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Medientyp:
E-Artikel
Titel:
Parthenogenesis in Tetraploid Lilium longiflorum
Beteiligte:
Emsweller, S. L.;
Uhring, Joseph
Erschienen:
American Botanical Society, 1962
Erschienen in:American Journal of Botany
Sprache:
Englisch
ISSN:
0002-9122;
1537-2197
Entstehung:
Anmerkungen:
Beschreibung:
<p>Nine maternal polyhaploids from 1 capsule and 1 tetraploid from another were produced following pollination of 2 tetraploid Lilium longiflorum plants with pollen from diploids of the same species. One of the 9 plants had 25 chromosomes; the extra chromosome was identified as a modified D. Two other plants had 2 new chromosomes each and the remaining 6 had 24 unmodified chromosomes. Translocations in meiosis of the tetraploid produced the new chromosomes. One plant obtained from a second capsule had 48 chromosomes. The 9 plants were smaller than diploids and the 48-chromosome plant was considered a diploid until mitosis was observed. The 9 plants originated from unfertilized eggs of the tetraploid, and the 48-chromosome plant presumably from chromosome doubling of an egg cell.</p>