Significance of allelic diversity and 2n gametes for approaching maximum heterozygosity in 4 x ppotatoes

Autor: Werner, Joanna E., Peloquin, Stanley J.
Zdroj: Euphytica; October 1991, Vol. 58 Issue: 1 p21-29, 9p
Abstrakt: High level of heterozygosity is directly related to heterosis for yield in polysomic polyploids. Modern breeding schemes in potato (2n=4×=48) involve utilization of wild or cultivated 2 x relatives that provide a source of allelic diversity, and 2n gametes that transfer diversity to the 4 x level. Different levels of allelic diversity and different modes of 2 n egg formation were considered theoretically to determine their significance for the recovery of heterotic 4 x progeny from 2××4× crosses. The support from the experimental data is provided.
Databáze: Supplemental Index