摘要
为了明确赤霉素对微型薯休眠及其酚类物质的影响。对赤霉素处理后20 d的微型薯发芽率及其酚类物质进行测定。结果表明:赤霉素能够显著地提高微型薯的发芽率,其中50 mg.L-1GA3处理的微型薯发芽率最高,达98.1%,显著高于对照66.8%;酚类物质的测定结果表明,赤霉素浓度在50 mg.L-1左右时,多酚氧化酶活性最低,酚类化合物的总含量相应最低,为325.0μg.g-1.FW;酚类化合物中对微型薯休眠起主要作用的为儿茶酚和咖啡酸。
In order to master the gibberellin influence of dormant mini-tuber and phenolic compounds.the germination rate and phenolic compounds of mini tubers treated by gibberellin for 20 days were measured. The result showed that gibberellin treatment could significantly increase the germination rate of mini tuber, the optimum concentration of gibherellins was 50 mg·L^-1 ,which could result in the highest germination rate. The study of phenolic compounds showed that the total content of phenolic compounds and polyphenoloxidase activity was the lowest,when the concentrations of gibberellin was about 50 mg·L^-1. Catechol and caffeic acid in the phenolic compounds played a main role in dormant mini tubers.
出处
《黑龙江农业科学》
2009年第3期47-49,共3页
Heilongjiang Agricultural Sciences
关键词
赤霉素
发芽率
酚类物质
多酚氧化酶
gibherellins
gemlination rate
phenolic compounds
polyphenoloxidase
