Results 31 to 40 of about 302 (111)

Engineering meiotic recombination pathways in rice

Plant Biotechnology Journal, Volume 17, Issue 11, Page 2062-2077, November 2019., 2019
Summary In the last 15 years, outstanding progress has been made in understanding the function of meiotic genes in the model dicot and monocot plants Arabidopsis and rice (Oryza sativa L.), respectively. This knowledge allowed to modulate meiotic recombination in Arabidopsis and, more recently, in rice. For instance, the overall frequency of crossovers
Ian Fayos, Delphine Mieulet, Julie Petit, Anne Cécile Meunier, Christophe Périn, Alain Nicolas, Emmanuel Guiderdoni   +6 more
wiley   +1 more source

The classification of asexual organisms: Old myths, new facts, and a novel pluralistic approach

TAXON, Volume 67, Issue 6, Page 1066-1081, December 2018., 2018
Abstract Organisms reproducing via asexuality harbor a great diversity of lineages, morphotypes and ecotypes. However, classification of asexual taxa does not fit into contemporary species concepts, and hence the diversity of apomictic plant complexes is not well reflected in taxonomy.
Elvira Hörandl
wiley   +1 more source

Sexual intraspecific recombination but not de novo origin governs the genesis of new apomictic genotypes in Potentilla puberula (Rosaceae)

TAXON, Volume 67, Issue 6, Page 1108-1131, December 2018., 2018
Abstract Apomixis – asexual reproduction via seeds – might arise de novo following polyploidisation events, or via reproductive transfer of apomixis. Both processes can be obtained within species or via hybridisation. We aimed to determine the origin of apomictic genotypes in Potentilla puberula, a rosaceous species showing reproductive differentiation
Flavia Domizia Nardi, Christoph Dobeš, Dorothee Müller, Tobias Grasegger, Tuuli Myllynen, Henar Alonso-Marcos, Andreas Tribsch   +6 more
wiley   +1 more source

Genetic fine-mapping of DIPLOSPOROUS in Taraxacum (dandelion; Asteraceae) indicates a duplicated DIP-gene

BMC Plant Biology, 2010
Background DIPLOSPOROUS (DIP) is the locus for diplospory in Taraxacum, associated to unreduced female gamete formation in apomicts. Apomicts reproduce clonally through seeds, including apomeiosis, parthenogenesis, and autonomous or pseudogamous ...
Bakx-Schotman Tanja, Milanovic-Ivanovic Slavica, Vijverberg Kitty, van Dijk Peter J   +3 more
doaj   +1 more source

Asymmetric reproductive interference: The consequences of cross‐pollination on reproductive success in sexual–apomictic populations of Potentilla puberula (Rosaceae)

Ecology and Evolution, Volume 8, Issue 1, Page 365-381, January 2018., 2018
We tested for reproductive compatibility of naturally co‐occurring tetraploid sexuals and penta‐ to octoploid apomicts in the rosaceous species Potentilla puberula performing controlled crosses. We estimated the role of selfing as crossing barrier and effects of cross‐ and self‐pollen quality as well as maternal:paternal genomic ratios in the endosperm
Christoph Dobeš, Susanne Scheffknecht, Yulia Fenko, Dagmar Prohaska, Christina Sykora, Karl Hülber   +5 more
wiley   +1 more source

Status of Global Pearl Millet Breeding Programs and the Way Forward

Crop Science, Volume 57, Issue 6, Page 2891-2905, November–December 2017., 2017
Pearl millet [Pennisetum glaucum (L.) R. Br.] is a warm‐season, C4 annual cereal primarily grown in Africa and India for food and fodder. It is also grown in the United States, mainly as a forage crop on a limited area. It is the sixth most important cereal crop in the world. More than 90 million people around the world rely on it as a food grain.
Desalegn D. Serba, Ramasamy Perumal, Tesfaye T. Tesso, Doohong Min   +3 more
wiley   +1 more source

Comparative transcriptome analysis of the wild-type model apomict Hieracium praealtum and its loss of parthenogenesis (lop) mutant

BMC Plant Biology, 2018
Background Asexual seed formation (apomixis) has been observed in diverse plant families but is rare in crop plants. The generation of apomictic crops would revolutionize agriculture, as clonal seed production provides a low cost and efficient way to ...
Sophia Bräuning, Andrew Catanach, Janice M. Lord, Ross Bicknell, Richard C. Macknight   +4 more
doaj   +1 more source

Induction of Synthetic Apomixis in Two Sorghum Hybrids Enables Seed Yield and Genotype Preservation Over Multiple Generations

Plant Biotechnology Journal, Volume 24, Issue 3, Page 1712-1724, March 2026.
ABSTRACT Induction of apomixis, or clonal reproduction through seed, could economise commercial hybrid seed production and enable smallholder farmers to save and sow hybrid seed. Here, we demonstrate the synthetic induction of apomixis in two sorghum hybrids and show that the clonal hybrid seed can be maintained across multiple seed generations.
Marissa K. Simon, Li Yuan, Ping Che, Kevin Day, Todd Jones, Ian D. Godwin, Anna M. G. Koltunow, Marc C. Albertsen   +7 more
wiley   +1 more source

Emergence of apospory and bypass of meiosis via apomixis after sexual hybridisation and polyploidisation

New Phytologist, Volume 204, Issue 4, Page 1000-1012, December 2014., 2014
Summary Hybridisation and polyploidy are major forces contributing to plant speciation. Homoploid (2x) and heteroploid (3x) hybrids, however, represent critical stages for evolution due to disturbed meiosis and reduced fertility. Apomixis – asexual reproduction via seeds – can overcome hybrid sterility, but requires several concerted alterations of ...
Diego Hojsgaard, Johann Greilhuber, Marco Pellino, Ovidiu Paun, Timothy F. Sharbel, Elvira Hörandl   +5 more
wiley   +1 more source

Sexual polyploidization in plants – cytological mechanisms and molecular regulation

New Phytologist, Volume 198, Issue 3, Page 670-684, May 2013., 2013
Summary In the plant kingdom, events of whole genome duplication or polyploidization are generally believed to occur via alterations of the sexual reproduction process. Thereby, diploid pollen and eggs are formed that contain the somatic number of chromosomes rather than the gametophytic number.
Nico De Storme, Danny Geelen
wiley   +1 more source