Introduction
Homogenous population:
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Genetically similar plant constitutes homogenous populations. Eg: Pure lines, inbred lines, F1between pure lines, progeny of a clone. Pure lines and inbredlines have narrow adaptation.
Heterogeneous population:
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Genetically dissimilar plants constitute heterogeneous population E.g: Land races, mass selectedpopulation,synthetics,composites, multiline. Synthetics, Composites, multiline these have wide adaptability stableperformance under different environments.
Homozygous populations:
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Individuals with like alleles at the corresponding loci are known as homozygous. Such individuals do not segregate on selfing. E.g.: Pure lines, inbred lines and mass selected population in self pollinated plants. Multiline are homozygous but heterogeneous
Heterozygous population:
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Individuals with unlike alleles the corresponding loci are heterozygous. Such individuals segregate into various types on selfing. Eg.F1, composites, Synthetics. Such populations have greater buffering capacity to environmental fluctuation
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Homozygous
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Heterozygous
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Homogenous
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Genetically similar and non segregating population
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Genetically similar but segregating on selfing F1, hybrids between inbred lines and progeny of a clone
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Heterogenous
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Genetically dissimilar but non segregating population Multiline and mass selected varieties of self pollinated crops
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Genetically dissimilar but segregating population Eg. composites and synthetics
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Last modified: Saturday, 23 June 2012, 3:58 AM