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FEATURES OF LONG TERM SEEDS STORAGE OF RYE GENEPOOL ACCESSIONS

FEATURES OF LONG TERM SEEDS STORAGE OF RYE GENEPOOL ACCESSIONS

Institution

Section

PLANT GENETIC RESOURCES CONSERVATION

Abstract

Goal. Determination of the optimal seed storage conditions for rye seed samples after monitoring results of the storaged seed state, ways identification to improve the storage conditions for rye samples collection.

Results and discussions. The analysis of seed germination monitoring of 22 samples of rye seed, two samples of rye mountain that was preserved for a long time at low temperature 4 ° C, with 5-8 % moisture content has been carried on. The germination of rye variety seeds with moisture 5,6 % after five years of storage decreased by 7 %. The germination of rye variety seeds that were preserved with the moisture content 6-7 % after 5 years of storage was not significantly changed. In the next five years it was unchanged or decreased in some varieties. There was no effect on seed germination or was increasing about 10% for winter and spring rye seed storaged during 5-9 years at 7-7,5 % moisture content. The storage of winter rye seed with moisture 7,8 % and above had no effect on the germination after first four - five years of storage. In the next five years there was a gradual decrease germination by 4-6 %. There were not differences on loss of seed viability between winter and spring rye seed, the seeds that have different status (line, population, variety). The germination of rye mountain seeds with moisture content about 6 % increased by 27 % after four-seven years of storage. The germination of tetraploid rye seeds was not changed after seed storage during seven years with 6,8 % moisture content.

Conclusions. Optimal moisture content for long-term rye seed storage at low temperatures is 6,7 %, which allows to store seeds about 10 years with viability level not below 80 %.

Keywords

rye, genebank, seeds, storage, moisture content, temperature