African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6691

Full Length Research Paper

Study on winter bud dormancy in Red Bayberry (Myrica rubra) a forest, horticulture and ornamental tree

Syed Asghar
  • Syed Asghar
  • Agricultural Research Institute, Tarnab, Peshawar, Pakistan
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Sayed Jaffar Abbas
  • Sayed Jaffar Abbas
  • Agricultural Research Institute, Tarnab, Peshawar, Pakistan
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Ligeng Chen
  • Ligeng Chen
  • Key Laboratory of Horticultural Plant Growth, Development and Biotechnology, Ministry of Agriculture, Zhejiang University, Hangzhou, 310029, P.R. China.
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Xinhua He
  • Xinhua He
  • Key Laboratory of Horticultural Plant Growth, Development and Biotechnology, Ministry of Agriculture, Zhejiang University, Hangzhou, 310029, P.R. China.
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Yonghua Qin
  • Yonghua Qin
  • Key Laboratory of Horticultural Plant Growth, Development and Biotechnology, Ministry of Agriculture, Zhejiang University, Hangzhou, 310029, P.R. China.
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  •  Received: 29 December 2010
  •  Accepted: 12 June 2014
  •  Published: 26 August 2014

Abstract

A study to prevent or brake bud dormancy in 3 to 4 years old Myrica rubra cv. ‘Biji’ plants under controlled green house and field conditions, was conducted using GA3 and WPM nutrient media as fertigation and drainage. Two batches of the plant were shifted in different growth stages “dormant” and “non-dormant”. Plants shifted in the month of October were in the late autumn growth stage (non-dormant), while plants shifted in the month of December were in a complete bud dormancy stage. Plants of the first batch were prevented to enter bud dormancy while in the second batch bud dormancy was broken by providing warm temperature ranging 25±3°C in the green house. Green house plants took 2-4 weeks to initiate the growth flushes as compared to 17 to 18 weeks taken for the field plants. Buds break and leafs shed in the green house were observed earlier in the plants drained with nutrients media followed by fertigation, while spraying of GA3 delayed leaf shed and increased shoot length both in the green house and in the field. GA3 treated plants sprouted few days earlier than that of control.  Significant differences were observed in initial sprouts among the treatments of GA3, nutrient fertigation and nutrient drainage as compared to the control plants. Similarity in days to initial sprout was observed in both the nutrient fertigation and drainage methods with a slight variation of one or two day’s differences. Nutrients used as drainage showed outstanding results than fertigation.

 

Key words: Bud dormancy, gibberellic acid, GA3, Myrica  rubra, warm temperature.