不同LED光质对丝瓜枯萎病菌及枯萎病发生的影响  

Effects of Light Quality on Fusarium Oxysporum and Fusarium Wilt Disease of Loofah(Luffa Acutangula)

作　　者：吴波 胡广齐 王聪 刘厚诚[1] 王锡巧 匡粤 李晓冰 龙勇斌 张荣[1] 冯淑杰[1] WU Bo;HU Guangqi;WANG Cong;LIU Houcheng;WANG Xiqiao;KUANG Yue;Li Xiaobing;Long Xiaobin;Zhang Rong;Feng Shujie(College of Horticulure,South China Agricultural University,Guangzhou 510642,China;Foshan Onmillion Nani Materials Co.Ltd,Foshan 528143,China)

机构地区：[1]华南农业大学园艺学院,广东广州510642 [2]佛山安亿纳米材料有限公司,广东佛山528143

出　　处：《照明工程学报》2017年第6期87-91,共5页China Illuminating Engineering Journal

基　　金：国家级大学生创新创业训练计划项目(201510564111)

摘　　要：为了探讨光质调控病害发生的机制,我们测定了340~450 nm波段内的11种光质对丝瓜枯萎病菌(Fusarium oxysporum(Schl.)f.sp.luffae)以及枯萎病发生的影响。结果显示,同白光处理相比,370 nm和400 nm处理能显著抑制丝瓜枯萎菌菌落的生长,340 nm、395 nm、410 nm、440 nm、450 nm处理对菌落生长有促进作用,但促进效果不显著;所有的供试处理对枯萎病菌的产孢都具有一定的促进作用,其中370 nm处理促进产孢的效果最明显;375 nm、425 nm和440 nm处理对供试病菌的分生孢子萌发表现出明显的促进作用,395 nm则表现出一定的抑制效果。经过光照预处理72 h,370 nm、380 nm和425 nm处理显著延缓了丝瓜枯萎病害的发展,而375 nm、440 nm、450 nm则对病害的发展有一定的促进作用。To explore the mechanism of light quality regulation on disease,effects of11kinds of light quality(range from340~450nm)on Fusarium oxysporum(Schl.)f.sp.luffae and Fusarium wilt were tested.Compared with the treatment of white light,mycelia growth of F.oxysporum was inhibited in treatments of370nm and400nm,while mycelia growth was slightly promoted in treatment of340nm,395nm,410nm,440nm and450nm.Sporulation of F.oxysporum was promoted in all light treatments,and that was the highest under370nm light treatment.There were significant effects of promoting spore germination in treatments of375nm,425nm and440nm,while certain inhibitory effect was found in395nm treatment.After the light pretreatment of72h,the development of wilt disease slowed in treatments of370nm,380nm and425nm,however,certain role in promoting the development of disease was found in treatments of375nm,440nm and450nm.

关 键 词：光质 丝瓜 尖孢镰刀菌 病情指数 LED 

分 类 号：S436.429[农业科学—农业昆虫与害虫防治] TM923.34[农业科学—植物保护]