Online Courses (English)
This just in:

State PCS

Daily Updates

Science & Technology

Whiteflies Resistant Variety of Cotton

  • 21 Mar 2020
  • 3 min read

Why in News

Recently, the National Botanical Research Institute (NBRI), Lucknow has developed a whiteflies-resistant variety of cotton.

  • Whiteflies are one of the top ten devastating pests in the world that damage more than 2000 plant species and also function as vectors for some 200-plant viruses.
  • Cotton is one of the worst-hit crops by whiteflies. As two-third of the cotton crop was destroyed by the whiteflies in Punjab in 2015.

Key Points

  • Need for Development :
    • Even though Bt cotton is also genetically-modified cotton and present in the market for farmers usage, it is resistant to two pests only and not resistant to whiteflies.
  • Constituents :
    • The leaf extract of an edible fern Tectaria Macrodonta causes toxicity to the whitefly.
    • It works against whiteflies but is safe for application on the crop plants and provides protection from them.
  • Process:
    • When whiteflies feed on doses of insecticidal protein of Tectaria Macrodonta, it interferes with the life cycle of insects.
    • The whiteflies suffer from very poor egg-laying, abnormal eggs, nymph and larval development, and the poor overall growth of the fly.
  • Target and Non-target Insects:
    • The Tectaria Macrodonta is found to be in-effective on non-target insects.
    • Thus, it clearly shows that the protein is specifically toxic to whitefly and does not cause any harmful effect on other beneficial insects like butterflies and honeybees.

Tectaria Macrodonta

  • Tectaria Macrodonta is native to tropical areas of Asia and commonly found in Western Ghats of India.
  • The fern is known to be used in salads in Nepal and as a concoction for gastric disorders in many regions of Asia

National Botanical Research Institute

  • The CSIR-National Botanical Research Institute (NBRI) – is amongst one of the constituent research institutes of the Council of Scientific and Industrial Research (CSIR), New Delhi.
  • It undertakes basic and applied research on various aspects of plant science, including documentation, systematics, conservation, prospection, and genetic improvement.
  • It emphasises on under-exploited, non-traditional, and wild plant genetic resources of the country for sustainable development and human welfare.

Source:PIB

SMS Alerts
 

Please login or register to view note list

close

Please login or register to list article as bookmarked

close
 

Please login or register to make your note

close

Please login or register to list article as progressed

close

Please login or register to list article as bookmarked

close