Question:

Identify suitable example for Interspecific hybrids.

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Interspecific hybrids are written with the same genus name, followed by the two distinct species epithets separated by an "\(\times\)" sign (e.g., Eucalyptus grandis \(\times\) E. urophylla).
  • Teak Teli variety
  • Nilambur teak clone x Chandrapur teak clone
  • Jatropha curcas x Ricinus communis
  • Eucalyptus grandis x E. urophylla
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The Correct Option is D

Solution and Explanation



Step 1: Understanding the Concept:

An interspecific hybrid is an offspring resulting from the cross-breeding of two different species within the same genus.

Step 2: Detailed Explanation:

- Eucalyptus grandis and Eucalyptus urophylla are distinct species within the genus Eucalyptus.
- Their hybrid, Eucalyptus grandis \(\times\) E. urophylla, is a widely cultivated commercial hybrid in forestry. It exhibits strong hybrid vigor (heterosis) and combines the fast growth of E. grandis with the wood density and disease resistance of E. urophylla.
- Teak Teli is a naturally occurring variant within the single species Tectona grandis.
- The Nilambur \(\times\) Chandrapur cross is an intraspecific cross within Tectona grandis.
- Jatropha curcas and Ricinus communis belong to different genera, representing an intergeneric combination, which is generally incompatible.

Step 3: Final Answer:

The correct example of an interspecific hybrid is Eucalyptus grandis \(\times\) E. urophylla.
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