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Provedor de dados:  OMA
País:  Belgium
Título:  The Newman method, modified for the estimation of the total thallus length of filamentous algae
Autores:  Gillis, J.
Data:  1987
Ano:  1987
Palavras-chave:  Algae
Resumo:  Newman's (1966) method of total root length estimation is modified and adapted to measure total length of filamentous algae in culture (i.c. <i>Polysiphonia</i>). This method makes possible a measurement and an estimation of the growth of the algae in culture without disturbing them. The petri dishes are placed on a 1x1 mm grid and the filament/grid intersections are counted. Total filament length (T) is given by T = Pi N (LxW)/4(LxW), with N = the number of intersections, L = the length and W = width of area in which the thallus is situated. Total filament length of <i>Polysiphonia</i> in culture estimated by the Newman method is compared with camera lucida measurements. The correlation between the results obtained by the 2 techniques is very high (r = 0.97). The maximum deviation between the means of the total length obtained by the 2 methods was 7.2%: these means are not significantly different (Student t-test). The Newman estimation method required less time than direct measurement, and its results are not significantly different.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Fonte:  %3Ci%3ECryptogam.%2C+Algol.+8%282%29%3C%2Fi%3E%3A+107-112
Direitos:  info:eu-repo/semantics/restrictedAccess

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