Institute Cytology and Genetics

Laboratory of Plant Population Genetics

Head S.I.Maletski, Dr.Biol.Sci., Prof.

Segregation for fruit color (white and red) in apozygotic offspring of strawberry

Emphasis is on two interrelated problems: (a) the genetically controlled system of seed productivity, such as self- and cross-incompatibility within plant populations, nuclear and cytoplasmic sterility of pollen, agamiospermy (seed reproduction with no involvement of pollen parent); (b) the effect of polyploidy on the reproductive properties of plants. Changes in the reproductive system have revolutionized breeding practice in the 20th century. Substitution of the biparental mode of seed reproduction by the uniparental offers new prospects for plant breeding in the 21st century. A new method for passage to the uniparental reproduction was developed for sugar beet (Beta vulgaris L.) and strawberry (Fragaria ananassa Duch.). This allows the large scale production of apozygotic seed offspring in these plant species. A theoretical basis for gene analysis in apozygotic plant offspring was established. Use of genetic variability arising in apozygotic offspring opens up new, so far, little studied, prospects for plant breeding. A synthetic interline hybrid of sugar beet Kasiba 14 was zoned in collaboration with the Kazakh Agricultural Research Institute. These varieties of large fruit strawberry developed by taking advantage of variability in apozygotic seed offspring are now passing State trials.