Phylogenetic relationships in the family Resedaceae L.

Abstract

A study was made on the phylogenetic relationships of species of the family Resedaceae, based on morphological features, chromosome meiotic behaviour, karyotype features, size and fertility of pollen grains, nucleotypic parameters, seed protein profiles and esterase isozyme patterns.For the comparison of the seed protein profiles among species a method was developed based on the presence or absence of the bands by means of a computer program. The dendrogram obtained by such a method is in line, to a great extent, with the clusters (sections) obtained within the family based on morphological features.Data on meiotic behaviour and on morphology, such as the type of fruit, carpel numbers and others, suggest that x = 5 is the primitive basic chromosome number of this family, x 1 = 6 and x2 --7 are considered as secondary basic numbers derived from x = 5 through aneuploid changes.The results support a proposed phylogenetic tree of the genera and sections of the genus Reseda represented in the European Flora. The principal phenomena that have operated in the evolution of the Resedaceae seem to be aneuploid changes, polyploidy and structural rearrangements. A trend towards DNA increase in the evolution of this group is also apparent.

Chromosome diversity and evolution in tribe Lilieae (Liliaceae) with emphasis on Chinese species

“…Karyotype comparison analysis has been long used to describe chromosome patterns and moreover, the evolutionary direction in some closely related groups (Stebbins 1971;Stace 1978;González-Aguilera and Fernández-Peralta 1984;Hong 1990;Watanabe et al 1995;De Melo Nationiel et al 1997;Vanzela et al 1997;Das et al 1999;Shan et al 2003). However, for technical defects and the low resolution karyotype analysis have much limitation in use.…”

Karyotype evolution in the genus Boronia (Rutaceae)

“…It is described primarily by chromosome number, absolute and/or relative length of chromosomes, position of primary and secondary constrictions within them and distribution of material with different staining properties (Stebbins, 1971). Karyotype analysis of related species can generate information on chromosomal evolution within a group (Stebbins, 1971; Gonzalez‐Aguilera & Fernandez‐Peralta, 1984; Dimitrova & Greilhuber, 2000). Changes in these characters have played an important role in the evolution of plant species (Tobgy, 1943; Stace, 1978; Watanabe et al ., 1995; Vanzela, Ruas & Marin‐Morales, 1997), since they produce and alter structure of gene linkage groups, which comprise adaptive clusters of interacting genes (Stebbins, 1971).…”

“…Changes in these characters have played an important role in the evolution of plant species (Tobgy, 1943; Stace, 1978; Watanabe et al ., 1995; Vanzela, Ruas & Marin‐Morales, 1997), since they produce and alter structure of gene linkage groups, which comprise adaptive clusters of interacting genes (Stebbins, 1971). Therefore karyotyping is a means of understanding relationships between species, the processes which have brought about evolutionary diversification, and the directions which evolution has taken (Sherman, 1946; Stace, 1978; Gonzalez‐Aguilera & Fernandez‐Peralta, 1984; De Melo Nationiel et al ., 1997; Vanzela et al ., 1997; Das et al ., 1999; Watanabe et al ., 1999; Dimitrova & Greilhuber, 2000; Pedrosa, Schweizer & Guerra, 2000; Vilatersana et al ., 2000).…”

Estimation of Genome Size in the Endemic Species Reseda pentagyna and the Locally Rare Species Reseda lutea Using comparative Analyses of Flow Cytometry and K-Mer Approaches

“…The genome of R. pentagyna is around the same size as that of R. lutea , an octoploid species [ 18 ]. Furthermore, its genome is nearly twice as large as that of R. suffruticosa , which possesses a tetraploid genome [ 18 , 64 ].…”

“…According to Soltis et al [63] classification, both Reseda species genomes belong to the category of plants with a smaller genome. The ge nome of R. pentagyna is around the same size as that of R. lutea, an octoploid species [18] Furthermore, its genome is nearly twice as large as that of R. suffruticosa, which possesse a tetraploid genome [18,64].…”