Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (10): 1743-1746.

Previous Articles     Next Articles

Effect of natural stress on genetic diversity of Frankia in Alnus nodules

TANG Xiaomeng1, DAI Yumei1, XIONG Zhi2, ZHANG Zhongze1, ZHANG Chenggang 1   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Southwest Forestry College, Kunming 650224, China
  • Received:2003-03-03 Revised:2003-05-22 Online:2003-10-15

Abstract: The genetic diversity of Frankia in the nodules of Alnus nepalensis growing in different habitats of Jizu and Wuliang Mountains in Yunnan Province was studied by rep-PCRtechnique.The results indicated that the Frankia had an abundant genetic diversity, which was varied with different zones, altitudes and slopes.More genotypes of Alnus-infective Frankia were found:at Jizu than at Wuliang Mountain.At the bottom of Jizu Mountain (2300 m), the Shannon-Weiner index was 0.90, and increased with raising altitude, up to 1.33 at the top (2700m).The genetic diversity of Frankia was more abundant along the southern slope than the northern slope.It was concluded that the diversity index was positively related to natural stresses which were one of the important factors producing and maintaining the genetic diversity of Frankia .

CLC Number: