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Heterosis

Term (also heterosis = dissimilarity, heteros = the other) for the pronounced performance of hybrids (crossbreeds) in plant and animal breeding, which can generally have a positive effect through positive characteristics.

Breeding of grape varieties

This plays an important role in the breeding of new grape varieties. Strongly heterozygous (heterozygous) organisms (including humans) have more different hereditary traits than pure-bred ones. They are often more resistant to diseases and are better able to adapt to changing environmental conditions. The grapevine is also heterozygous, which is why crossbreeding between different varieties is generally advantageous. On the other hand, negative inbreeding effects occur with self-pollination (self-fertilisation). However, this does not matter, as propagation is not generative (sexual), but vegetative.

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Prof. Dr. Walter Kutscher
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The world's largest Lexicon of wine terms.

26,410 Keywords · 47,049 Synonyms · 5,323 Translations · 31,744 Pronunciations · 205,895 Cross-references
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