Karyotype analysis in three species of Cladophora Kuetz.

Populations of Cladophora with two different levels of ploidy, n = 18/2n = 36 (18/36) and n = 24/2n = 48 (24/48), are present in creeks in the southern part of the province of Buenos Aires, Argentina. The goals of our study were to 1) relate the number of apical branches · mm−2 in 18/36 and 24/48 populations with the water velocity at the collection site; 2) correlate the number of apical ramifications · mm−2 in plants of the same population (24/48) growing in sectors with distinct water velocities; 3) compare cell length among populations with different ploidy levels, analyzing the sources of variation in different sectors of the same creek and in different plants of the same sector; and 4) analyze the sources of variation in cell length in 24/48 populations, including variations among different creeks. Our results suggest that 1) the number of branches · mm−2 tends to increase with higher water velocity; 2) the 24/48 populations have more ramifications · mm−2 than the 18/36 ones; 3) the length of vegetative cells is not an adequate criterion for differentiating between 18/36 and 24/48 populations; and 4) variations in vegetative cell length in 24/48 populations are highly significant among plants from different sectors of the same creek.

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Karyomorphological studies on three species of Cladophora kuetz.

Verma¹

1985

CYTOLOGIA

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Karyotype analysis in three species of Cladophora Kuetz.

Cited by 5 publications

References 9 publications

Karyological studies of four Cladophora (Cladophorales, Chlorophyta) species from coastal North Carolina

Karyological studies of four Cladophora (Cladophorales, Chlorophyta) species from coastal North Carolina

VARIATION IN NUMBER OF APICAL RAMIFICATIONS AND VEGETATIVE CELL LENGTH IN FRESHWATER POPULATIONS OF CLADOPHORA (ULVOPHYCEAE, CHLOROPHYTA)¹

Karyomorphological studies on three species of Cladophora kuetz.

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Karyotype analysis in three species of Cladophora Kuetz.

Cited by 5 publications

References 9 publications

Karyological studies of four Cladophora (Cladophorales, Chlorophyta) species from coastal North Carolina

Karyological studies of four Cladophora (Cladophorales, Chlorophyta) species from coastal North Carolina

VARIATION IN NUMBER OF APICAL RAMIFICATIONS AND VEGETATIVE CELL LENGTH IN FRESHWATER POPULATIONS OF CLADOPHORA (ULVOPHYCEAE, CHLOROPHYTA)1

Karyomorphological studies on three species of Cladophora kuetz.

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VARIATION IN NUMBER OF APICAL RAMIFICATIONS AND VEGETATIVE CELL LENGTH IN FRESHWATER POPULATIONS OF CLADOPHORA (ULVOPHYCEAE, CHLOROPHYTA)¹