Dog-roses have some special genetic tricks to cope with odd-ploidy.
Tag - meiosis
Alex Assiry
Botanists Pull Apart the Genes of Bananas to See How They Came Together
Banana genes reveal how they may have passed through other hybrid stages.
Establishing the cell biology of apomixis in Boechera
The genus Boechera (Brassicaceae) is comprised of both sexual and apomictic species, permitting comparative analyses of meiotic disturbances and parthenogenesis. Hybridization, polyploidy and environmental adaptation...
The meiotic behaviour of doubled-diploid and the origin of triploid limes
Lime is the only Citrus horticultural group including natural polyploid cultivars (C. latifolia and C. aurantiifolia) in addition to diploid species. Rouiss et al. uses cytogenetic analysis and molecular marker...
botanyone
The Switch To Generation Sex…
Hugh Dickinson on a new article in Science that sheds more light on the Alternation of the Generations. When does a diploid plant decide to become a haploid? Anyone who has sat in a botany class from high school onwards...
Guest Author
Spontaneous hybridization in wild roses
A propensity to form polyploid hybrids is a peculiar feature of roses. Herklotz and Ritz investigate the population genetics of forty five mixed stands of dog roses across Central and South-Eastern Europe using...
Chromosome pairing in Musa interspecific cultivars
Most cooking and several desert bananas are interspecific triploid hybrids between Musa acuminata (A genome) and M. balbisiana (B genome). To investigate the possibility of chromosome exchanges between these two...
Stamen development and dormancy in apricot
Temperate woody perennials become dormant over winter; but dormancy is also a prerequisite for adequate flowering, thus limiting their cultivation at warmer latitudes. Julian et al. show that dormancy appears to mark a...
