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林业科学 ›› 2010, Vol. 46 ›› Issue (7): 183-187.doi: 10.11707/j.1001-7488.20100727

• 论文 • 上一篇    下一篇

费约果茎解剖结构与插条不定根的形成

张猛1,2,王丹1,汤浩茹2,任少雄1,刘仁道1   

  1. 1.西南科技大学生命科学与工程学院 绵阳 621010;2.四川农业大学林学园艺学院 雅安 625014
  • 收稿日期:2009-02-01 修回日期:2010-04-02 出版日期:2010-07-25 发布日期:2010-07-25
  • 通讯作者: 汤浩茹

Anatomical Structure of Stem and Adventitious Root Formation of Feijoa Cuttings

Zhang Meng1,2;Wang Dan1;Tang Haoru2;Ren Shaoxiong1;Liu Rendao1   

  1. 1.College of Life Science and Engineering,Southwest University of Science and Technology Mianyang 621010;2.College of Forestry and Horticulture,Sichuan Agricultural University Ya’an 625014
  • Received:2009-02-01 Revised:2010-04-02 Online:2010-07-25 Published:2010-07-25

关键词: 费约果, 茎, 扦插, 不定根, 解剖学

Abstract:

One-year-old semi-hard branches and hard branches from mother trees of feijoa at different ages were used to study the relationships between rooting characteristics and anatomical structure of the cutting and their development process of adventitious roots by the method of paraffin section. The results showed that no marked difference in rooting ability of the cuttings from mother trees with different ages was found, but there was difference in anatomical structure between hard branches and semi-hard branches from the same age tree. The cuttings of semi-hard branches were easier to root than the hard branch cuttings, probably because the two materials had different rooting characteristics. The adventitious root of feijoa cuttings is derived from a type of induced root primordium, which originates from the junction of vascular cambium and pith rays. Most roots were produced in a range of 0.1-2 cm from the cutting end. Callus tissue could not produce root primordia. There were cyclical and sequential sclerenchyma cells in the phloem and no root primordium in the stems. These structure features may be one of main reasons that feijoa cuttings have low rooting rate.

Key words: Feijoa sellowiana, stem, cutting, adventitious roots, anatomy