CAJ | 학술논문

炭疽病是辣椒上的重要病害，影响了辣椒的产量与品质。生产中，在“辛香15号”辣椒上发现了1种新炭疽病，仅在辣椒果实上发生，典型病斑为椭圆形，周围水渍状，中间呈黑色同心轮纹，无小黑点出现，对常用杀菌剂不敏感；保湿后镜检发现，该病菌产生分生孢子盘，无刚毛，分生孢子近长椭圆形，无色，单孢，大小为12.5μm×3.75μm，有油球，一端稍尖；进一步分离培养病原菌并通过柯赫氏法则验证后，初步将其鉴定为尖孢炭疽菌（Collectotrichum acutatum Simmonds）。为了获得对该病效果好的化学药剂，采用牛津杯法测定了8种化学药剂对病菌的抑制效果，结果表明：250 g/L丙环唑乳油3000倍液抑制效果最好且药效持续时间长，可作为该病的候选药剂。本试验结果可为防治尖孢炭疽菌引起的辣椒炭疽病提供理论依据和用药参考。
탄저병시랄초상적중요병해，영향료랄초적산량여품질。생산중，재“신향15호”랄초상발현료1충신탄저병，부재랄초과실상발생，전형병반위타원형，주위수지상，중간정흑색동심륜문，무소흑점출현，대상용살균제불민감；보습후경검발현，해병균산생분생포자반，무강모，분생포자근장타원형，무색，단포，대소위12.5μm×3.75μm，유유구，일단초첨；진일보분리배양병원균병통과가혁씨법칙험증후，초보장기감정위첨포탄저균（Collectotrichum acutatum Simmonds）。위료획득대해병효과호적화학약제，채용우진배법측정료8충화학약제대병균적억제효과，결과표명：250 g/L병배서유유3000배액억제효과최호차약효지속시간장，가작위해병적후선약제。본시험결과가위방치첨포탄저균인기적랄초탄저병제공이론의거화용약삼고。
Anthracnose was an important disease of peppers, influencing their yield and quality. A new anthracnose only appearing on the pepper fruits was found in the production of pepper cultivars“XinXiang 15”. Its typical lesion was oval in shape with tawny powder at the center,and with outer water soaked zones, but without concentric black dots. The new anthracnose was difficult to control by using the general fungicides. It was found that no seta was observed on conidia. Conidia were single-celled, 12.5 μm×3.75 μm in size, with a sub-acute end and oil droplets in each cell after keeping the humidity and detecting the mildew by microscope. The pathogen was identified as Collectotrichum acutatum Simmonds after isolating and culturing and validating by Koch’s Rule. In order to obtain the better fungicides to control the new anthracnose disease, inhibition effects of 8 fungicides against the fungal from pepper cultivars“XinXiang 15”were detected by Oxford-Cup in vitro. The results showed that 250 g/L propiconazole EC diluted 3 000 times had obvious inhibition effects and long duration time, which could be regarded as a candidate fungicide to control the new anthracnose caused by Collectotrichum acutatum on peppers. This research provided theoretic evidences and fungicide references for the new anthracnose control.