热带农业科学
熱帶農業科學
열대농업과학
CHINESE JOURNAL OF TROPICAL AGRICULTURE
2015年
6期
37-42
,共6页
吴伟怀%王彩霞%梁艳琼%贺春萍%习金根%郑金龙%李锐%郑肖兰%易克贤
吳偉懷%王綵霞%樑豔瓊%賀春萍%習金根%鄭金龍%李銳%鄭肖蘭%易剋賢
오위부%왕채하%량염경%하춘평%습금근%정금룡%리예%정초란%역극현
甘蔗赤腐病%镰孢炭疽菌%多菌灵%杀菌剂%毒力
甘蔗赤腐病%鐮孢炭疽菌%多菌靈%殺菌劑%毒力
감자적부병%렴포탄저균%다균령%살균제%독력
Colletotrichum falcatum%carbendazim%fungicide%toxicity
由镰孢炭疽菌(Colletotrichum falcatum Went.)引起的甘蔗赤腐病是甘蔗上最具毁灭性的病害之一,在病害流行季节能导致严重的产量损失。为了解甘蔗赤腐病原对杀菌剂的敏感性,本研究测定了11种杀菌剂对该病原菌的毒力。结果表明,11种杀菌剂对甘蔗赤腐病菌的毒力存在明显差异。其中,戊唑醇、丙环唑、咪酰胺、苯醚甲环唑、多菌灵等5种药剂对甘蔗赤腐病菌菌丝体生长具有较好的抑制作用, EC50值介于0.227～0.818μg/mL。其对应EC95值也都小于12μg/mL,介于1.416～11.339μg/mL。就敏感性而言,4株赤腐病菌菌株对多菌灵的b值在11种杀菌剂中均为最大。由此表明,甘蔗赤腐病菌对多菌灵的剂量反应变化比其它几种杀菌剂均要敏感。
由鐮孢炭疽菌(Colletotrichum falcatum Went.)引起的甘蔗赤腐病是甘蔗上最具燬滅性的病害之一,在病害流行季節能導緻嚴重的產量損失。為瞭解甘蔗赤腐病原對殺菌劑的敏感性,本研究測定瞭11種殺菌劑對該病原菌的毒力。結果錶明,11種殺菌劑對甘蔗赤腐病菌的毒力存在明顯差異。其中,戊唑醇、丙環唑、咪酰胺、苯醚甲環唑、多菌靈等5種藥劑對甘蔗赤腐病菌菌絲體生長具有較好的抑製作用, EC50值介于0.227～0.818μg/mL。其對應EC95值也都小于12μg/mL,介于1.416～11.339μg/mL。就敏感性而言,4株赤腐病菌菌株對多菌靈的b值在11種殺菌劑中均為最大。由此錶明,甘蔗赤腐病菌對多菌靈的劑量反應變化比其它幾種殺菌劑均要敏感。
유렴포탄저균(Colletotrichum falcatum Went.)인기적감자적부병시감자상최구훼멸성적병해지일,재병해류행계절능도치엄중적산량손실。위료해감자적부병원대살균제적민감성,본연구측정료11충살균제대해병원균적독력。결과표명,11충살균제대감자적부병균적독력존재명현차이。기중,무서순、병배서、미선알、분미갑배서、다균령등5충약제대감자적부병균균사체생장구유교호적억제작용, EC50치개우0.227～0.818μg/mL。기대응EC95치야도소우12μg/mL,개우1.416～11.339μg/mL。취민감성이언,4주적부병균균주대다균령적b치재11충살균제중균위최대。유차표명,감자적부병균대다균령적제량반응변화비기타궤충살균제균요민감。
Abstracts Red rot caused by Colletotrichum falcatum Went is the most devastating problem of sugarcane (Sacchrum officinarium L.) and causes serious yield losses under favorable environmental conditions. In order to understand the pathogen sensitivity to fungicides, and 11 fungicides were tested in vitro for their effectiveness to inhibit to four isolates of C. falc atum. The results indicated that different fungicides exhibited diverse toxicities, and the most effective in v itro proved to be the fungicides containing tebuconazole, propiconazole, prochloraz, difenoconazole and carbendazim. Their EC50 and EC95 values for inhibition of the isolates ranged from 0.227μg/mL to 0.818 μg/mL and 1.416 μg/mL to 11.339 μg/mL, respectively. The in v itro sensitivity of C. falc atum to 11 fungicides was also examined. The results showed that the b values from carbendazim were the highest among the 11 fungicides with respect to different isolates. These results indicate that the sugarcane red rot pathogen is more sensitive to carbendazim than other fungicides tested.
