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Arka Shubha: New Marigold Variety

  • 10 Feb 2021
  • 3 min read

Why in News

The Indian Institute of Horticultural Research (IIHR) has developed a new marigold variety named Arka Shubha.

Key Points

  • About:
    • High Carotene Content: Arka Shubha has carotene content of around 2.8% (for all marigolds, it's maximum upto 1.4%) which is the highest among all plant sources.
    • Used after Spoiled: This new variety of marigold can be used for extraction of crude carotene even if spoiled after full bloom, unlike that of other varieties.
  • Significance:
    • Ornamental & Carotene Extraction: This new variety not only has ornamental purpose but is also a good source of crude carotene.
    • Poultry Feed: Its petals could be used as poultry feed to get quality yolk.
    • Reduce Import Dependency: India imports most of its carotene from other countries, including China. This development can significantly reduce import dependency. Therefore, both cultivation area and investment on carotene extraction should be increased.


  • Carotenes are carotenoid pigments that are oxygen-free. Mostly they are unsaturated hydrocarbons that contain only carbon and hydrogen.
  • Their color varies from yellow to orange to red. The color is attributed to the chain of alternating single and double bonds.
    • Carotene is responsible for the orange colour of carrots.
  • α-carotene, β-carotene, and lycopene are examples of carotenes.
  • Carotene is used in the pharmaceutical sector, there is always a high demand for it.

Indian Institute of Horticultural Research

  • Indian Institute of Horticultural Research (Indian Council of Agricultural Research) is an autonomous organization under the Department of Agricultural Research and Education, Ministry of Agriculture & Farmers Welfare.
  • IIHR has a main research station at Bengaluru and regional experiment stations at Bhubaneswar in Orissa and Chettalli in Karnataka with two Krishi Vigyan Kendras.
  • The institute's main research agenda was to increase the yields of horticultural crop varieties by developing high yielding varieties in fruits, vegetables, ornamentals and medicinal products.

Source :TH

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