. Contributions from the Laboratory of Plant Genetics. CROSSES BETWEEN NICOTIAN A LANGSDORFFII AND N. ALATA 327 Table 4 Statistical constants of the corolla length in the five F2 families reported in table 3 Number Size in parent Mean S. D. c. V. No. (328 X 321) — 1 41 ± .24 ± .17 -+- •45 256 (328 X 321) — A 44 37-55 ± -36 ± .26 70 109 (328 X 321) — 2 40 39-73 ± .52 ± -37 •95 67 (328 X 321) — 3 36 ± .40 ± .28 •75 77 (328 X 321) — 4 39 ± .56 ± .40 ± 1 .00 72 very nearly overlap. In other words the curves are very nearly id
. Contributions from the Laboratory of Plant Genetics. CROSSES BETWEEN NICOTIAN A LANGSDORFFII AND N. ALATA 327 Table 4 Statistical constants of the corolla length in the five F2 families reported in table 3 Number Size in parent Mean S. D. c. V. No. (328 X 321) — 1 41 ± .24 ± .17 -+- •45 256 (328 X 321) — A 44 37-55 ± -36 ± .26 70 109 (328 X 321) — 2 40 39-73 ± .52 ± -37 •95 67 (328 X 321) — 3 36 ± .40 ± .28 •75 77 (328 X 321) — 4 39 ± .56 ± .40 ± 1 .00 72 very nearly overlap. In other words the curves are very nearly identical, . and it can be shown mathematically that the probability is very high that they are all samples of the same population. The similarity of the curves is shown graphically in figure 9. The points of the theoretical curves of these five F2 populations were calculated and are shown in. Figure 8. A, a random sample of N. Langsdorffii flowers from six different plants; B, a random sample of flowers from twelve different plants from the progeny row shown in figure 7 (X JA). comparison with the theoretical curve of the total distribution of all F2 observations. The extreme classes are so nearly identical that curves could not be distinguished when drawn super-imposed, so that only the points are indicated. Where no points for a particular curve are given it is understood that they lie on the single curve of total observations which is drawn. Genetics 1: Jy 1916. 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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