不同浓度及药剂处理对萝卜陈种子发芽及田间成苗的影响

以4a生的“北京满堂红”萝卜种子为试材,用不同浓度聚乙二醇、青霉素、甲基托布津及双氧水进行浸种处理,以清水为对照,进行室内发芽和田间种植试验.结果表明:以聚乙二醇200 mg/L、青霉素200 mg/L、甲基托布津1.5g/L、双氧水浸泡10 min处理对种子,其发芽率、幼苗根系活力、叶片叶绿素含量和田间成苗效果最好,与CK差异达到显著水平.说明一定浓度和时间的药剂浸种处理促进了萝卜陈种子新陈代谢系统的修复和恢复,充分利用胚中贮存的营养物质,使幼苗达到与正常种子生长的指标.

Impacton Germination and Field Emergence of Aged Radish Seed from Various Concentration of Chemical Treatment

Four years stored radish seed,Beijing mantanghong,was selected as material in this experiment.The material was treated with PEG,penicillin,thiophanate-methyl and H2O2in different concentration and water as control for germination experiment in both room and field tests.The results showed that 10 min treatment with mixture of 200 mg/L PEG,200 mg/L penicillin,1.5 g/L thiophanate-methyl and H2O2had the best effect on seeds germination,roots activity,content of chlorophyll and field seedling rate,which was significantly different from control.Thus treatment with appropriate concentration of PEG,penicillin,thiophanate-methyl and H2O2can remedy and promote seeds’ metabolic system to make full use of nutrient substance stored in fetus and enable seedling to reach the same standard as normal seeds.