tailieunhanh - First report of leaf spot disease on Yucca plant caused by Alternaria alternata from India

A leaf spot disease of Yucca plants is prevalent in India. They are native to the hot and dry parts of America and the Caribbean. Yucca is similar to agave but often forms trunks and typically has more numerous, thinner, leathery leaves with a smaller terminal spine. Yucca leaves range in color from deep green to pale blue, and leaves may be striped in shades of white, cream, yellow, or chartreuse. They are also used in pharmaceutical industries for medicinal properties When in flower yucca produces large, upright panicles (flower clusters) of white, bell-shaped flowers. Symptomatic can be seen on the upper and lower side of leaves like to be small and circular spots with concentric rings at first which later became irregular lesions. These circular spots were dark black coloured with necrotic region. Purified fungal suspension (1 x105 cfu/ml) was sprayed on healthy plants for the confirmation of pathogencity test. Koch’s Postulates were established. This fungus was identified as Alternaria alternata and is the first report of ‘leaf spot disease’ on this host from India. | First report of leaf spot disease on Yucca plant caused by Alternaria alternata from India

• Sinh học
• Leaf spot
• Foliar disease
• Yucca plant
• Alternaria alternata
• Bell shaped flowers
• Economic management of alternaria leaf spot
• Alternaria leaf spot of cauliflower
• Phytotoxicity of alternaria leaf spot
• Bioefficacy of alternaria leaf spot
• Early leaf spot
• Late leaf spot
• Screening of groundnut genotypes
• Early and late leaf spot disease
• Late leaf spot disease
• Cercospora leaf spot
• Corynespora leaf spot
• Resistance against corynespora leaf spot
• Blackgram genotype
• Corynespora cassiicola
• Solanum lycopersicum
• Status of septoria leaf spot
• Septoria leaf spot of tomato
• Septoria leaf spot has procured
• Leaf spot disease
• Plant extracts
• Mulberry (Morus spp )
• Leaf spot disease of mulberry
• Management of leaf spot disease
• Algal leaf spot
• Cephaleuros species
• New record on algal leaf spot of quince
• Algal leaf spot of quince
• Wavy or feathered
• Chilli (Capsicum annuum L )
• Corynespora cassiicola on chilli
• First report of corynespora leaf spot
• Fruit spot
• Plant diseases
• Fruit spot diseases
• Tomato crop
• Alternaria macrospora
• Cotton leaf spot
• In vitro evaluation
• Alternaria macrospora causing leaf
• Leaf spot in cotton
• Advance backcross lines
• Late leaf spots
• Advanced breeding lines of groundnut
• Late leaf spot diseases
• Field evaluation of early
• Detached leaf assay
• Latent period
• Per cent leaf area damaged
• Host plant resistance
• Sigatoka leaf spot complex
• ITS – rDNA
• Mycosphaerella emusae
• Sigatoka leaf spot disease of banana
• Molecular characterization
• Trichoderma spp
• Antagonistic capabilities
• Bt cotton
• Systemic fungicides against
• Leaf spot in Bt cotton
• Thiophanate methyl
• Brown leaf spot
• Paramyrothecium roridum
• Plant pathogen
• Phylogenetic analysis
• Brown leaf spot of mulberry
• Helminthosporium Vignicola
• Target leaf spot
• Target leaf spot disease
• Vigna Unguiculata L
• Foliar fungal pathogen experienced
• Disease severity
• Cauvery command area
• Brown leaf spot of paddy
• Rice during kharif 2015
• Black pepper
• Coffee leaf spot pathogen Myrothecium Roridum
• Myrothecium Roridum on black pepper
• Coffee plantations
• Pearl millet
• Fungicides Drechslera setariae
• Field conditions
• Fungicides against leaf spot disease
• Alternaria brassicicola
• In vitro
• Poisoned food technique
• In vitro efficacy
• Alternaria leaf spot of cabbage
• Leaf spot of cabbage
• Pigeon pea
• Cercospora leaf spot of pigeon pea
• Biocontrol agents
• Efficacy of fungicides
• SSR markers
• Groundnut (Arachis hypogaea L )
• SSR markers to late leaf spot
• Rust resistance in groundnut
• Curvularia lunata
• Light wavelength
• Curvularia leaf spot of maize
• Growth of Curvularia lunata
• Maize caused by Curvularia lunata
• Trichoderma viride against leaf spot
• Leaf spot of maize caused
• Green gram
• Bacterial leaf spot
• Per cent disease index
• Severity of bacterial leaf spot
• Green gram in different tehsils