apomict

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apomict

any plant which is produced by APOMIXIS.
References in periodicals archive ?
Inheritance studies indicated a single-locus model of genetic control of apomixis in the signalgrass-palisadegrass-ruzigrass agamic complex (Ndikumana, 1985; Valle et al., 1994; Valle and Savidan, 1996): tetraploid apomicts are simplex for a dominant allele (Aaaa) at the putative "apomixis locus," sexuals being homozygous recessive at the locus and either diploid (aa) or tetraploid (aaaa).
The mutant is thus a partial apomict: it starts to produce seed apomictically, yet unlike natural apomictic plants, it produces no viable seed.
Clonal diversity in Taraxacum officinale (Compositae), an apomict. Heredity 53:1-10.
decumbens hybrids, which were expected to segregate for edaphic adaptation because of the typically high heterozygosity level of apomicts such as B.
Inferred Population Genetical Evidence.--Strict apomicts evolve separately along clonal lines.
True apomicts identified in the first Class 2-[F.sub.x] cycle should also produce white (or red) Class 2-[F.sub.2y] seed in the second cycle.
In pseudogamous apomicts, pollen is necessary for successful seed production (probably required for endosperm formation) but does not fertilize the ovules (Richards, 1986; Asker and Jerling, 1992).
Tetraploid bahiagrass plants are generally obligate apomicts, and improvement has been hampered by the lack of stable, sexual tetraploid types.
Hybrids with progeny exhibiting partial uniformity and a degree of variability were classified as facultative apomicts, and hybrids with completely variable progeny were scored as sexual.
In apomicts, the development of an unreduced egg in the female gametophyte is normal; therefore, 2n + n fertilization should occur at a higher frequency in apomicts than in sexual plants.
Most buffelgrass accessions are obligate apomicts (Fisher et al., 1954; Snyder et al., 1955); however, facultative apomicts that reproduce by sexual and apomictic means also have been reported (Bray, 1978; Sherwood et al., 1980).