Question:

From IR-8 and Taichung Native-I, which variety of semi- dwarf crop was derived?

Updated On: Aug 2, 2023
  • Sugarcane
  • Rice
  • Wheat
  • Maize
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The Correct Option is B

Solution and Explanation

The correct answer is option (B) : Rice
Taichung Native -1 is a semi-dwarf variety of rice native to Taiwan.
Between 1960 and 2000, there was a significant increase in rice production, rising from 35 million tonnes to 89.5 million tonnes. This remarkable growth was primarily attributed to the development of semi-dwarf varieties of wheat and rice. Notably, semi-dwarf rice strains were derived from two prominent sources: IR-8, created at the International Rice Research Institute (IRRI) in the Philippines, and Taichung Native-1 from Taiwan. These derivative varieties were introduced in 1966. Subsequently, India developed even more productive semi-dwarf varieties, namely Jaya and Ratna.
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Concepts Used:

Strategies For Enhancement in Food Production

Animal Husbandry

The raising and breeding of livestock are known as animal husbandry. Dairy farm management and fisheries are also included under animal husbandry and responsible for the selection of good breeds for better yield, maintaining a well-ventilated house and proper cleanliness and hygiene, and regulating proper disposal of waste.

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Animal Breeding

The practice of raising a group of animals belonging to a common species. Inbreeding and outbreeding are the two types of animal breeding.

  1. Animals of superior male and female breed are made to mate for 4 to 6 generations. According to Mendel's experiment, true-breeding species or pure lines are created by Inbreeding which results in homozygosity.
  2. The breeding involving animals that are not related is known as outbreeding.
  3. Bee-keeping: The rearing of bees for the production of honey and beeswax is known as apiculture. One of the most common species of the honey bee is Apis indica. Beeswax is used to prepare polish, cosmetics, etc.
  4. Fisheries: Cultivation or breeding of aquatic flora and fauna for a commercial purpose is known as aquaculture. Fish and fish products for consumption are known as pisciculture.

Plant Breeding

In order to get rid of nutrient deficiency diseases, crops need to have a specific nutrient value besides disease resistance, pest resistance, and high yield capacity. There are many strategies for enhancing food production through plant breeding.

  1. Somatic Hybrids
  2. Totipotency
  3. Biofortification

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Single-Cell Protein

One of the ways to meet the growing demand of nutrients in plants and animals is a single-cell protein which is biomass that is rich in protein. microbes are produced on an industrial scale to get single-cell protein.