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cje ›› 1996, Vol. ›› Issue (6): 22-25.

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Studies on VA Mycorrhizal State of Pteridophytes and Their Coevolution

Zhao Zhiwei1, Zhang Tao1, He Zhaorong2   

  1. 1. Biology Department of Yunnan University, Kunming 650091;
    2. Institute of Ecology and Geobotany of Yunan University, Kunming 650091
  • Received:1995-09-05 Revised:1996-01-15 Online:1996-12-10

Abstract: Survey was made on 44 species of pteridophytes in Yunnan provance in terms of VA mycorrhizae. The coevolution of pteridophytes and VA mycorrhizal fungi was discussed. The results shown that 18 species of pteridophytes were typically mycorrhized, the fungi which infected pteridophytes to form VA mycorrhiza belong to the genus of Glomus. VA mycorrhiza was a primitive biological character, it has a positive evolutionary indication in the origin and evolution of land plants.

Key words: cotton, water and nitrogen management, photosynthesis, chlorophyll fluorescence, yield.