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      • HARVEST
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      The effect of interspecific hybridization on certain genetic ratios in sweet clover

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      Baenziger_Hans_1957_sec.pdf (3.299Mb)
      Date
      1957
      Author
      Baenziger, Hans
      Type
      Thesis
      Degree Level
      Masters
      Metadata
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      Abstract
      During recent years sweet clover has become more and more recognized as an important agricultural crop. Consequently, considerable effort has been placed in the improvement of its agronomic characters. The breeding of improved varieties made more intensive studies of the crop necessary. Genetic studies have been conducted on many characters. In a number of studies, inter- and intraspecific fertility has been determined and techniques of selection have been developed. In many of the genetic studies simple mendelian segregation occured. At the Dominion Forage Crops Laboratory at Saskatoon, where particular emphasis is placed on the development of coumarin-deficient strains of sweet clover, a study of the mode of inheritance of coumarin content was undertaken in 1954. Many of the F2 progenies segregated 3:1 for high vs. low coumarin content. The same segregation occured with respect to free vs. bound coumarin. In some F2 progenies, however, unexpected ratios of approximately 8 high-coumarin to 1 coumarin-deficient plants occured. Some type of complementary inheritance was suggested as a possible explanation for these ratios. The present study was undertaken to determine the cause of the unexplained segregation in several F2 populations. A new method of testing sweet clover seeds for coumarin was evaluated with regard to its applicability in breeding work.
      Degree
      Master of Science (M.Sc.)
      Department
      Field Husbandry
      Program
      Field Husbandry
      Supervisor
      Greenshields, J. E. R.
      Committee
      Bolton, J. L.
      Copyright Date
      1957
      URI
      http://hdl.handle.net/10388/etd-08172010-090759
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      • Graduate Theses and Dissertations
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