Works on Chromosomal and Genetic Variations
Published research works tagged with the topic “Chromosomal and Genetic Variations”.
21 works
Showing 1 to 21 of 21 works
Two new species of the genus Kingdonella Uvarov, 1933 (Orthoptera, Acridoidea) and the first reported male of Kingdonel…
Two new species of the genus Kingdonella and the first report of a male K. qinghaiensis Zheng, 1990 are presented. The new species K. gandensis sp. nov. has similar morphological …
Combining nuclear genome, chloroplast fragments and morphology to solve the species delimitation of Aquilegia incurvata…
Hybridization can be widespread among closely related plant species, and the resulting intermediate traits may complicate species delimitation and identification. Such taxonomic u…
Mazus unguiculatus (Mazaceae), a distinct new species from Anhui Province, eastern China
Mazus unguiculatus Bo Li, a new species of Mazaceae from Anhui Province in eastern China, is described and illustrated. Phylogenetic analyses based on combined chloroplast DNA reg…
Phylogeny of Vietnamosasa (Poaceae, Bambusoideae) based on syntenic nuclear genes with description of a new species
Vietnamosasa is a small paleotropical woody bamboo genus of the Bambusa-Dendrocalamus-Gigantochloa (BDG) complex with unresolved interspecific relationships. It grows in the dry d…
Catalpa lutea (Bignoniaceae), a new species from north, central, and east China
Catalpa lutea J.H.Wang, W.J.Ma & Z.Y.Li, a new species of Bignoniaceae from north, central, and east China, is described and illustrated. By combining recent morphological compari…
Dictyolimon gilesii (Plumbaginaceae), a new generic record to China, with special reference to its first plastome
Dictyolimon (Plumbaginaceae, Caryophyllales) is a small genus with three currently accepted species. Nevertheless, its distribution remains poorly known, with records confined to …
Chromosome numbers for the Italian flora: 18
This study presents new chromosome numbers for two native Italian species: Crepis suffreniana (DC.) Steud. (Asteraceae), whose only Italian population is known for the Migliarino-…
Chromosome numbers for the Italian flora: 15
The chromosome numbers for seven Italian endemic taxa of Armeria (Plumbaginaceae) are here presented, including three species (Armeria aspromontana, A. garganica, and A. macropoda…
Evaluating the conservation effectiveness of Ammopiptanthus nanus (Fabaceae) under different ex situ strategies through…
Ammopiptanthus nanus (Fabaceae), a nationally protected endangered evergreen shrub endemic to Central Asian deserts, is severely threatened by habitat fragmentation. To cons…
Indosasa fimbriligulata (Poaceae, Bambusoideae), a new bamboo species from Guangxi, China
Based on morphological and molecular phylogenetic evidence, we confirmed that some bamboo collections from Guangxi, China, represent a new species of Indosasa. The new species, na…
Reinstatement of Cyclocarya serrata (Juglandaceae) based on ploidy, morphology, niche and phylogenetics
Pterocarya serrata C.K.Schneid., originally described in 1912, has long been treated as a synonym of Cyclocarya paliurus (Batal.) Iljinsk. in Plants of the World Online (POWO). Ba…
A new white-flowered species of Gagea (Liliaceae) from the Fergana Valley, Uzbekistan and Kyrgyzstan
The article describes the morphological and anatomical features of Gagea khassanovii Levichev, Turginov & W.J.Li, sp. nov., recently described from the Fergana Valley. The species…
Elymus multiramosus (Poaceae), a new species from the north-western Qinghai-Tibetan Plateau, China
A new species from China, Elymus multiramosus Y.C. Zhang, sp. nov. is described and illustrated herein, based on morphological characters and molecular phylogenetic analysis. The …
Hedysarum qilianshanense sp. nov. (Fabaceae, Hedysareae), a new species from the Qilianshan Mountains in Gansu, China
Hedysarum qilianshanense sp. nov. (Fabaceae, Hedysareae) is described and illustrated from the Qilianshan Mountains in Gansu, China. This new species is similar to H. przewalskii,…
Karyotype and genome size variation in Delphinium subg. Anthriscifolium (Ranunculaceae)
Five taxa of Delphinium subg. Anthriscifolium have been karyologically studied through chromosome counting, chromosomal measurement, and karyotype symmetry. Each taxon that we inv…
Gelidocalamus zixingensis (Poaceae, Bambusoideae, Arundinarieae), a new species from southern China revealed by morpho…
The genus Gelidocalamus T. H. Wen, endemic to southern China, is a small but taxonomically problematic genus of Arundinarieae (Poaceae, Bambusoideae). During field work, a populat…
Karyotype and genome size variation in white-flowered Eranthis sect. Shibateranthis (Ranunculaceae)
Comparative karyomorphological analyses of six out of the eight white-flowered species of Eranthis sect. Shibateranthis have been carried out. All studied specimens of E. byunsane…
New morphological and DNA evidence supports the existence of Calligonum jeminaicum Z. M. Mao (Calligoneae, Polygonaceae…
Calligonum jeminaicum Z. M. Mao, a species regarded as endemic to China, was thought to be nonexistent owing to a lack of scientific records. The similarity of C. jeminaicum to C.…
Reproductive biology and variation of nuclear ribosomal ITS and ETS sequences in the Calligonum mongolicum complex (Pol…
To explore the biosystematics of the Calligonum mongolicum complex (Polygonaceae), the flowering phenological period, breeding and pollination characters and seed set of the compl…
A new tetraploid species of Solanum L. sect. Solanum (Solanaceae) from Tanzania
Solanum umalilaense Manoko sp. nov. (Solanaceae) is described from the Umalila area, in the southern highlands of Tanzania. Its novelty is supported with both morphological and AF…
Mimulus peregrinus (Phrymaceae): A new British allopolyploid species
Polyploidization plays an important role in species formation as chromosome doubling results in strong reproductive isolation between derivative and parental taxa. In this note I …