Effect of Seed Storage on Integrity of Grass Germplasm
نویسنده
چکیده
Experiment on estimation of qualitative changes in populations of meadow fescue (Festuca pratensis Huds.) after seed storage in different conditions were taken. Phenotypical traits for plants derived from seeds stored during 54 months in two different kind of storage conditions were compared. Storage of meadow fescue seed during 54 months in unfavourable conditions resulted in decrease of initial germination as well as in increase of abnormal seedlings and variation. Germination of seed samples stored in cold and dry conditions remain at the initial level. Results of the above experiment prove great variability of tested samples in case of reaction to unfavourable storage conditions. No close relation between decreased germination and intensity of phenotypical changes was observed. However, decrease in germination below 35% resulted (in case of few accessions) in chlorophyll aberrations, faster flowering, shorter inflorescences and reduced viability of pollen grains.
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