Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree buds
ABSTRACT The objective of this study was to evaluate the effective temperature for overcoming the dormancy of ‘Fuyu’ persimmon tree buds. Stem samples were collected three times between 2013 and 2014. Stems were maintained in a climate incubator chamber at 3, 6, 9, and 12 °C. For each temperature, five numbers of additional chilling hours (CH) (0, 240, 384, 528, and 672 CH) were studied. The experimental design was completely randomized in a 5 × 4 factorial design (chilling hours × temperatures) with four replications with 10 cuttings. The maintenance of branches at cold temperatures from 3 to 12 °C intensified endodormancy of the buds when the plants were at the beginning of endodormancy. The most effective temperatures for overcome dormancy when the buds were in transition from paradormancy to endodormancy were from 3 to 6 °C. When the buds were already in endodormancy, temperatures of 3, 6, 9, and 12 °C were effective for the accumulation of cold and overcoming dormancy. The increase in the number of chilling hours from 3 to 12 °C induced budburst and the temperature of 12 °C was able to slowly induce and overcome bud dormancy.
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Instituto Biológico
2022
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oai:scielo:S1808-165720220001002032022-08-26Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree budsPereira,Gabriely PintoFrancisco,FelipeBiasi,Luiz AntonioCarvalho,Ruy Inácio Neiva deZanette,Flávio Diospyros kaki chilling hours budburst biological test ABSTRACT The objective of this study was to evaluate the effective temperature for overcoming the dormancy of ‘Fuyu’ persimmon tree buds. Stem samples were collected three times between 2013 and 2014. Stems were maintained in a climate incubator chamber at 3, 6, 9, and 12 °C. For each temperature, five numbers of additional chilling hours (CH) (0, 240, 384, 528, and 672 CH) were studied. The experimental design was completely randomized in a 5 × 4 factorial design (chilling hours × temperatures) with four replications with 10 cuttings. The maintenance of branches at cold temperatures from 3 to 12 °C intensified endodormancy of the buds when the plants were at the beginning of endodormancy. The most effective temperatures for overcome dormancy when the buds were in transition from paradormancy to endodormancy were from 3 to 6 °C. When the buds were already in endodormancy, temperatures of 3, 6, 9, and 12 °C were effective for the accumulation of cold and overcoming dormancy. The increase in the number of chilling hours from 3 to 12 °C induced budburst and the temperature of 12 °C was able to slowly induce and overcome bud dormancy.info:eu-repo/semantics/openAccessInstituto BiológicoArquivos do Instituto Biológico v.89 20222022-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572022000100203en10.1590/1808-1657000012021 |
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Pereira,Gabriely Pinto Francisco,Felipe Biasi,Luiz Antonio Carvalho,Ruy Inácio Neiva de Zanette,Flávio |
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Pereira,Gabriely Pinto Francisco,Felipe Biasi,Luiz Antonio Carvalho,Ruy Inácio Neiva de Zanette,Flávio Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree buds |
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Pereira,Gabriely Pinto Francisco,Felipe Biasi,Luiz Antonio Carvalho,Ruy Inácio Neiva de Zanette,Flávio |
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Pereira,Gabriely Pinto |
title |
Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree buds |
title_short |
Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree buds |
title_full |
Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree buds |
title_fullStr |
Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree buds |
title_full_unstemmed |
Effective temperature for overcoming dormancy of ‘Fuyu’ persimmon tree buds |
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effective temperature for overcoming dormancy of ‘fuyu’ persimmon tree buds |
description |
ABSTRACT The objective of this study was to evaluate the effective temperature for overcoming the dormancy of ‘Fuyu’ persimmon tree buds. Stem samples were collected three times between 2013 and 2014. Stems were maintained in a climate incubator chamber at 3, 6, 9, and 12 °C. For each temperature, five numbers of additional chilling hours (CH) (0, 240, 384, 528, and 672 CH) were studied. The experimental design was completely randomized in a 5 × 4 factorial design (chilling hours × temperatures) with four replications with 10 cuttings. The maintenance of branches at cold temperatures from 3 to 12 °C intensified endodormancy of the buds when the plants were at the beginning of endodormancy. The most effective temperatures for overcome dormancy when the buds were in transition from paradormancy to endodormancy were from 3 to 6 °C. When the buds were already in endodormancy, temperatures of 3, 6, 9, and 12 °C were effective for the accumulation of cold and overcoming dormancy. The increase in the number of chilling hours from 3 to 12 °C induced budburst and the temperature of 12 °C was able to slowly induce and overcome bud dormancy. |
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Instituto Biológico |
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2022 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572022000100203 |
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