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Archive for April, 2011

Polyploidy

Polyploid genotypes have somatic cells which possess multiples of the basic chromosome sets (genome). 70 % of grass species and 23 % of the legume species are polyploid. The main causes of polyploidie are mutation and recombination. Further, environmental conditions favor the occurrence of natural polyploidie. The colder the environment and the less light the [...]

April 30th, 2011
Topic: Crop Science, Plant breeding Tags: None

Breeding scheme for potato

Vegetatively propagated crops: rape, strawberry, potato Breeding of clone cultivars, with example on potato. Potato is a vegetatively propagating plant. Each tuber is identical with the mother plant. Due to vegetative propagation genetic variation is usually caused only by mutations. Further, clones are highly heterozygous and exploit heterosis. However, progenies produced by selfing of clones [...]

April 26th, 2011
Topic: Crop Science, Plant breeding Tags: None