Associação de fungos micorrízicos arbusculares e cultivares micropropagadas de antúrio

Abstract

); ADRIANA PARADA DIAS DA SILVEIRA ( 3 ) RESUMO Para a formação de mudas, plântulas micropropagadas de antúrio (Anthurium andraeanum) são submetidas a uma das etapas mais críticas na cultura de tecidos de plantas que é a da aclimatização. Uma forma de se estimular a autotrofia pode ser o estabelecimento da associação de fungos micorrízicos e as raízes das plântulas de antúrio. Assim, com o objetivo de avaliar o efeito da associação micorrízica em plântulas de antúrio, foi realizado um experimento, em casa de vegetação, empregando-se as cultivares IAC Astral, IAC Eidibel, IAC Juréia, IAC Luau, IAC Netuno e IAC Ômega e os fungos micorrízicos arbusculares Glomus intraradices, Glomus etunicatum e Acaulospora sp., em substrato orgânico, na fase de aclimatização das plântulas micropropagadas. Os resultados permitiram concluir que houve resposta das cultivares de antúrio à micorrização, em termos de produção de matéria seca, e que a eficiência simbiótica variou com a cultivar e o fungo micorrízico associado. Palavras-chave:Anthurium andraeanum, aclimatização, micorriza arbuscular, muda micropropagada, plantas ornamentais tropicais. ABSTRACT MYCORRHIZAL FUNGI AND MICROPROPAGATED CULTIVARS OF ANTHURIUM ASSOCIATIONSOne of the most important steps on micropropagated Anthurium plantlets is the acclimatization. Mycorrhization could be a process that helps the plantlets to change to the autotrophic state. The objective was to evaluate the effect of the mycorrhizal association on the growth of Anthurium cultivars. A experiment was conducted under greenhouse conditions, using the cultivars IAC Astral, IAC Eidibel, IAC Juréia, IAC Luau, IAC Netuno and IAC Ômega and the arbuscular mycorrhizal fungi Glomus intraradices, Glomus etunicatum and Acaulospora sp., in organic substrate, at the plantlets acclimatization stage. The results showed that there was increase in shoot dry matter in mycorrhizal plantlets and that the symbiotic efficiency varied according to the cultivar and arbuscular mycorrhizal fungus.

Acclimatization of Tapeinochilos ananassae plantlets in association with arbuscular mycorrhizal fungi

“…Inoculation benefits with G. etunicatum and Acaulospora sp. in acclimatization have also been reported for micropropagated gerbera (Sato et al, 1999) and anthurium plants (Stancato & Silveira, 2006), and for chrysanthemum plants inoculated with different species of Glomus (Sohn et al, 2003).…”

“…Specific favorable combinations between AMF and ornamental plant genotypes have been observed in anthurium (Anthurium andraeanum Lindl.) (Stancato & Silveira, 2006), chrysanthemum (Chrysanthemum morifolium Ramat.) (Sohn et al, 2003), and gerbera daisy (Gerbera sp.)…”

Growth and yield of anthurium in response to gibberellic acid

“…The majority of these species are perennial herbaceous plants. They are often cultivated for ornamental purposes due to their attractive infl orescences, such as Anthurium andraeanum Linden ex André, which has high commercial value as a garden plant, potted plant or for its cut fl owers (STANCATO & SILVEIRA, 2006 Ciência Rural, v.44, n.8, ago, 2014. GUÉRIN, 2003).…”