• species
  • Here we review how fluorescence in situ hybridisation (FISH) and genomic in situ hybridisation (GISH) have been applied to: 1) studies of interspecific hybridisation and polyploidy in nature, 2) analyses of phylogenetic relationships between species, 3) genetic mapping and 4) analysis of plant breeding materials. (mdpi.com)
  • According to Moran, a large number of species have popped into existence through hybridization and polyploidy rather than through Darwinian evolution. (wordpress.com)
  • Referring to the second volume ( Pteridophytes and Gymnosperms ) of the Flora of North America , published in 1993, which was the first scientific treatise on plants to include reticulograms, Moran wrote: "Of the 420 species of ferns and lycophytes described in the treatise, about a hundred originated as hybrids and later became fertile through polyploidy" (ibid. (wordpress.com)
  • Often, however, polyploidy steps in to work with hybridization to create new species within the greater fern miyn . (wordpress.com)
  • This fits in well with a Genesis framework: after the original creation of plants "according to their miyn /genus/kind," the fern miyn/genus began to spread across the globe, undergoing a combination of hybridization and polyploidy as the years progressed, with each new fern species spreading slightly farther than the geographical range of its parent species. (wordpress.com)
  • Appearing in the fossil record, this would certainly create the impression that these new species sprang up as the result of evolution, when it could just as well have been what is still occurring today for scientists to witness and report on: the creation of new species through hybridization that produces viable offspring via polyploidy. (wordpress.com)
  • Polyploidy occurs in some animal s, such as goldfish , salmon , and salamander s, but is especially common among fern s and flowering plant s, including both wild and cultivated species . (askdefine.com)
  • The genus is also known for its polyploidy, with some species having up to 12 sets of chromosomes. (wikipedia.org)
  • Polyploidy is pervasive in plants and some estimates suggest that 30-80% of living plant species are polyploid, and many lineages show evidence of ancient polyploidy (paleopolyploidy) in their genomes. (wikipedia.org)
  • genus
  • It is not unreasonable to suppose that such extraordinary polyploidy has contributed to the separation of this genus from its related genera within the family-all from the one original created kind. (wordpress.com)
  • We study three aspects of polyploidy , focusing on members of the genus Arabidopsis . (ucdavis.edu)
  • gene
  • Endoreduplication (also referred to as endoreplication or endocycling) is replication of the nuclear genome in the absence of mitosis, which leads to elevated nuclear gene content and polyploidy. (wikipedia.org)
  • seeds
  • The present study aimed at exploring an effective way to produce polyploidy using seeds or buds from three herbaceous peony cultivars ('Fen Yu Nu', 'Zhu Sha Pan' and 'Zhong Sheng Fen') by colchicine treatment. (ishs.org)