Data/hora: 01/06/2024 12:14:56

Provedor de dados: | 27
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; Measurement; Thallus.
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. &lt;i&gt;Polysiphonia&lt;/i&gt;). 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 &lt;i&gt;Polysiphonia&lt;/i&gt; 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
Identificador: | http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3254
Fonte: | %3Ci%3ECryptogam.%2C+Algol.+8%282%29%3C%2Fi%3E%3A+107-112
Fonte: | info:eu-repo/semantics/restrictedAccess