Estimation of Endodormancy Completion Stage and Bud Burst Stage in Forced Culture of Japanese Persimmon (Diospyros kaki Thunb.) 'Tonewase' by Developmental Rate Model

輝彦, 杉村; 孝行, 浦崎; 順一, 今川; 勝, 脇坂

doi:10.2503/hrj.5.45

Hort. Res. (Japan)

2006

DOI: 10.2503/hrj.5.45

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Estimation of Endodormancy Completion Stage and Bud Burst Stage in Forced Culture of Japanese Persimmon (Diospyros kaki Thunb.) 'Tonewase' by Developmental Rate Model

杉村輝彦¹,

浦崎孝行²,

今川順一³

et al.

Abstract: SummaryWe developed a Developmental Rate Model (DVR model) of Japanese persimmon (Diospyros kaki Thunb.), which was estimated by bud burst rate of cuttings chilled at constant temperatures (0, 5, 8, 11 and 18°C). Temperatures at 5-8°C were considered most effective for breaking bud endodormancy in 'Tonewase'. Based on this model, the endodormancy completion stage of 'Tonewase' was assumed to be December 19-30 in Nara. Bud burst in forced culture, heated with the minimal air temperature in a greenhouse maintain… Show more

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Cited by 5 publications

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“…It has also been used to predict the timing of bud burst in japanese persimmon (Diospyros kaki Thunb.) (Sugimura et al, 2006).…”

mentioning

confidence: 99%

Blooming Date Predictions Based on Japanese Apricot ‘Nanko’ Flower Bud Responses to Temperatures during Dormancy

Kitamura

Yamane

Yukimori

et al. 2017

horts

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Flower bud development and the timing of blooming are mainly affected by genotype-dependent chilling requirements (CRs) during endodormancy and subsequent heat requirements (HRs) during ecodormancy. However, little information is available regarding the responses of flower buds to temperatures during endodormancy and ecodormancy in japanese apricot. We exposed japanese apricot ‘Nanko’ trees to various temperatures to estimate the CRs and HRs using development index (DVI) models specific for the endodormant (DVIendo) and ecodormant (DVIeco) stages. These models were based on the experimentally determined development rate (DVR). The DVRendo value was calculated as the reciprocal of the chilling time required to break endodormancy. The relationship between the DVRendo value and temperature was estimated using a three-dimensional curve. Our results indicated that 5–6 °C was the most effective temperature for breaking endodormancy in ‘Nanko’ flower buds. Additionally, exposure to −3 °C negatively affected endodormancy release, whereas 15 °C had no effect. We also determined that the DVReco values for temperatures between 5 and 20 °C were the reciprocal values of the time required for blooming after endodormancy release. The values outside this range were estimated using linear functions. The DVI was defined as the sum of the DVR values ranging from 0 to 1. Models for predicting the blooming date were constructed using the functions of sequentially combined DVIendo and DVIeco models. The accuracy of each model was assessed by comparing the predicted and actual blooming dates. The prediction of the model in which DVIeco = 1 corresponded to a 40% blooming level and DVIeco = 0 was set to DVIendo = 0.5 had the lowest root mean square error (RMSE) value (i.e., 3.11) for trees in commercial orchards exposed to different climates. Our results suggest that the developed model may have practical applications.

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“…It has also been used to predict the timing of bud burst in japanese persimmon (Diospyros kaki Thunb.) (Sugimura et al, 2006).…”

mentioning

confidence: 99%

Blooming Date Predictions Based on Japanese Apricot ‘Nanko’ Flower Bud Responses to Temperatures during Dormancy

Kitamura

Yamane

Yukimori

et al. 2017

horts

View full text Add to dashboard Cite

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Examination of Heating Condition for Promotion of Bud Burst on Japanese Persimmon (<i>Diospyros kaki</i> Thunb.) ‘Tonewase’ in the Forced Culture

輝彦¹,

勝²,

順一³

2007

J. Agric. Meteorol.

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This study investigated forcing conditions for promoting bud bursting in the forced culture of the 'Tonewase' persimmon. Bud burst occurred earlier with the advance of the forcing starts when cuttings, with the Development Index (DVI) for endodormancy breaking of 'Tonewase' persimmon greater than 0.60, were forced at 18 or 24 . Furthermore, bud burst occurred earlier with the advance of forcing starts when cuttings, with the DVI were greater than 0.91, were forced at 11 or 15 . Pre-heating to 5 or 8 , most effective temperatures for endodormancy breaking before forcing at 15 , similarly promoted bud burst of cuttings. The bud burst rate of cuttings was examined using pre-heating at 8 for 9-40 days before 15 forcing between 13 December and 12 January from 2003 to 2005. Pre-heating at 8 for 20 days before 15 forcing, to render the DVI as greater than 1, promoted bud burst of cuttings five days earlier compared with no pre-heating. Pre-heating of 'Tonewase' persimmon trees in the air temperature range between 6-8 and 10-15 in a greenhouse for 17-29 days induced the bud burst stage two to five days earlier compared with no pre-heating. These results suggest that, in the forcing culture of the 'Tonewase' persimmon, the forcing start date and set temperature can be determined according to the degree of endodormancy completion based on the DVR model, and that bud break can be further advanced by pre-heating at temperatures effective for endodormancy completion before forcing.

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Dormancy Period in Japanese Pepper (Zanthoxylum piperitum (L.) DC. f. inerme Makino) Tree

隆昭¹,

仁巳²,

浩和³

et al. 2007

Hort. Res. (Japan)

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Estimation of Endodormancy Completion Stage and Bud Burst Stage in Forced Culture of Japanese Persimmon (Diospyros kaki Thunb.) 'Tonewase' by Developmental Rate Model

Cited by 5 publications

References 5 publications

Blooming Date Predictions Based on Japanese Apricot ‘Nanko’ Flower Bud Responses to Temperatures during Dormancy

Blooming Date Predictions Based on Japanese Apricot ‘Nanko’ Flower Bud Responses to Temperatures during Dormancy

Examination of Heating Condition for Promotion of Bud Burst on Japanese Persimmon (<i>Diospyros kaki</i> Thunb.) ‘Tonewase’ in the Forced Culture

Dormancy Period in Japanese Pepper (Zanthoxylum piperitum (L.) DC. f. inerme Makino) Tree

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Estimation of Endodormancy Completion Stage and Bud Burst Stage in Forced Culture of Japanese Persimmon (Diospyros kaki Thunb.) 'Tonewase' by Developmental Rate Model

Cited by 5 publications

References 5 publications

Blooming Date Predictions Based on Japanese Apricot ‘Nanko’ Flower Bud Responses to Temperatures during Dormancy

Blooming Date Predictions Based on Japanese Apricot ‘Nanko’ Flower Bud Responses to Temperatures during Dormancy

Examination of Heating Condition for Promotion of Bud Burst on Japanese Persimmon (<i>Diospyros kaki</i> Thunb.) &lsquo;Tonewase&rsquo; in the Forced Culture

Dormancy Period in Japanese Pepper (Zanthoxylum piperitum (L.) DC. f. inerme Makino) Tree

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Examination of Heating Condition for Promotion of Bud Burst on Japanese Persimmon (<i>Diospyros kaki</i> Thunb.) ‘Tonewase’ in the Forced Culture