意大利黑麦草的多倍体类型具有高产、抗病,越冬性好等特点。用秋水仙素处理时的效果好坏取决于溶液的浓度、处理持续时间、材料的生理状态及其他条件。该试验的目的是鉴定各处理方式并说明最佳方案。材料是瓦尔别品种的干种子、萌动种子和发芽种子。每个处理中将100粒种子浸于不同浓度的秋水仙素水溶液中,温度25℃,各处理的效果按处理材料中四倍体发生率和植株存 The polyploid type of Italian ryegrass is characterized by high yield, disease resistance and good wintering. Colchicine treatment with good or bad depends on the concentration of the solution, the treatment duration, the physiological state of the material and other conditions. The purpose of this test is to identify each treatment and to explain the best option. The material is a dry seed, a germinating seed and a germinating seed of the Varlian variety. 100 seeds per treatment immersed in different concentrations of colchicine solution at a temperature of 25 ° C, the effect of each treatment according to the incidence of tetraploid material and plant stock