川产鱼腥草种质资源的同工酶分析

川产鱼腥草种质资源的过氧化物酶和酯酶同工酶分析结果发现,存在较丰富的同工酶变异类型,共有6种过氧化物酶和10种酯酶酶谱类型,每种过氧化物酶谱类型具4～6条酶带,酯酶酶谱类型具5～8条酶带。栽培和野生居群酶谱类型一致,而峨眉蕺菜和蕺菜种间亲缘关系较近,难以根据同工酶谱加以区分。试验结果还表明,四川鱼腥草种质资源过氧化酶酶带数在纬度偏北地区相对较多,偏南地区相对较少,酯酶酶谱在此范围内无地理分布差异。

Isozymes Variations among the Germplasm Resources of Houttuynia in Sichuan

The peroxidase and esterase isozymes of the germplasm resources of Houttuynia in Sichuan were analyzed.The results showed that it existed plentiful isozymes variations among the germplasm resources of Houttuynia in Sichuan. The cultivated populations had the same isozymes band types as the wild ones.There were 6 different types of peroxidase isozymes bands and 10 different esterase isozymes band totally. Each peroxidase band type was composed of 4 to 6 bands,and esterase isozymes hsd 5 to 8 bands.There was no significant difference between Houttuynia cordata and Houttuynia emeiensis populations in their isozymes bands types. The results also showed that the number of peroxidase isozymes bands in northern areas was somewhat higher than that in southern areas. However, esterase isozymes band types had no geographic differences.