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Wheat Information
Service
Number 82: 31-32 (1996)
Research Information
Recombination
potencies by gene transfer of Triticum monococcum and T.
dicoccum in T. aestivum -- Assessment of thirty years of
observation.
G.
Schumann
Humboldtstr 17 06618 Naumburg Germany
Keywords: Transfer, Genetic information, T. monococcum, T.
dicoccum, T. aestivum
The transfer and manifestation of genetic information from
Triticum monococcum L. and T. dicoccum Schrank. var.
Farrum Alef. (origins Dornburg) in T. aestivum (Schumann 1986)
shall be assessed after thirty years of observations. Hybrids between
T. dicoccum and T. monococcum are well stocked, very
vigorous, healthy, sterile. Following the pollination of those
F1 plants with pollens of seed wheat (T. aestivum)
embryos will be generated in low-endosperm caryopses which may be
cultivated in soil. In the segregating generations the plants differ
considerably with regards to their tiller, stalk length, fungus
infestation, fertility, ear shape and color:
Different grades of
fertility disturbances in the segregating generations are indication
of massive cytological recompositions. An accumulation of chromosomes
was found around 28 and 42. Only fertile plants were further
processed. They were compiled according to their respective
phenotypes (Four groups: A - D) and tested on plots of different
sizes (from 10 sqm to 2000 sqm) for a number of years.
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