Results 1 to 10 of about 1,647 (191)
Seasonal expression of apospory in bahiagrass [PDF]
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.
Esteban F. Rios +4 more
doaj +9 more sources
Environmental and Genetic Factors Affecting Apospory Expressivity in Diploid Paspalum rufum [PDF]
Plants, 2021 In angiosperms, gametophytic apomixis (clonal reproduction through seeds) is strongly associated with polyploidy and hybridization. The trait is facultative and its expressivity is highly variable between genotypes.
Mariano Soliman +5 more
doaj +3 more sources
Differential Epigenetic Marks Are Associated with Apospory Expressivity in Diploid Hybrids of Paspalum rufum [PDF]
Plants, 2021 Apomixis seems to emerge from the deregulation of preexisting genes involved in sexuality by genetic and/or epigenetic mechanisms. The trait is associated with polyploidy, but diploid individuals of Paspalum rufum can form aposporous embryo sacs and ...
Mariano Soliman +6 more
doaj +3 more sources
Spotting the Targets of the Apospory Controller TGS1 in Paspalum notatum [PDF]
Plants, 2022 Sexuality and apomixis are interconnected plant reproductive routes possibly behaving as polyphenic traits under the influence of the environment.
Carolina Marta Colono +5 more
doaj +3 more sources
Diploid aposporous sunflower forms triploid BIII progeny displaying increased apospory levels and non-random genetic mutations [PDF]
Scientific ReportsApomixis (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 +8 more
doaj +3 more sources
Apospory and Diplospory in Diploid Boechera (Brassicaceae) May Facilitate Speciation by Recombination-Driven Apomixis-to-Sex Reversals [PDF]
Frontiers in Plant Science, 2019 Apomixis (asexual seed formation) in angiosperms occurs either sporophytically, through adventitious embryony, or gametophytically, where an unreduced female gametophyte (embryo sac) forms and produces an unreduced egg that develops into an embryo ...
John G. Carman +15 more
doaj +3 more sources
Heterosis and Expressivity of Apospory in Tetraploid Bahiagrass Hybrids [PDF]
Crop Science, 2015 ABSTRACTBreeding procedures developed for apomictic species are based on the idea of fixing superior hybrids by apomixis. However, scarce information is available about the occurrence of heterosis in apomictic hybrids. The objective was to generate a group of apomixis‐segregating tetraploid bahiagrass (Paspalum notatum Flüggé) families, evaluate the ...
A. Zilli +6 more
semanticscholar +6 more sources
Frontiers in Plant Science, 2020 Forage grasses are mainly used in animal feed to fatten cattle and dairy herds, and guinea grass (Megathyrsus maximus) is considered one of the most productive of the tropical forage crops that reproduce by seeds.
Thamiris G. Deo +10 more
doaj +2 more sources
Frontiers in Plant Science, 2018 Hybridization and polyploidization play important roles in plant evolution but it is still not fully clarified how these evolutionary forces contribute to the establishment of apomicts.
Birthe H. Barke +2 more
doaj +2 more sources
Nature, 1884 MY note in NATURE (p. 151) on the remarkable mode of reproduction in ferns discovered by Mr. Druery has brought me two friendly communications, both of which deserve a few words.
W. T. Dyer
semanticscholar +2 more sources