23
The concept of Pureline was proposed by. in the year........ on the basis of his studies with beans (Phaseolus
vulgaris) variety called
EXPLANATION
Crop Domestication, Diversity Centres & Plant
- Johannsen's Pureline Theory (1903):
- Formulated by Danish botanist and geneticist Wilhelm Johannsen in 1903.
- Conducted selection experiments on seed weight in the self-pollinated common bean (Phaseolus vulgaris) cultivar 'Princess'.
- Demonstrated that a pure line is the progeny of a single self-fertilized homozygous individual, within which variation is entirely environmental and selection is ineffective. (Correct answer: Option 3)
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