The Law of Homologous Series in Variation for Systematics

Rodionov, A. V.; Shneyer, V. S.; Punina, E. O.; Носов, Н. Н.; Gnutikov, A. A.

doi:10.1134/s1022795420110071

Cited by 2 publications

(1 citation statement)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We believed that the morphologically intermediate specimens might have resulted from introgressive hybridization 1,14,76 . Based on a very different set of rDNA in S. hyperboreum and S. natans, we developed a new hypothesis that plants of section Minima featuring a "mosaic" of species-specific traits may not be introgressive hybrids but rather a manifestation of Vavilov's law of homologous series in hereditary variability 78,79 . It appears from the presence of ribotypes common to section Natantia that S. hyperboreum and S. natans are of hybrid origin, which involved species of this section.…”

Section: Discussionmentioning

confidence: 99%

Hybridization and diversity of aquatic macrophyte Sparganium L. (Typhaceae) as revealed by high-throughput nrDNA sequencing

Belyakov,

Mikhaylova,

Machs

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Sparganium is an emergent aquatic macrophyte widely spread in temperate and subtropical zones. Taxa of this genus feature high phenotypic plasticity and can produce interspecific hybrids. By means of high-throughput sequencing of the internal transcribed spacer (ITS1) of 35S rDNA, the status of 15 Eurasian Sparganium species and subspecies was clarified and the role of hybridization events in the recent evolution of the genus was investigated. It has been shown that a number of species such as S. angustifolium, S. fallax and S. subglobosum have homogenized rDNA represented by one major ribotype. The rDNA of other taxa is represented by two or more major ribotypes. Species with high rDNA heterogeneity are apparently of hybrid origin. Based on the differences in rDNA patterns, intraspecific diversity was identified in S. probatovae and S. emersum. Thus, we have concluded that Sparganium has extensive interspecific hybridization at the subgenus level, and there may also be occasional hybridization between species from different subgenera.

show abstract