| Autor: |
Ksentini, Hana, Meddad-Hamza, Amel, Beddiar, Arifa |
| Předmět: |
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| Zdroj: |
Jordan Journal of Biological Sciences; 2020 Supplement, Vol. 13, p621-626, 6p |
| Abstrakt: |
The cork oak (Quercus suber L.) is a tree which forms important forests that play a vital socioeconomic and environmental value in the Mediterranean basin. The multiple factors of overgrazing, biological invasion by introducing acacia trees, and repeated fires weaken the cork oak ecosystem and affect its natural regeneration. The purpose of this study is to increase the production of cork oak. With this aim, a test of controlled mycorrhization was carried out on the nursery where two commercial inocula--the arbuscular mycorrhizal (Symbivit) (S) and ectomycorrhizal (Ectovit) (E)--were brought separately and combined on cork oak seedlings cultivated on sterilized or non-sterilized soil. Statistical models revealed that the controlled inoculation improved the growth of the plants inoculated by IE, which had significantly increased mycorrhizal root colonization levels and cork oak growth compared to the treatments of the Symbivit (IS) and the non-inoculated plants (NI); these rates were lower in both substrates: sterile and non-sterile. It is known that the best mycorrhizal partners of cork oak are ectomycorrhizae, however, in the presence of arbuscular mycorrhizae, the mycorrhizal root colonization levels and the growth parameters were considerably enhanced compared to previous treatments IE, IS and NI. The dual colonization had shown positive effects on the improvement of the mycorrhizal potential of the soil. Indeed, EM % colonization was the most strongly correlated with growth parameters compared to other mycorrhizal parameters. This research underlines that the use of controlled inoculation based on commercial inoculum can be an effective alternative in the case where the local inoculum is not available, and thus time saving. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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