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| Study on ecological suitability of exotic invasive plant Galinsoga parviflora Cav. |
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| Abstract: |
| Using paraffin section method and scanning electron microscopy technology， authors observed the
anatomical structure of Galinsoga parviflora vegetative organs and the morphology of seed， determined the reproductive
characteristics of seeds by drying and seed germination test， as well as investigated the niche characteristics and seed
yield per plant in field. The resaults showed that， the climate of Guizhou was similar to that of South America， that led G.
parviflora invaded successfully and rapidly. G. parviflora had large biomass， owned the biggest niche breadth and overlap
value， it’ s easy for emerging the single dominant community. The seed yield per plant was high， and its light weight and
small size made the seed easy to spread in the wind. The seed germination rate was high， and it had a certain ability of
resistance to acid and alkali stress， salt stress as well as drought stress. The structure of G. parviflora also reflected its
adaptability to different environments. |
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