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Inzucht

  • Gunnar Eilert Hiorth

Zusammenfassung

Schon Darwin (1877) führte umfangreiche Untersuchungen über die Wirkung der Inzucht bei zahlreichen Pflanzenarten aus. Seit Beginn dieses Jahrhunderts ist das Problem der Inzucht in erster Linie von amerikanischen Maisforschern wie Shull, East und Jones analysiert worden. Man unterscheidet zwischen zwei Typen von Inzuchteffekten, die schon früher (Kap. 9, III) besprochene Abspaltung von rezessiven Defekten, die in der ersten Generation der Selbstung ihren größten Umfang hat, und eine allgemeine Inzuchtdepression, die kontinuierlich von Generation zu Generation fortschreitet, bis bei Annäherung an den Zustand der absoluten Homozygotie (Sho) ein sogenanntes Inzuchtminimum erreicht wird, wonach anscheinend keine weiteren Änderungen stattfinden.

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© Springer-Verlag OHG / Berlin · Göttingen · Heidelberg 1963

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  • Gunnar Eilert Hiorth

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