Abstract
The methods of experimental mitotic and meiotic polyploidy in grapes are represented in the article. Results of cytological, histo-anatomical, biomorphological researches of induced autotetraploids are shown. Genetic characteristics, parameters of generative organs, quantitative and structural genome changes were studied. Comparative quantitative changes in the content of chloroplast and mitochondrion DNAs and RNAs in diploids and autotetraploids were defined. Also are shown. The biology-economic evaluation of autotetraploids on comparison with the initial grape variety is represented.
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