摘要
为了增强切花百合在生长繁殖过程中的抗病性,本研究利用壳聚糖(oligosaccharide,OS)50mg.L-1、、100mg.L-1、300mg.L-1、500mg.L-1,浸泡切花百合种球根部与鳞片,通过田间种植和鳞片包埋两个试验,测定其生长指标,POD、PAL、PPO等防御酶活性以及病情指数。结果表明,各种浓度的壳聚糖处理百合后,植株叶片防御酶活性增加,病情降低,株高、茎粗等生长性状得到改善,鳞片发子球率增加,病害减少。其中经OS300mg.L-1处理的百合在各个生理生化指标以及抗病性上明显高于对照,而且其他浓度均未对切花百合产生药害,说明壳聚糖是一种对切花百合效果较好的诱导剂。
In order to enhance the disease resistance of cut flower lily,roots and scales of lily bulb were soaked in oligosaccharide（OS） with 50 mg·L^-1,100 mg·L^-1,300 mg·L^-1,500 mg·L^-1 before being planted or embedded.Growth indexes,the activities of defensive enzyme such as POD,PAL,PPO and disease index were determined by two separate trials,those were field test and embedded scales test.The result showed that all OS treatments can increase activities of defensive enzyme and budding rate of scales,reduce disease,and then improve growth properties including the height and the thickness of stems.Compared to control （CK）,the treatment with OS 300 mg·L^-1 can significantly promote plant physiological and biochemical indexes and disease resistance.Further,all treatments have no damage to cut flower lily,so OS could be suggested to be used for defending cut flower lily disease as efficient revulsant.
出处
《中国沙漠》
CSCD
北大核心
2010年第2期383-387,共5页
Journal of Desert Research
基金
科技部农业科技成果转化资金项目(2007GB24910484)
科技支撑项目(2006BAD26B0201)
中国科学院知识创新工程重要方向项目(KSCX2-YW-N-44-07)
甘肃省农业生物技术研究与应用开发项目(GNSW-2008-01)共同资助
关键词
壳聚糖
切花百合
抗病性
生理生化指标
oligosaccharide（OS）
cut flower lily
disease resistance
physiological and biochemical indexes
