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首页> 外文期刊>Revista Brasileira de Fruticultura >REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola
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REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola

机译：木瓜基因型对靶点的反应以及植物提取物和芽孢杆菌的活性。在Corynespora cassiicola上

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PAZ, Dannielle Silva Da et al. REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola. Rev. Bras. Frutic. [online]. 2018, vol.40, n.1, e-927. ?Epub?Feb?08, 2018. ISSN 0100-2945.? http://dx.doi.org/10.1590/0100-29452018927. Papaya target-spot, caused by fungus Corynespora cassiicola presents a wide geographic distribution, causing leaf spots in several hosts. The aim of this research was to evaluate the behavior of papaya varieties and/or selections to the natural occurrence of target spot, and test the fungi toxic effect of neem, citronella and eucalyptus extracts, and fungi static effects of Bacillus isolates on the fungus C. cassiicola in vitro. To evaluate the natural occurrence of the disease in field, symptoms on leaves of 11 papaya varieties and/or selections have been assessed. The pathogenicity of isolates was verified by inoculation of plants in greenhouse. Neem, citronella and eucalyptus extracts were prepared at concentrations of 10, 15 and 20% and poured into Petri dishes containing C. cassiicola mycelium discs. For , Bacillusnine isolates were used, and the antagonistic potential was evaluated by the pairing of pathogen and isolate colonies by the circle method. Papaya varieties and/or selections presented all leaves with injury, and Canaan Sunrise Solo and Canaan Golden selections showed the greatest number of injuries per leaf, showing that papaya varieties and/or selections respond differently to the phytopathogen. All plant extracts tested showed inhibitory effect on the mycelial growth of C. cassiicola in vitro. Bacillus isolates showed an antagonistic potential on the mycelial growth of the fungus, with B. methylotrophicus (Iso 31 and Iso 41) being the most promising as a biological control agent. The results indicate that forms of alternative control of diseases are promising in the management of papaya target-spot.
机译：PAZ，Dannielle Silva Da等。木瓜基因型对靶点的反应以及植物提取物和芽孢杆菌的活性。在Corynespora cassiicola上。胸罩牧师果然[线上]。 2018，Vol.40，n.1，e-927。 《 Epub》，2018年2月8日.ISSN 0100-2945。？ http://dx.doi.org/10.1590/0100-29452018927。木瓜Corynespora cassiicola引起的木瓜靶点具有广泛的地理分布，在数个宿主中引起叶斑。这项研究的目的是评估木瓜品种和/或选择对自然出现的靶点的行为，并测试印em，香茅和桉树提取物的真菌毒性作用，以及芽孢杆菌分离物对真菌C的静态作用。卡西氏菌体外。为了评估田间疾病的自然发生率，已经评估了11种木瓜品种和/或选择品种叶片的症状。通过在温室中接种植物来验证分离物的致病性。印，香茅和桉树提取物的制备浓度为10％，15％和20％，倒入含有C. cassiicola菌丝盘的培养皿中。对于，使用芽孢杆菌分离株，并通过病原菌和分离菌落的配对通过圆法评估拮抗潜力。木瓜变种和/或选择对所有叶片均造成伤害，而Canaan Sunrise Solo和Canaan Golden选择显示每片叶子受伤最多，表明木瓜变种和/或选择对植物病原体的反应不同。所有测试的植物提取物均显示出对卡西梭菌菌丝体生长的抑制作用。分离的芽孢杆菌对真菌的菌丝体生长具有拮抗作用，而甲基营养芽孢杆菌（Iso 31和Iso 41）是最有前途的生物防治剂。结果表明，疾病的替代控制形式在木瓜靶点的管理中很有希望。

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