【摘要】 通过不同浓度的 Ca Cl2 、KNO3、GA3溶液对银杏 Ginkgo biloba L.种子浸种 ,研究其种子的发芽力。结果表明 :Ca Cl2 、KNO3、GA3在不同程度上提高银杏种子的发芽率和发芽势。三者浸种的最适浓度分别为 2 5 mm ol/ L、0 .4mol/ L 和 5 0 0 m g/ L。其中以 GA3的处理效果最好 ,用 5 0 0 mg/ L 浓度处理时可使银杏种子发芽率和发芽势分别提高 33.3%、2 4.9% ,而且幼苗生长健壮。同时用这 3种化学药物浸种还能降低烂种率、提早发芽。更多还原

【Abstract】 Semen Ginkgo, the seed of Ginkgo biloba L were soaked with different concentrations of CaCl 2, KNO 3 and gibberallin A 3 (GA 3) solutions to assess their effects on germination The results showed that CaCl 2, KNO 3 and GA 3 increased germination percentage and germinating viability of Semen Ginkgo The best concentration was 500 mg/L of GA 3, which increased 33 3% in germination percentage and 24 9% in germinating viability更多还原