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《Acta Agrestia Sinica》 1995-04
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A Study on the Seed Vigour of Tall Fescue

Han Jianguo; Mao Peisheng; Pu Xinchun; Li Min(Grassland Institute,Beijing Agricultural University,Beijing, 100094)  
Accelerated ageing test,conductivity test,greenhouse seedling emergence test,field seedling emergence test and standard germination test were used for studying seed vigour in 6 tall fescue turf seed lotswhich were introduced from Oregon of the USA. The results showed that seed vigour differed significantly between different seed lots. The seed lots having high germination rates and their germination rates were no significant differences in standard germination tates,but differed significantly in germination rates after accelerated ageing,field seedling emergence rates and conductivity values. Germination rates after accelerated ageing,and conductivity values were correlated signifcantly with field seedling emergence rates. The germinationrates after accelerated ageing were closer to the field seedling emergence rates than the standard germinationrates were. From the seed lots with high standard germination rates,to the seed lots with low standard germination rates,the seed vigour also decreased from high to low. However, the decreasing speed of the standardgermination rates were slower than that of the germination rates after accelerated ageing and field seedling emergence rates. The thousand seed weights of the seed lots were not correlated significantly with seed vigour,seedling shoot height and seedling shoot dry matter. However,the shoot height and shoot dry matter of theseedling were influenced partly by seed weight.
【CateGory Index】: S812
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