variabilidade entre isolados de trichoderma harzianum: i - aspectos citológicos variability among trichoderma harzianum isolates: i - cytological aspects

Clicks: 166
ID: 190026
1995
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Abstract
Objetivou-se neste trabalho estudar a variabilidade de isolados selvagens de Trichoderma harzianum baseado nas características culturais e citológicas. Observaram-se o tamanho dos fialosporos, número de núcleos por fialosporos e crescimento e esporulação em meio de malte-ágar. Pelos resultados aqui encontrados foi possível reconhecer que há variação entre os isolados selvagens da espécie T. harzianum. Com relação ao número de núcleos, verificou-se uma variação de 1 a 3 núcleos por fialosporos. Também observou-se padrões diferenciais de crescimento e morfologia da colônia. Mais de 50% dos isolados atingiram o máximo de crescimento em 48 horas.
This study is based largely on morphological and cultural characters of Tríchoderma harzianum isolates. It were observed the size of phialospores, mycelial growth and sporulation on malt extract agar and nuclei number per phialospores, stained with Giemsa. A x 100 oil immersion len was used in examining and in measuring phialospores. Based on the size of phialospores, it was possible recognize that there is variaton among the wild isolates for the specie T. harzianum. Also, with relation to mycelial growth and sporulation can itself distinguish from one another different pattern. Up to 50% of isolates had maximum growth in 48 hours. The nuclei number of 1 to 3 per phialospore was observed.
Reference Key
peres1995scientiavariabilidade Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;E. Peres;I.S. De Melo
Journal journal of the iranian chemical society
Year 1995
DOI
10.1590/S0103-90161995000100010
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161995000100010
Keywords
trichoderma harzianum

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