Abstract
SummaryThe use of doubled haploid (DH) lines offers an alternative approach to the genetic analysis of quantitative characters which has certain advantages over conventional procedures. The present paper discusses these advantages and presents examples of analyses using DH lines that are useful to the plant breeder.First, the use of DH lines to partition the genetical variation for a quantitative character is discussed. Then, secondly, a method for detecting linkage between genes controlling a quantitative character is presented. Finally, methods for estimating the number of segregating genes in a cross are given. The use of these methods is illustrated with data from experiments containing doubled haploid lines of barley developed using the Hordeum bulbosum system.
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