Mycorrhizal Fungal Screening and Inoculant Effectiveness for Casuarina junghuhniana

ZHANG Yong; CHEN Yu; LI Guo-biao; CHEN Zhen; ZHONG Chong-lu

The paper reports the preliminary results of inoculant effect on the growth and drought resistance of Casuarina junghuhniana based on a nursery experiment.Seedlings were inoculated with 3 endomycorrhizal fungi(AMF)and 6 ectomycorrhizal fungi(ECMF),then the seedling height,root length,ground diameter,dry weight under ground,dry weight above ground and total biomass were measured,and the survival percentage of seedlings under drought stress was surveyed after no watering for 7 days as well.The results showed that both fungi could significantly improve the growth of C.junghuhniana seedlings.Mycorrhizal Dependency(MD) of C.junghuhniana belongs to medium or weak in classification according to 9 fungi applied in this experiment.The growth improvement of above ground(such as seedling height,diameter at ground level and dry weight above ground) was more evident than that of under ground(such as root length,dry weight under ground) when C.junghuhniana was inoculated with mycorrhizal fungi.The AMF indicated more obvious effect in improving drought resistance of C.junghuhniana than that of ECMF according to 9 mycorrhizal fungi used in this experiment.5 isolates were selected from tested AMF and ECMF,including Glomus caledonium 90068,G.caledonium 90036,G.versiform 9004,Scleroderma flavidum 0207,Laccaria sp E439.They could be used as inoculant of C.junghuhniana seedlings.

1. Research Institute of Tropical Forestry, CAF, Guangzhou 510520, Guangdong, China

2. Qingyuan Forest Bureau of Guangdong Province, Qingyuan 511515, Guangdong, China

Received Date: 2005-08-09

Abstract: The paper reports the preliminary results of inoculant effect on the growth and drought resistance of Casuarina junghuhniana based on a nursery experiment.Seedlings were inoculated with 3 endomycorrhizal fungi(AMF)and 6 ectomycorrhizal fungi(ECMF),then the seedling height,root length,ground diameter,dry weight under ground,dry weight above ground and total biomass were measured,and the survival percentage of seedlings under drought stress was surveyed after no watering for 7 days as well.The results showed that both fungi could significantly improve the growth of C.junghuhniana seedlings.Mycorrhizal Dependency(MD) of C.junghuhniana belongs to medium or weak in classification according to 9 fungi applied in this experiment.The growth improvement of above ground(such as seedling height,diameter at ground level and dry weight above ground) was more evident than that of under ground(such as root length,dry weight under ground) when C.junghuhniana was inoculated with mycorrhizal fungi.The AMF indicated more obvious effect in improving drought resistance of C.junghuhniana than that of ECMF according to 9 mycorrhizal fungi used in this experiment.5 isolates were selected from tested AMF and ECMF,including Glomus caledonium 90068,G.caledonium 90036,G.versiform 9004,Scleroderma flavidum 0207,Laccaria sp E439.They could be used as inoculant of C.junghuhniana seedlings.

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Reference (8)

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Mycorrhizal Fungal Screening and Inoculant Effectiveness for Casuarina junghuhniana

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