049607007/ https://www.redalyc.org/journal/3030/303049607007/html/ https://www.redalyc.org/journal/3030/303049607007/303049607007.epub https://www.redalyc.org/journal/3030/303049607007/movil en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.1 Vol.39 |
| format | Artículo científico |
| id | redalyc_303049607007 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | Can “Caricia” and “Princesa” apples be considered low-chilling cultivars? Damián César Castro Agrociencias dormancy bud break lack of chilling heat requirements Malus domestica Borkh Can “Caricia” and “Princesa” apples be considered low-chilling cultivars? Damián César Castro Norma Álvarez Paola Gabriel Marcela Buyatti Juan Carlos Favaro Norberto Gariglio Agrociencias dormancy bud break lack of chilling heat requirements Malus domestica Borkh The purpose of this work was to study the response of two apple cultivars bred for low chilling environments to artificial chilling accumulation. Two trials were carried out; in experiment one, excised shoots were randomly taken from “Caricia” and “Princesa”, and in experiment two, intact and excised shoots of “Caricia”, “Princesa” and “Gala” (control) were collected. After collection, both shoot types were exposed to artificial chilling accumulation (4.0 ± 0.5°C) from 0 to 1200 chill units (CU). Bud break of mixed buds of “Caricia” and “Princesa” was higher than 50% between 0 CU to 1200 CU, irrespective of shoot type. Bud break of “Gala” mixed buds exceeded 50% only in intact shoots after accumulating 900 CU. The mean time to bud break of “Caricia” and “Princesa” diminished with increasing chilling accumulation and stabilized after ~600 CU, depending on the type of shoot and the year of experimentation. The low-chill apple cultivars tested in this work showed shallow dormancy, but they required moderate cold accumulation (800 – 1150 CU) to fully satisfy their chilling requirements. Thus, although their shallow dormancy makes them suitable for cultivation in chill-deficient environments, they cannot be considered low-chill cultivars. 2017 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303049607007 https://www.redalyc.org/journal/3030/303049607007/ https://www.redalyc.org/journal/3030/303049607007/html/ https://www.redalyc.org/journal/3030/303049607007/303049607007.epub https://www.redalyc.org/journal/3030/303049607007/movil en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.1 Vol.39 |
| title | Can “Caricia” and “Princesa” apples be considered low-chilling cultivars? |
| topic | Agrociencias dormancy bud break lack of chilling heat requirements Malus domestica Borkh |
| url | https://www.redalyc.org/articulo.oa?id=303049607007 https://www.redalyc.org/journal/3030/303049607007/ https://www.redalyc.org/journal/3030/303049607007/html/ https://www.redalyc.org/journal/3030/303049607007/303049607007.epub https://www.redalyc.org/journal/3030/303049607007/movil |