A correlated study of the inheritance of seed size and botanical characters in the flax cross, Redwing X Ottawa 770B
1936
Myers, W.M.
The purpose of this study was to determine the mode of inheritance of petal color, seed color, cilia on the false septa of the bolls, and seed size. White petal color behaved as a simple Mendelian recessive to blue, although a deficiency occurred in the recessive class which was too great to be attributed to chance. It was calculated that 33.8%, of the possible white-flowered segregates failed to reach the flowering stage. Lower viability of the mature seed, or of the plants before flowering, or of both could account for a deficit of 21.9% of the recessive plants. No data were available for determining the cause of the remaining deficit. The production of color in the seed coat was dependent upon the same gene which determined the production of color in the petals or upon a gene closely linked with the flower color gene. The two varieties were differentiated by a single factor pair with intermediate dominance for the production of cilia on the false septa. This gene was inherited independently of the petal color gene. Seed size was dependent upon multiple factors. The number of factors could not be determined, although segregates of both parental types were obtained among 350 F2 plants. Large seed size was partially dominant over small. A correlation coefficient of .684 was obtained between the weight per 50 seeds of the F2 plants and the mean weight of their F3 progeny. No linkage could be demonstrated between major seed size genes and the genes responsible for petal color and cilia on the false septa.
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