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Journal of Forestry Research

, Volume 12, Issue 3, pp 201–204 | Cite as

Phenological observations onLarix principis-rupprechtii Mayr. in primary seed orchard

  • Zhang Xin-bo
  • Ren Jian-ru
  • Zhang Dan-er
Article

Abstract

Through 5 years of phenological observations onLarix principis-rupprechtii Mayr. in primary seed orchard and studies on population and individuals of clones, the annual periodic phenological laws were revealed and the annual phenological periodic table was drawn up. The correlation between various phenophases, the air temperature and active accumulated temperature were analyzed and expounded. The authors also analyzed the similarities and differences of phenophases among clonal individuals as well as the blooming properties of male and female flowers at the same time. This study could provide theoretical reference for working out the production plan of improved varieties and other management measures in seed orchard ofLarix principis-rupprechtii.

Key words

Larix principis-rupprechtii Mayr. Primary seed orchard Phenological observation 

CLC number

S718.45 

Document code

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References

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Copyright information

© Editorial Board of Journal of Forestry Research 2001

Authors and Affiliations

  • Zhang Xin-bo
    • 1
  • Ren Jian-ru
    • 2
  • Zhang Dan-er
    • 3
  1. 1.Shanxi Academy of Forestry Science and Northern Research Institute of Forestry of ChinaTaiyuanP.R. China
  2. 2.Shanxi Forestry technique Extension StationShanxiChina
  3. 3.Shanxi Forest Tree Seed and Seedling StationShanxiChina

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