离体条件下玉米丝黑穗病菌的形态及三种药剂的抑菌作用  

MORPHOLOGY OF SPHACELOTHECA REILIANA AND INHIBITION OF FUNGICIDES IN VITRO

作　　者：李健强[1] 杨林格 李宝笃[1] 

机构地区：[1]北京农业大学植病系,山东莱阳农学院

出　　处：《西北农业学报》1995年第4期54-58,共5页Acta Agriculturae Boreali-occidentalis Sinica

摘　　要：玉米丝黑穗病菌（Ｓｐｈａｃｅｌｏｔｈｅｃａｒｅｉｌｉａｎａ）冬孢子在ＰＤＡ平板上萌发产生先菌丝，生长缓慢，然后以小孢子（平均６．５μｍ×２．５μｍ）芽殖形成小菌落。在糖溶液中萌发产生先菌丝和有隔担子，最后发育成有分隔和分叉的菌丝，主菌丝直径４．７５μｍ，分枝菌丝直径２．５μｍ。内吸性杀菌剂多菌灵对冬孢子萌发、菌丝生长有抑制作用，加大了细胞膜渗漏；三唑酮对菌落、菌丝生长有抑制作用，加大细胞膜渗漏、抑制麦角甾醇合成；三唑酮与多菌灵等复配的种衣剂１３号具有以上各项特性。The teliospore of Sphacelotheca reiliana emerges promycelium with slowly on PDA media, its small spore(mean range 6.5μm×2.5μm)gemmates and forms small single pustule. Teliospore germinates into promycelium and phragmobasidium in the saccharide solution , developing into septate and branch hyphae, main hyphae diameter 4.75 μm and branch hyphae diameter 2.5μm.Systemic fungicide Car-bendazim inhibits teliospore germination and hyphae growth , its mechanism is aggravation of the cell membrane osmosis; Triadimefon plays an important role in enhancing membrane osmosis and inhibit-ing ergosterol anabolism; Seed Coating Pormulation No.13 consisted of Carbendazim, Triadimefon and other subeidiary chemicals , provides all properties ofabove fungicides.

关 键 词：玉米 丝黑穗病菌 三唑酮 多菌灵 抑菌作用 

分 类 号：S513.034[农业科学—作物学]