Results 21 to 30 of about 744 (199)

Diploid aposporous sunflower forms triploid BIII progeny displaying increased apospory levels and non-random genetic mutations [PDF]

Scientific Reports
Apomixis (asexual reproduction via seeds) has the potential to revolutionize sunflower breeding. In previous studies, we identified a diploid sunflower line (Rf975) that naturally exhibits extra gametophytes resembling aposporous apomictic embryo sacs ...
Silvina Pessino, Graciela Nestares, Marta B. Bianchi, Iara Katzaroff, Lucía Amato, Marika Bocchini, Gianpiero Marconi, Emidio Albertini, Ana C. Ochogavía   +8 more
doaj   +2 more sources

Sequence characterization, in silico mapping and cytosine methylation analysis of markers linked to apospory in Paspalum notatum [PDF]

Genetics and Molecular Biology, 2012
In previous studies we reported the identification of several AFLP, RAPD and RFLP molecular markers linked to apospory in Paspalum notatum. The objective of this work was to sequence these markers, obtain their flanking regions by chromosome walking and ...
Maricel Podio, María P. Rodríguez, Silvina Felitti, Juliana Stein, Eric J. Martínez, Lorena A. Siena, Camilo L. Quarin, Silvina C. Pessino, Juan Pablo A. Ortiz   +8 more
doaj   +1 more source

Seasonal expression of apospory in bahiagrass

Tropical Grasslands-Forrajes Tropicales, 2013
Flowering plants can reproduce sexually (outcrossing and/or selfing) and/or asexually. Sexual reproduction implies the successful completion of meiosis and double fertilization for the formation of both the embryo and the endosperm. In contrast, gametophytic apomixis is an asexual mode of reproduction through seeds, that in-volves parthenogenetic ...
Esteban F. Rios, Ann Blount, Kevin E. Kenworthy, Carlos A. Acuña, Kenneth H. Quesenberry   +4 more
doaj   +4 more sources

Apospory appears to accelerate onset of meiosis and sexual embryo sac formation in sorghum ovules [PDF]

BMC Plant Biology, 2011
Background Genetically unreduced (2n) embryo sacs (ES) form in ovules of gametophytic apomicts, the 2n eggs of which develop into embryos parthenogenetically. In many apomicts, 2n ES form precociously during ovule development.
Elliott Estella, Jamison Michelle, Carman John G, Dwivedi Krishna K, Naumova Tamara N   +4 more
doaj   +2 more sources

Construction of AFLP-based cosegregation groups of tetraploid Plicatula species and identification of markers linked to apomixis [PDF]

Rodriguésia, 2022
Most species of Plicatula are important native forages. This work aimed to build framework cosegregation groups of the apomictic tetraploid race of Paspalum guenoarum cv. Rojas and localize the locus controlling apomixis in the species.
Patricia Mabel Aguilera, Florencia Galdeano, Juan Pablo Amelio Ortiz, Camilo Luís Quarin, Francisco Espinoza   +4 more
doaj   +1 more source

Life cycle and morphogenetic differentiation in heteromorphic cell types of a cosmopolitan marine microalga. [PDF]

New Phytol
Summary Gephyrocapsa huxleyi is a prevalent, bloom‐forming phytoplankton species in the oceans. It exhibits a complex haplodiplontic life cycle, featuring a diploid‐calcified phase, a haploid phase and a third ‘decoupled’ phase produced during viral infection. Decoupled cells display a haploid‐like phenotype, but are diploid.
Bousquet L, Fainsod S, Decelle J, Murik O, Chevalier F, Gallet B, Templin R, Schwab Y, Avrahami Y, Koplovitz G, Ku C, Frada MJ.   +11 more
europepmc   +2 more sources

Variation of Residual Sexuality Rates along Reproductive Development in Apomictic Tetraploids of Paspalum

Plants, 2022
Most apomictic plants are facultative, maintaining the ability to reproduce sexually at different frequencies depending on the taxa, ploidy, and reproductive stage.
Anna Verena Reutemann, Ana Isabel Honfi, Piyal Karunarathne, Fabiana Eckers, Diego Hernan Hojsgaard, Eric Javier Martínez   +5 more
doaj   +1 more source

Cyto-Embryological Analysis of Wild Kentucky Bluegrass Germplasm in Gansu Province, China

Agronomy, 2023
Reproduction studies, particularly embryology, represent basic information of any plant. However, the current embryological information is fragmentary for Kentucky bluegrass (Poa pratensis L.).
Jinqing Zhang, Huiling Ma
doaj   +1 more source

Apomictic development during different flower development stages in Crataegus tanacetifolia (Lam.) Pers., endemic to Turkey

Notulae Scientia Biologicae, 2021
In this study, aposporic apomictic development and its relation to the different flower development stages were investigated by light and fluorescence microscopy in Crataegus tanacetifolia (Lam.) Pers. (Rosaceae). At pre-anthesis stage, aposporic initial
Aslıhan ÇETİNBAŞ-GENÇ, Meral ÜNAL   +1 more
doaj   +1 more source

Environmental influence on reproductive traits of buffel grass facultative apomictic genotypes and its implication in plant breeding

Crop Science, Volume 63, Issue 6, Page 3382-3392, November/December 2023., 2023
Abstract Cenchrus ciliaris L., a perennial C4 grass, is one of the most widely used forage species in warm and dry regions worldwide. The widespread use of the cultivar Texas raises concerns about genetic homogeneity and vulnerability. Hybridizations among facultative individuals could widen the genic pool. Therefore, a reproductive characterization of
Miguel A. Sánchez, Cecilia I. Bruno, Mariana P. Quiroga, Karina A. Grunberg, Sabrina M. Griffa   +4 more
wiley   +1 more source