Journal of Integrative Agriculture ›› 2011, Vol. 10 ›› Issue (12): 1881-1886.DOI: 10.1016/S1671-2927(11)60188-0

• 论文 • 上一篇    下一篇

Effects of Photoperiod on Alternative Respiration Pathway in Nectarine Flower Buds During Dormancy Induction

 LI Dong-mei, TAN Yue, YU Qin, CHEN Xiu-de, LI Ling, ZHANG Hai-sen , GAO Dong-sheng   

  1. 1. State Key Laboratory of Crop Biology/College of Horticulture Science and Engineering/Research Center for Apple Engineering and Technology, Shandong Agricultural University, Tai’an 271018, P.R.China
    2. State Key Laboratory of Crop Biology/College of Life Sciences, Shandong Agricultural University, Tai’an 271018, P.R.China
  • 收稿日期:2010-06-29 出版日期:2011-12-01 发布日期:2011-12-19
  • 通讯作者: Correspondence ZHANG Hai-sen, Tel: +86-538-8242657, E-mail: hhss2002@sdau.edu.cn; GAO Dong-sheng, Tel: +86-538-8249659, E-mail: dsgao@sdau.edu.cn
  • 作者简介:LI Dong-mei, Tel: +86-538-8246263, E-mail: dmli2002@163.com
  • 基金资助:

    This study was supported by the Key Projects in the National Science & Technology Pillar Program of China during the 11th Five-Year Plan period (2006BAD07B06) and the Sci-Tech Innovation Fund for Young Scientists of Shandong Agricultural University, China (23658).

Effects of Photoperiod on Alternative Respiration Pathway in Nectarine Flower Buds During Dormancy Induction

 LI Dong-mei, TAN Yue, YU Qin, CHEN Xiu-de, LI Ling, ZHANG Hai-sen , GAO Dong-sheng   

  1. 1. State Key Laboratory of Crop Biology/College of Horticulture Science and Engineering/Research Center for Apple Engineering and Technology, Shandong Agricultural University, Tai’an 271018, P.R.China
    2. State Key Laboratory of Crop Biology/College of Life Sciences, Shandong Agricultural University, Tai’an 271018, P.R.China
  • Received:2010-06-29 Online:2011-12-01 Published:2011-12-19
  • Contact: Correspondence ZHANG Hai-sen, Tel: +86-538-8242657, E-mail: hhss2002@sdau.edu.cn; GAO Dong-sheng, Tel: +86-538-8249659, E-mail: dsgao@sdau.edu.cn
  • About author:LI Dong-mei, Tel: +86-538-8246263, E-mail: dmli2002@163.com
  • Supported by:

    This study was supported by the Key Projects in the National Science & Technology Pillar Program of China during the 11th Five-Year Plan period (2006BAD07B06) and the Sci-Tech Innovation Fund for Young Scientists of Shandong Agricultural University, China (23658).

摘要: Characteristics of dormancy induction and alternative respiration pathway (also known as cyanide-resistant respiration) of nectarine flower buds in different photoperiods were studied to determine the function of photoperiod and alternative respiration pathway in dormancy induction. Oxygen-electrode system and respiratory inhibitors were used to measure total respiratory rates and rates of alternative respiration pathway. The results showed that total respiration rate (Vt) in flower buds showed to be double hump-shaped curves. Short day raised, brought the first-hump of Vt forward and delayed the second-hump, while long day delayed the whole curve. The capacity (Valt) and activity (ρValt) of SD and LD changed synchronously and both showed to be double hump-shaped curves. Short day made the first climax of Valt and ρValt existed much earlier, while long day increased their rates significantly. The length of day had little effects on the later period climax. Long day also increased the contributions of alternative respiration pathway in total respiration rate (ρValt/Vt). The changes in alternative respiration pathway were correlated with the induction of dormancy and adjusted by photoperiod. Short day promoted dormancy induction of nectarine trees, while long day delayed it.

关键词: photoperiod, nectarine flower buds, dormancy induction, alternative respiration pathway

Abstract: Characteristics of dormancy induction and alternative respiration pathway (also known as cyanide-resistant respiration) of nectarine flower buds in different photoperiods were studied to determine the function of photoperiod and alternative respiration pathway in dormancy induction. Oxygen-electrode system and respiratory inhibitors were used to measure total respiratory rates and rates of alternative respiration pathway. The results showed that total respiration rate (Vt) in flower buds showed to be double hump-shaped curves. Short day raised, brought the first-hump of Vt forward and delayed the second-hump, while long day delayed the whole curve. The capacity (Valt) and activity (ρValt) of SD and LD changed synchronously and both showed to be double hump-shaped curves. Short day made the first climax of Valt and ρValt existed much earlier, while long day increased their rates significantly. The length of day had little effects on the later period climax. Long day also increased the contributions of alternative respiration pathway in total respiration rate (ρValt/Vt). The changes in alternative respiration pathway were correlated with the induction of dormancy and adjusted by photoperiod. Short day promoted dormancy induction of nectarine trees, while long day delayed it.

Key words: photoperiod, nectarine flower buds, dormancy induction, alternative respiration pathway