This is the first report of chromosome number in Mammillaria supertexta, M. crucigera and M. haageana, which was the same in the three species: 2n=22, x=11. This number coincides with the number reported for the genus Mammilaria and for the Cactaceae family. However, interspecific variation was observed in the karyotypes: M. supertexta exhibited longer chromosomes (1.79-3.21 μm) and those of M....

The study focuses on the comparative evaluation of extraction methods (ultrasonication and agitation) based phenolic composition antioxidative activities Mammillaria prolifera it is first report this subject. effects conditions temperature (25° 60°), time (15, 30 60 min) solvent type (water 70 % 100 methanol) total compounds, 2,2'-azinobis( 3-ethylbenzothiazoline-6-sulfonic acid) 2,2-diphenyl-1...

Plant tissues contain relatively low amounts of proteins whose extraction is often difficult due to the presence of interfering compounds such as rigid cellulosic cell wall, storage polysaccharides, lipids and other contaminants that can cause protein degradation or modification. Therefore it is important to optimize protein extraction and to establish a robust protocol for two-dimensional gel ...

The endemic plant species with extremely narrow geographical range (<100 km2) often have few populations of small size and tend to be more vulnerable to extinction by genetic drift and inbreeding effects. For these species, we tested if intraspecific genetic diversity can be applied to identify conservation priorities. The biological model was Mammillaria albiflora—a Mexican cactus that numbers...