内生真菌多糖浸种对苦荞出苗及幼苗素质的影响

以川荞1号和西荞1号为试验材料,研究了内生真菌多糖(0、100、200、400、800 mg/kg)浸种对苦荞出苗和幼苗素质的影响。结果表明:内生真菌多糖浸种显著提高了川荞1号和西荞1号的出苗率,以100 mg/kg处理最高,比对照分别提高16.0%和17.4%。苦荞幼苗性状方面,内生菌多糖浸种显著增加了植株高度、第一节间长度和单株叶面积,两个品种表现趋势相同。浸种对苦荞幼苗各器官(根、茎和叶)的干物质重和根冠比有显著影响,均随着浓度的增加呈先升高后降低的变化趋势,以100 mg/kg浓度处理最高,两个品种表现趋势一致。苦荞幼苗的根系活性和SPAD值也以100 mg/kg处理最高,分别比对照高31.6%～34.9%和3.1%～3.6%。综合可知,采用100 mg/kg内生真菌多糖浸种最有利于提高苦荞出苗率和幼苗素质。

Effects of seed soaked by polysaccharide obtained endophytic fungus on the sprout and seedling quality of tartary buckwheat

The Chuanqiao1 and Xiqiao1 cultivars were used to investigate the effect of seed soaked by polysaccharide (0, 100, 200, 400, 800 mg/kg) obtained from endophytic fungus on the sprout and seedling quality of tartary buckwheat. The results showed that seed soaked by polysaccharide could improve the germination rate of Chuanqiao1 and Xiqiao1 cultivars. The treatment of 100 mg/kg was the highest, which was 16.0% and 17.4% significantly higher than CK, respectively. Seed soaked by polysaccharide significantly increased the plant height, the 1st internode length and leaf area per plant, and two cultivars showed the same trend. The root activity and SPAD value of the treatment of 100 mg/kg were the highest among all treatments, which were 31.6%~34.9% and 3.1~3.6% significantly higher than other treatments, respectively. Above all, the agricultural measure of seed soaked by polysaccharide (100 mg/kg) was beneficial to improve the germination rate and seedling quality of tartary buckwheat in this experiment.