Effect of arbuscular mycorrhizae on cv. Carmem avocado plants
2002
Silveira, S.V. da | Souza, P.V.D. de | Bender, R.J. | Koller, O.C.
The effects of six species of arbuscular mycorrhizae (AM) on root colonization, nutrient uptake, reserve substances, and vegetative development of cv. Carmem avocado (Persea sp.) plants were evaluated. Glomus clarum Nicol. and Schenck, Glomus etunicatum Becker and Gerd, Glomus manihotis How, Siev and Schenk; Acaulospora scrobiculata Trappe, Scutellospora heterogama Nicol and Gerd and Gigaspora margarita Becker and Hall were inoculated on avocado seedlings, onto which Carmem scions were grafted. Responses of the avocado plants to the different AM species 7 months after grafting were distinctly different. Scutellospora heterogama, A. scrobiculata, G. etunicatum, and G. clarum more thoroughly colonized the root system of the avocado plants, resulting in enhanced nutrient uptake and higher accumulation of reserve substances, which favored vegetative growth. The mutualism between avocado plants and G. margarita or G. manihotis was not efficient under the conditions of the present experiment.
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