2010), for example, to test the ploidy status of aposporous
gametophytes of Platycerum bifurcatum (Cav.) C.
Otherwise, the 2n gamete of an additional aposporous
sac can be fertilized by a male haploid gamete from a neighbouring apomictic 4x plant (2n) to establish a new apomictic 4x genotype, as was achieved experimentally in P.
Frio is an aposporous
apomict, and its mode of reproduction was determined by (i) cytologically observing megasporogenesis and embryo sac development and (ii) progeny testing.
Diplosporous and aposporous
apomixis in a pentaploid race of Paspalum minus.
The remaining ovules had immature or aborted embryo sacs, but aposporous
sacs were not observed.
Of 118 mature megagametophytes observed, none had aposporous
In the aposporous
form of apomixis, the female gametophyte (embryo sac) develops from an unreduced somatic nucellar cell in the ovule.
The utility of RAPD markers was explored in Kentucky bluegrass in determining the genetic origins of aberrant plants derived from facultative aposporous
apomixis using the improved procedure with silver-stained polyacrylamide gels (Huff and Bara, 1993).
In the genus Paspalum, the absence of antipodal cells usually indicates aposporous
Quantitative analysis of aposporous
parthenogenesis in Poa pratensis genotypes.
In contrast with MMCs from diplosporous and tetrasporic species, MMCs from aposporous
Kentucky bluegrass (Naumova et al., 1993) and Guineagrass (Panicum maximum Jacq., Naumova and Willemse, 1995) are enveloped with callose.
Production of apomictic seed by buffelgrass is based on formation of meiotically unreduced, aposporous
embryo sacs of the Panicum type followed by pseudogamous, parthenogenetic development of the embryo (Fisher et al., 1954; Nogler et al., 1984).