1
Given below are two statements
Statement (I) : Genetic gains obtained from Seed Production Area is maximum
Statement (II) : Seed Production Areas are subjected to progeny testing
In light of the above statements, choose the most appropriate answer from the options given below.
EXPLANATION
Forest Genetics, Plus Tree Selection, Provena
- Statement (I) is Incorrect: In forest tree breeding, genetic gain ($\Delta G$) obtained from Seed Production Areas (SPAs, phenotypically thinned natural stands) is modest (typically $3-8\%$), whereas Seed Orchards (Clonal Seed Orchards, CSOs, or Seedling Seed Orchards, SSOs) established from rigorously progeny-tested plus trees yield substantially higher genetic gain ($15-30\%$).
- Statement (II) is Incorrect: Second-generation seed orchards capture cumulative additive genetic variance through recurrent selection, achieving significantly higher genetic gains than first-generation seed orchards.
- Conclusion: Both Statement (I) and Statement (II) are incorrect (Option 2).
Correct option: (2) Both Statement (I) and Statement (Il) are incorrect
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