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林业科学 ›› 2006, Vol. 42 ›› Issue (8): 144-146.doi: 10.11707/j.1001-7488.20060824

• 研究简报 • 上一篇    

枣疯植原体的分布特点及周年消长规律

赵锦1 刘孟军2 周俊义2 代丽2   

  1. 1.河北农业大学生命科学学院,保定071000;2.河北农业大学中国枣研究中心,保定071001
  • 收稿日期:2005-01-04 修回日期:1900-01-01 出版日期:2006-08-25 发布日期:2006-08-25

Distribution and Year-Round Concentration Variation of Jujube Witches' Broom (JWB) Phytoplasma in the Plant of Chinese Jujube

Zhao Jin1,Liu Mengjun2,Zhou Junyi2,Dai Li2   

  1. 1. College of Life Science, Agricultural University of Hebei Baoding 071000; 2. Research Center of Chinese Jujube, Agricultural University of Hebei Baoding 071001
  • Received:2005-01-04 Revised:1900-01-01 Online:2006-08-25 Published:2006-08-25

关键词: 枣疯病, 植原体, 分布特点, 周年消长规律

Abstract:

Jujube Witches' Broom (JWB), caused by phytoplasma, is the most serious and destructive disease of Chinese Jujube. The distribution and year-round concentration variation of JWB phytoplasma were studied under fluorescence microscope using DAPI. The results showed that phytoplasma might exist in the sieve tubes of all organs, phytoplasma contents varied with organs, sides of organs and growing seasons, phytoplasma usually existed in the roots of the same direction with diseased branches. The uneven-distribution could be observed much often in lightly diseased trees than in seriously diseased one. In roots, the content of phytoplasma was highest in May, relatively low in June, July and August, and lowest in December to March. In branches, the content of phytoplasma increased gradually with the rising of the temperature after bud sprouting in April and May, then increased dramatically and reached peak in July and August, thereafter decreased in autumn. From December to February, there was still a large amount of phytoplasma in diseased branches. The content of phytoplasma in branches kept higher than in roots throughout a year.

Key words: Jujube Witches' Broom, phytoplasma, distribution, year-round variation