Plant pathogenic bacteria surviving in seeds and planting materials.

Sl.No Disease Bacteria a. Seed 1. Bacterial canker of tomato Clavibacter michiganensis subsp. michiganensis 2. Goss’s bacterial wilt and blight of maize Clavibacter michiganensis  subsp. nebraskensis 3. Bacterial wilt of bean Curtobacterium flaccumfaciens pv. flaccumfaciens 4. Bacterial brown stripe of rice Pseudomonas avenae 5. Bacterial grain rot of rice Pseudomonas glumae 6. Bacterial blight of […]

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Introduction of Fungi In Plant Pathology

Introduction of Fungi In Plant Pathology Fungi are filamentous, multi -cellular organisms, having organized nucleus with nuclear membrane, always lacking of chlorophyll,but presence of cell wall in true fungi and multiplication by production of asexual or sexual spores of vegetative cells. Vegetative structure of fungi: • In the true fungi true cell wall is present […]

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Role of Mutation breeding in plant

—Introduction —Types of mutation —Mutagens —Mutation Breeding —Breeding procedures —Achievements of mutation breeding —Advantages of mutation —Limitations of mutation breeding —Conclusion                               INTRODUCTION —Mutation refers to sudden heritable change in the phenotype of an individual. —Is the change in genetic material […]

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Plant Breeding-50 Selective Key Point jrf exam

         Plant Breeding-2 Selective Key Point         (for JRF/SRF/IARI Ph.D. & other competitive exams.) 1. Monogenic traits show which type of variation : Discontinuous 2. Purpose of Bagging is to prevent  : Cross-pollination 3. Purpose of Emasculation is to prevent  : Self-pollination 4. Among Pollen grain and female gamete […]

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Top 10 Question For Agriculture Entrance Exam on Rice Plant Disease

Top 10 Question For Agriculture Entrance Exam on Rice Plant Disease Q.1. The causal organism of brown spot of rice Ans.Helminthosporium oryzae Q.2. The brown spot of rice is Ans.Externally seed borne disease Q.3. Poor man’s disease of rice Ans.Bacterial leaf blight (Xanthomonas oryzae) Q.4. The most destructive phase of the bacterial blight of rice […]

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