. Contributions from the Laboratory of Plant Genetics. Studies of Teratological Phenomena. 105 not absolutely certain that it was tried. Dozens of flowers were bagged and hand pollinated, but no seed ever resulted. One may call it a reversal of dominance, i. e., a change from the intermediate to the completely abnormal condition, but some internal disturbance of a mutative nature must have accompanied this change, in order to account for the sterility. Unfortunately, I knew so little concerning the nature of my material and problems at the time that neither cuttings, nor. Fig. 18. Flowers of p
. Contributions from the Laboratory of Plant Genetics. Studies of Teratological Phenomena. 105 not absolutely certain that it was tried. Dozens of flowers were bagged and hand pollinated, but no seed ever resulted. One may call it a reversal of dominance, i. e., a change from the intermediate to the completely abnormal condition, but some internal disturbance of a mutative nature must have accompanied this change, in order to account for the sterility. Unfortunately, I knew so little concerning the nature of my material and problems at the time that neither cuttings, nor. Fig. 18. Flowers of parents and Y1 hybrid (300—1—5 X 373). Four center flowers belong to hybrid. cytological material were secured. In the light of Digby's (1912) studies on sterility in Primula Iceivensis, a cytological examination of this case might have proved interesting. Flower variability on individual Fi plants (Fig. 18). The first flowers on a plant of the pure fasciated race were usually the most abnormal. Flowers on plants maturing large numbers of seed capsules were likely to be the least abnormal. Environmental disturbances generally affected the variability of these organs in either a plus or minus direction. And in order to compare the range of variability of the fasciated expression in different plants and different. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bussey Institution. Boston : [s. n. ]
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