Response of (Lycopersicum esculentum Mill.) to Different Arbuscular Mycorrhizal Fungi Species
The ability of endomycorrhizal fungi to colonize tomato
(Lycopersicum esculentum. Mill) roots, was studied under glasshouse
conditions. Two indigenous species; Glomus mosseae and Scutellospora
sp. and non-indigenous species Gigaspora margarita were
used in the study. Pot culture technique was used for re-culturing
G. mosseae and Scutellospora sp., sorghum was used as a trap
host. Gigaspora margarita was re-cultured by test tube technique.
All species had the ability to colonize tomato root with different colonization
levels. Significantly higher root were colonized by G. mosseae
(80%) compared to G. margarita (20%). A G. mosseae significantly
increased shoot dry weight (2.82 g) and flowers number (32.75 g) and root
growth. Tomato plants treated by G. mosseae were higher significantly
after seven week of plant growth. The colonization of tomato root by G.
mosseae lead to bigger root size and more branching which increase
positively the number of root tips, length, surface area and root volume.
Higher spores (455/100 g) were counted in Glomus mosseae inoculated
plant compared to Scutellospora sp. (250/100 g) and G. margarita
plant (132/100 g).
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