Results 21 to 30 of about 82,503 (224)
Meiotic behavior of two polyploid species of genus Pleurodema (Anura: Leiuperidae) from central Argentina [PDF]
, 2014 Polyploidy is an important evolutionary force but rare in vertebrates. However, in anurans, the genus Pleurodema has polyploid species, two of them tetraploid and one octoploid.
Grenat, Pablo Raúl +4 more
core +2 more sources
Niche divergence and limits to expansion in the high polyploid Dianthus broteri complex [PDF]
, 2019 Niche evolution in plant polyploids remains controversial and evidence for alternative patterns has been reported. Using the autopolyploid Dianthus broteri complex (2×, 4×, 6× and 12×) as a model, we aimed to integrate three scenarios – competitive ...
Balao Robles, Francisco J. +2 more
core +1 more source
Fertility & Reproduction, 2019 Background: Fertilisation assessment is routinely made at 16–18 hours post-ICSI and 18–20 hours post-insemination. However, the absence of pronuclei (PN) during standard fertilisation assessment does not necessarily indicate fertilisation failure.
Adelle Yun Xin Lim, Colin Soon Soo Lee
doaj +1 more source
Bioscience Journal, 2018 This research aimed to evaluate the dry matter yield, structural composition and nutritive characteristics of diploid and tetraploid annual ryegrass cultivars on different phenological development to haymaking on lowland soils.
Olmar Antônio Denardin Costa +7 more
doaj +1 more source
Dynamic ploidy changes drive fluconazole resistance in human cryptococcal meningitis. [PDF]
, 2018 BACKGROUND: Cryptococcal meningitis (CM) causes an estimated 180,000 deaths annually, predominantly in sub-Saharan Africa, where most patients receive fluconazole (FLC) monotherapy. While relapse after FLC monotherapy with resistant strains is frequently
Berman, J +13 more
core +6 more sources
Ciência Rural, 1999 Sete acessos da gramínea forrageira Hemarthria altissima, diplóides e tetraplóides africanos e tetraplóides brasileiros, foram analisados com fins de caracterizar, nos diferentes níveis de ploidia, os parâmetros diâmetro dos grãos de pólen e tamanho dos ...
Solange Bosio Tedesco +2 more
doaj +1 more source
Light-dependent regulation of DEL1 is determined by the antagonistic action of E2Fb and E2Fc [PDF]
, 2011 Endoreduplication represents a variation on the cell cycle in which multiple rounds of DNA replication occur without subsequent chromosome separation and cytokinesis, thereby increasing the cellular DNA content.
Berckmans, Barbara +5 more
core +5 more sources
Environmental and Experimental BotanyClimate change leads to more extreme weather events. Therefore, high stress tolerance is becoming increasingly critical for plants. A higher ploidy level has been reported to lead to higher stress tolerance in plants.
Kerstin Haldan +9 more
doaj +1 more source
Problems associated with the use of Heliantbus species for the breeding of the cultivated sunflower: Ploidy level or phylogenetic distance? [PDF]
Selekcija i Semenarstvo, 2000 Of the 49 species that comprise the genus Helianthus, 42 are present in the wild species collection at the Institute of Field and Vegetable Crops. This is a rich bank of desirable genes for sunflower breeders.
Atlagić Jovanka, Škorić Dragan
doaj
Hybridization between wild and cultivated potato species in the Peruvian Andes and biosafety implications for deployment of GM potatoes [PDF]
, 2008 The nature and extent of past and current hybridization between cultivated potato and wild relatives in nature is of interest to crop evolutionists, taxonomists, breeders and recently to molecular biologists because of the possibilities of inverse gene ...
Celis Gamboa, B.C. +4 more
core +2 more sources