, Volume 12, Issue 2, pp 147-160

Sources and distribution of the complementary genes for hybrid necrosis in wheat

  • J. G. Th. HermsenAffiliated withPlant Breeding Institute

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Hybrid necrosis in wheat is based on 2 complementary genes Ne 1 and Ne 2. Unitl now among the 509 varieties and selections tested 89 Ne 1-and 207 Ne 2-carriers were found. By tracing the descendence of these carriers several sources of the necrosis genes (mostly land varieties) could be detected. At the same time it was demonstrated that notably the frequent use of certain carrier-varieties as parents in crosses has promoted the distribution of the necrosis genes.