B. I. Hayman

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I . Introduction HE investigation of the properties of groups of homozygous lines by means T of diallel crosses as proposed by HULL (1945) has subsequently been discussed in growing detail in a series of papers by JINKS and HAYMAN (1953 and later). With certain assumptions, the genetic variation present can be described in terms of the biometrical concepts(More)
The difficulty of specifying additive and dominance variation in the presence of epistasis is described. This difficulty can be overcome when the epistasis is at a relatively low level of intensity but when epistasis is the major source of genetic variation no measure of additive or dominance variation is possible. Heterosis in a cross between two inbred(More)
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