1046. SORBUS CAMBRENSIS: Rosaceae
نویسندگان
چکیده
Sorbus cambrensis, WELSH WHITEBEAM, is described and illustrated. It a member of subgenus Aria unusual in being pentaploid. endemic to six sites the eastern Brecon Beacons, Wales, ‘Endangered.’ was first noted as ‘large-leaved S. porrigentiformis’ 1970s 2009. closely related another pentaploid, stenophylla, both which may be derived from hybridisation between rupicola unknown members Aria.
منابع مشابه
Inheritance of the chloroplast genome in Sorbus aucuparia L. (Rosaceae).
Chloroplast DNA (cpDNA) inheritance was investigated in Sorbus aucuparia using progenies obtained from six controlled crosses between individuals of known haplotype. Polymerase chain reaction (PCR) amplification, followed by restriction analysis, was used to characterize 248 offspring for either of two polymorphic cpDNA fragments. All offspring exhibited the maternal haplotype, which indicates ...
متن کاملCytotype diversity in the Sorbus complex (Rosaceae) in Britain: sorting out the puzzle.
BACKGROUND AND AIMS Large-scale ploidy surveys using flow cytometry have become an essential tool to study plant genome dynamics and to gain insight into the mechanisms and genetic barriers framing ploidy diversity. As an ideal complement to traditional techniques such as chromosome counting, the analysis of cytotype diversity in plant systems such as Sorbus provides primary investigation into ...
متن کاملPopulation structure at the S-locus of Sorbus aucuparia L. (Rosaceae: Maloideae).
Low sequence divergence within functional alleles is predicted for the self-incompatibility locus because of strong negative frequency-dependent selection. Nevertheless, sequence variation within functional alleles is essential for current models of the evolution of new mating types. We genotyped the stylar self-incompatibility RNase of 20 Sorbus aucuparia from a population in the Pyrenees moun...
متن کاملBreeding system and spatial isolation from congeners strongly constrain seed set in an insect-pollinated apomictic tree: Sorbus subcuneata (Rosaceae)
In plants, apomixis results in the production of clonal offspring via seed and can provide reproductive assurance for isolated individuals. However, many apomicts require pollination to develop functional endosperm for successful seed set (pseudogamy) and therefore risk pollination-limitation, particularly in self-incompatible species that require heterospecific pollen. We used microsatellite p...
متن کاملIsolation and characterization of microsatellite loci in Sorbus porrigentiformis and cross-amplification in S. aria and S. rupicola (Rosaceae)1
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC-BY-NC-SA 4.0), which permits unrestricted noncommercial use and redistribution provided that the original author and source are credited and the new work is distributed under the same license as the original. British whitebeams (Sorbus aria aggr.; Rosaceae) are an em-blematic case study of...
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: Curtis's Botanical Magazine
سال: 2022
ISSN: ['1355-4905', '1467-8748']
DOI: https://doi.org/10.1111/curt.12480