INFLUENCE OF INTERRUPTED AND CONTINUOUS CHILLING AND HEATING ON BUDBREAK RATE OF THE ‘SULTANA’ VINE

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RAJABPOUR F.; NAZEMIEH A.; GERIGOURIAN V.; MOGHADAM MOHAMMAD

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Journal: Iranian Journal of Horticultural Science and Technology Year:2005 | Volume:6 | Issue:1 Page(s): 27-38

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Title

INFLUENCE OF INTERRUPTED AND CONTINUOUS CHILLING AND HEATING ON BUDBREAK RATE OF THE ‘SULTANA’ VINE

Author(s)

RAJABPOUR F. | NAZEMIEH A. | GERIGOURIAN V. | MOGHADAM MOHAMMAD | Issue Writer Certificate

Keywords

BUDBREAKQ4

CHILLINGQ3

GRAPEVINEQ3

HEATQ4

SPEED OF BUDBREAKQ4

Abstract

Several experiments were conducted in Khalatpoushan Station of the University of Tabriz using completely randomized design with three treatments and three replications in order to identify the effects of interrupted and continuous CHILLING and HEATing on BUDBREAK rate in ‘Sultana’ GRAPEVINEs in 2001. The GRAPEVINE shoots were removed on the 18th of Oct. in 2001 and 28th of Jan. in 2002. In control treatment, to save the CHILLING requirements of buds, cuttings were exposed to continuous CHILLING at 4oC for 9 days (200 hr). In order to interrupt continuous CHILLING in the other two treatments, after completing one-and two-thirds of CHILLING requirements of buds at 4oC, cuttings were exposed to 20 and 25oC for 1, 2 and 7 days and then were exposed to 4oC until completion of CHILLING requirements of the buds. The results indicated that treatment with interrupted CHILLING at 25oC for 7 days was better than the continuous CHILLING treatment at 4oC for 9 days in breaking dormancy of GRAPEVINE buds. Also, continuous CHILLING at 20oC for 1 or 2 days after the completion of two-thirds (6 days) of CHILLING requirements of buds, caused reductions in BUDBREAK percentage and BUDBREAK rate as compared to the control treatment (9 days continuous CHILLING). Therefore, interrupted CHILLING treatment at 20oC for 1 or 2 days following the completion of one-third (3 days) of CHILLING requirement of buds was similar to the continuous CHILLING treatment for BUDBREAK percentage and rate. Also, the results indicated that the effect of high temperature during the CHILLING period on BUDBREAK rate of GRAPEVINEs buds depends on the dormancy stage of the buds. Therefore, cuttings on 28th of Jan. 2002, on which buds were finished their dormancy period, high temperature (20oC) for 1 day during the CHILLING period of 9 days did not affect BUDBREAK rate. In another experiment, to study the effect of low temperature on the HEATing requirement of buds for BUDBREAK, cuttings were obtained on 12th of Feb. 2002. Analysis of data showed that interrupted HEATing at 4oC did not affect the amount of HEAT requirement for the days to 50% BUDBREAK as compared to continuous HEATing treatment. It can be concluded that accumulated HEAT for BUDBREAK is accumulative.

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APA: Copy

RAJABPOUR, F., NAZEMIEH, A., GERIGOURIAN, V., & MOGHADAM, MOHAMMAD. (2005). INFLUENCE OF INTERRUPTED AND CONTINUOUS CHILLING AND HEATING ON BUDBREAK RATE OF THE ‘SULTANA’ VINE. IRANIAN JOURNAL OF HORTICULTURAL SCIENCE AND TECHNOLOGY, 6(1), 27-38. SID. https://sid.ir/paper/80693/en

Vancouver: Copy

RAJABPOUR F., NAZEMIEH A., GERIGOURIAN V., MOGHADAM MOHAMMAD. INFLUENCE OF INTERRUPTED AND CONTINUOUS CHILLING AND HEATING ON BUDBREAK RATE OF THE ‘SULTANA’ VINE. IRANIAN JOURNAL OF HORTICULTURAL SCIENCE AND TECHNOLOGY[Internet]. 2005;6(1):27-38. Available from: https://sid.ir/paper/80693/en

IEEE: Copy

F. RAJABPOUR, A. NAZEMIEH, V. GERIGOURIAN, and MOHAMMAD MOGHADAM, “INFLUENCE OF INTERRUPTED AND CONTINUOUS CHILLING AND HEATING ON BUDBREAK RATE OF THE ‘SULTANA’ VINE,” IRANIAN JOURNAL OF HORTICULTURAL SCIENCE AND TECHNOLOGY, vol. 6, no. 1, pp. 27–38, 2005, [Online]. Available: https://sid.ir/paper/80693/en

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