10种绿化苗木对VA菌根的依赖性及其接种效应

Mycorrhizal Dependency of Ten Seedling Species for Landscaping and the Inoculation Effects

摘要:

研究了10种绿化树对VA菌根的依赖性、感染率及其接种效应。结果表明：各参试树种对VA菌根都有不同程度的感染率及依赖性；其中黑金刚(Ficus elastica cv. Deocora Burgundy)接种感染率最高，达90％，巴西榕(Ficus elastica cv. Variegaa)、竹节树(Carallia brachiata)的接种感染率大于80％，接种感染率大于60％的有花金刚(Ficus elastica cv.Decora Tricolor)、红关公(Ficus elastica cv.Decora)、扭纹铁(Dracaena deremensis)、红桂木(Artocarpus nitidus subsp. lingnanensis)，小于35％的有红楣(Anneslea fragrans)、伞花木(Eurycorymbus cavaleriei)、石楠(Photinia serrulata)；黑金刚、巴西榕对VA菌根的依赖度最高，都超过了300%，红关公、花金刚对VA菌根的依赖度中等，分别为213.3%、203.5%；红桂木、竹节树、扭纹铁、石楠、红楣、伞花木对VA菌根依赖性偏弱，依赖度都在200％以下。参试树种菌根感染率和依赖度的排序基本一致。VA菌根对各参试树种均有不同程度的接种效应，对黑金刚、花金刚、红关公、巴西榕和竹节树的接种效应最为明显，对扭纹铁、红桂木的接种效应较好，而对石楠、红楣和伞花木则稍差。

Abstract:

Infection rate, mycorrhizal dependency and inoculation effect were determined in 10 seedling species for landscaping infected with VA(Glomus moseae Gerdemenn et Trappe). The tested species were Ficus elastica cvs. Variegaa, Decora, Decora Burgundy, Decora Tricolor Carallia brachiata, Dracaena deremensis, Artocarpus nitidus subsp. lingnanensis, Anneslea fragrans, Eurycorymbus cavaleriei, and Photinia serrulata. The infection rate was in the order: Decora burgundy>Variegaa>C.brachiata>DecoraTricolor>Decora>D.deremensis and A. nitidus subsp. lingnanensis>A. fragrans > E. cavaleriei > P. serrulata. Decora Burgundy and Variegaa showed highest mycorrhizal dependency of over 300%, followed by Decora and Decora Tricolor of 213.3% and 203.5%, respectively，whereas the other 6 species had lower dependency of less then 200%. The inoculation effect was highest in Decora Burgundy, Decora Tricolor, Decora, Variegaa and C. brachiata, and higher in D. deremensis, A. nitidus subsp. lingnanensis. The lowest inoculation effect was found in P. serrulata, A. fragrans and E. cavaleriei.