摘要
用虎耳草科７种植物３种溶剂的２１种提取物对７种真菌的室内毒力测定结果表明，茶子（Ｒｉｂｅｓｍａｘｉｍｏｗｉｃｚｉａｎｕｍ）的二氯甲烷提取物杀菌活性最强，对蕃茄早疫病菌菌丝生长有效中浓度（Ｅｃ５０）为７６３μｇ／ｍｌ；对玉米小斑病菌的孢子萌发Ｅｃ５０为１１０７μｇ／ｍｌ。茶子的石油醚提取物和二氯甲烷提取物对盆栽防治黄瓜霜霉病的保护效果分别为７１．３６％和５８．６１％；对盆栽烟草花叶病毒的效果分别为５１．７４％和６４．２３％。上述结果说明，茶子中含有高活性的抑菌。
The bioassay of 21 extracts from 7 saxifragaceae plants against 7 fungus species has been carried out in 1994～1995. The results showed that the methylene chloride extract of Ribes maximowiczianum was the most active one in the tested samples, Ec50 was 763 μg/ml for inhibiting the growth of the hyphae of Alternaria solani , 1 107 μg/ml for inhibiting the germination of the spores of Bipolaris maydis. The results of the pot tests also showed that the protective efficacy of the methylene chloride extract and the petroleum ether extract was 58.61% and 71.36% respectively against the cucumber mildew disease, was 64.23% and 51.74% respectively against the TMV. These results indicated that Ribes maximowiczianum might contain compounds with high fungicidal activity.
出处
《西北农业学报》
CSCD
1996年第2期61-65,共5页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
虎耳草科
天然产物
杀菌活性
Saxifragaceae
Ribes maximowiczianum
Natural products
Fungicidal activity
