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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Which of the following transposable elements are NOT found in plants? (IFFCO 2022)

    Question: Which of the following transposable elements are NOT found in plants? (IFFCO 2022)

    Options:

    Sigatoka
    Fusarium wilt
    Bunchy top
    Panama wilt

    ✅Explanation:
    -Prevalence: Sigatoka is widespread across banana-growing regions in India, affecting a large proportion of plantations.
    -Impact on Yield: Severe Sigatoka infections can cause significant yield losses by reducing the photosynthetic capacity of the leaves, leading to smaller and fewer fruits.
    -Economic Losses: The disease necessitates frequent fungicide applications, increasing production costs for farmers and potentially impacting the environment.
    -Favorable Conditions: The warm and humid climate in many parts of India favors the development and spread of Sigatoka.

    🔑Key Points:
    -Sigatoka leaf spot is a disease of Banana.
    -Sigatoka leaf spot: Causal organism: Fungus
    -Scientific Name: Cercospora musicola 
    -Symptoms: Tiny chlorotic spots on the bottom side of the 3rd-4thleaf of the plant. 
    -Over some period these tiny spots enlarge and become large spots.

    🛑Additional Information:
    -Banana: Botanical Name: Musa paradisica
    -Family: Musaceae
    -Chromosome Number: 2n = 22, 33, 44
    -Origin: Southeast Asia

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