Dos especies nuevas de Mammillaria (Cactaceae) del centro de México Two new species of Mammillaria (Cactaceae) from central Mexico
نویسندگان
چکیده
منابع مشابه
Genomic relations among 31 species of Mammillaria haworth (Cactaceae) using random amplified polymorphic DNA.
Thirty-one species of Mammillaria were selected to study the molecular phylogeny using random amplified polymorphic DNA (RAPD) markers. High amount of mucilage (gelling polysaccharides) present in Mammillaria was a major obstacle in isolating good quality genomic DNA. The CTAB (cetyl trimethyl ammonium bromide) method was modified to obtain good quality genomic DNA. Twenty-two random decamer pr...
متن کاملDevelopmentally specific soluble and membrane proteins and glycoproteins in Mammillaria gracillis Pfeiff. (Cactaceae) tissue culture
Artificial environmental conditions in the tissue culture influence growth and induce aberration from the characteristic organization pattern. As CAM plants, cacti are particularly susceptible to altered growth environment. In vitro propagated Mammillaria plants spontaneously produce callus which regenerates normal and hyperhydric shoots without the addition of any growth regulator. In order to...
متن کاملChromosome analysis of Mammillaria supertexta, M. crucigera and M. haageana and their comparison with M. san-angelensis (Cactaceae)
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....
متن کاملCentro de Investigación y de Estudios Avanzados del I.P.N.
We study topological defects arising in the Grand Unification Model SU(6)L ⊗SU(6)c⊗SU(6)R ×Z3. In particular we show the existence of massive magnetic monopoles, cosmic strings and global textures in a particular symmetry breaking chain. We comment on the possible relation to astrophysical problems, in particular to the explanation of the origin of the highest energy cosmic rays reported recent...
متن کاملCentro de Investigación en Computación del IPN
In this dissertation the GEONTO–MET methodology is presented. It is oriented to formalize the geographic domain conceptualization according to the specifications of the Instituto Nacional de Estadística, Geografía e Informática (INEGI). The main goal is to provide semantic descriptions, which represent the properties and relations describing so the behavior of geographic objects and taking into...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Polibotánica
سال: 2018
ISSN: 2395-9525
DOI: 10.18387/polibotanica.45.1