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FOREST RESOURCES WANAGEMENT ›› 2016›› Issue (5): 107-111.doi: 10.13466/j.cnki.lyzygl.2016.05.019

• Scientific Research • Previous Articles     Next Articles

Comprehensive Analysis of Growth,Stem Form and Resistance to Leptocybe invasa of Eucalyptus grandis Provenances

ZHANG Zhaoyuan1,2, XIANG Dongyun2, XU Jianmin1, SONG Xianchong2, CHEN Fengfan2   

  1. 1. Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou,Guangdong 510002,China;
    2. Guangxi Zhuang Autonomous Region Forestry Research Institute,Nanning,Guangxi 530002,China
  • Received:2016-07-19 Revised:2016-10-19 Online:2016-10-28 Published:2020-11-02

Abstract: The growth,stem form and resistance to Leptocybe invasa of 9 provenances of Eucalyptus grandis were investigated.The results show that the resistance to Leptocybe invasa among 9 provenances was different,provenance SOUTH AFRIC 1/SAG-TER1 was the most sensitive and provenance SOUTH AFRIC 6/SAG-URO was the most insensitive.The growth traits had significant differences among different provenances,provenance SOUTH AFRIC 6/SAG-URO was the biggest and had significant differences with provenance 16892 and 17907.There was no significant difference of stem straightness and stem fullness among 9 provenances,but slight difference of branch status and significant differences of branching angle.The correlation analysis showed that there was significant or extremely significant correlation between growth traits and stem form traits,the correlation between tree height and damage situation was significantly negative correlation.According to the comprehensive analysis of Eucalyptus grandis provenances,provenance SOUTH AFRIC 6/SAG-URO has the best resistance to Leptocybe invasa and could act as superior provenances for the future resistance breeding.

Key words: Eucalyptus grandis, Leptocybe invasa, provenance, correlation analysis

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