Pure line variety is a

Pure line variety is a Homozygous-Homogenous.
Pure-line selection involves selecting and breeding progeny from superior organisms for some generations until a pure line of organisms with only the desired characteristics has been established.
Genetically similar plants constitute homogenous populations. Examples of homogeneous populations are pure lines, inbred lines, F1 hybrid between two pure lines or inbred lines and progeny of a clone. A homozygous genotype may include two normal alleles or two alleles that have the same variant.