Data/hora: 01/06/2024 14:24:22

Biblioteca(s): | Embrapa Clima Temperado.
Data corrente: | 24/02/2022
Data da última atualização: | 25/02/2022
Autoria: | MILECH, C. G.; DINI, M.; FRANZON, R. C.; RASEIRA, M. do C. B.
Afiliação: | CHAIANE GOVEA MILECH; MAXIMILIANO DINI; RODRIGO CEZAR FRANZON, CPACT; MARIA DO CARMO BASSOLS RASEIRA, CPACT.
Título: | Chilling requirement of four peach cultivars estimated by changes in flower bud weight.
Ano de publicação: | 2022
Fonte/Imprenta: | Revista Ceres, Viçosa, v. 69, n. 1, p. 22-30, jan/feb. 2022.
DOI: | 10.1590/0034-737X202269010004
Idioma: | Inglês
Conteúdo: | The adaptation of temperate fruit crops is a challenge being increased by the global warming. Chilling requirement is a key factor for adaptation. The objective of this study was to estimate the chilling requirement of peach cultivars BRS Bonão, Esmeralda, Granada and Eragil, using theTabuenca test. Chilling accumulation was computed using four different chilling hour (d+ 7.2 ºC and d+ 11 ºC) models; and chill units using the Low Chill model and theTaiwan model. The fresh bud weight and bud water contents were also evaluated. The Tabuenca test (based on differences in bud &#769;s dry weight) showed a fairly good efficiency for estimating the end of dormancy in peach. However, under mild winter conditions, it is better to use fresh bud weights. Either one of three chilling accumulation computation models (temperature d+ 7.2 °C, d+ 11°C, or Taiwan model) is suitable to classify comparatively dif ferent cultivars, but none is accurate enough to conclude on the adaptation of a given cultivar to a specific site. Using hours of temperatures d+ 11 ºC: ?BRS Bonão? needed around 180 hours for dormancy release; ?Esmeralda? around 250 hours; ?Granada? between 300 and 400 hours, and ?Eragil? more than 500 hours
Palavras-Chave: | BRS Bonão; Eragil; Esmeralda; Granada.
Thesagro: | Frio; Pêssego; Prunus Persica.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/231948/1/Artigo-Chilling-requirement-of-four.pdf
Registro original: | Embrapa Clima Temperado (CPACT)
Exemplares: | CPACT - (22172-1) - UPC - AP - DD -  -  -  - DIS