8th INTERNATIONAL WHEAT CONFERENCE

observed as a result of using hexaploid species T. spelta k 1731 in hybridization (up to
74%). When tetraploid species were used, persistently high values for the analyzed parameter
were in combinations with involvement of T. persicum k 11899 (21, 11-37, 20%).
In remote hybridization, defective development hybrid embryo and its abnormal interrelation
with covering tissues and endosperm are known to be an important problem. The
produced hybrid seeds were wrinkled with poorly plump endosperm but with embryo.
In some combinations, practically there was no endosperm in a part of seeds, however,
application of biotechnological methods in vitro made it possible to preserve the obtained
hybrid material.
Cytological analysis of remote wheat hybrids has revealed pronounced disturbances in
passing meiosis stages that assumes the presence of alien genetic material in their genome.
The morphological analysis data have corroborated this assumption. Traits of wild
wheat relatives (brown colour and stiffness of spike scale, spike fragility, absence of wax
bloom on spike) were detected in the produced hybrid material.
Thus, we have obtained hybrids from crosses between cultivated common wheat cultivars
and wild Triticeae tribe species by method of remote hybridization and biotechnology for
enriching and improving common wheat gene pool. At present qualitatively new promising
forms, characterized by high resistance to rust and mildew, early ripeness, increased
protein content in grain, were selected from the developed hybrid material of advanced
generations.
The research was supported by Belarus Foundation for Basic Research, grant
B09SB-004.
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