Variation with seed germination index and seed vigor of three soybean varieties Jindou 19, Jinda 53 and Jinda 74 were studied through the approach of artificial acceleration of aging under the air tight condition of high temperature( (45 ± 1)℃) and high humidity (100% relative humidity), then the aging seed were treated in 10% ,20% and 30%PEG. The results showed that germination index of the three soybean varieties gradually decreased with extension of aging treatment time, the seed vigor of the three varieties showed a variation trend of decreasing firstly, then increased with the prolonged aging process. After priming treatments with different concentrations PEG, the seed vigor of the three soybean varieties were raised and seed resistance were en-hanced. But it was found that the priming effect was not so good with the 10% PEG; and the abilities to aging resistance of the three soybeans were enhanced with 20% and 30% PEG when the degree of aging wasn't severe. At the mean time, it was noticed that the -priming effect of the seed of Jinda 53 did very well with 30% PEG, while the priming effect benefited from the seed of Jindoul9 and Jinda 74 with 20% PEG.
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万方数据
