THE INHERITANCE OF COUMARIN IN SWEET CLOVER
The inheritance of coumarin in white blossom sweet clover was determined from a study of crosses involving plants of the variety Arctic (containing free coumarin). Pioneer (containing bound coumarin), and coumarin-deficient selections. Both a flurometric and a colorimeter test were used to detect th...
| Published in: | Canadian Journal of Botany |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1957
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/b57-048 http://www.nrcresearchpress.com/doi/pdf/10.1139/b57-048 |
| Summary: | The inheritance of coumarin in white blossom sweet clover was determined from a study of crosses involving plants of the variety Arctic (containing free coumarin). Pioneer (containing bound coumarin), and coumarin-deficient selections. Both a flurometric and a colorimeter test were used to detect the presence and type of coumarin.Among high-coumarin plants, variation in the amount of coumarin was due to non-heritable causes or genetic factors not detected in this study. The cross of free-coumarin × bound-coumarin plants established that the bound-coumarin character was inherited as a simple recessive. The gene symbol b is proposed for this character. In the crosses of high-coumarin × coumarin-deficient plants the F 1 progeny were more or less intermediate in coumarin content and the subsequent F 2 established that coumarin production is governed by one partially dominant gene. The symbol Cu is proposed for this gene. The gene B, responsible for the free-coumarin production, expresses itself only in the presence of Cu and is undetectable in a coumarin-deficient plant homozygous for cu. Some atypical unexplained F 2 ratios are reported. |
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