. The cotton plant in Egypt, studies in physiology and genetics. Cotton; Cotton. 152 THE COTTON PLANT IN EGYPT chap. of change in growth-rate, or—as we have formerly inter- preted this change—the liabihty to thermotoxy. It was expected that a fourth factor would be found operative in F.,, &c., namely, the habit of branching, but all heights and growth-habits appear to be distributed evenly throughout all the branch-types, from plants with- Sultani. King June Date 18 Fig. 56.—Growth of Stem. Parents F^ of an .lEgypto-Upland cross. Means of families. out monopodial branches at all,* up to pl
. The cotton plant in Egypt, studies in physiology and genetics. Cotton; Cotton. 152 THE COTTON PLANT IN EGYPT chap. of change in growth-rate, or—as we have formerly inter- preted this change—the liabihty to thermotoxy. It was expected that a fourth factor would be found operative in F.,, &c., namely, the habit of branching, but all heights and growth-habits appear to be distributed evenly throughout all the branch-types, from plants with- Sultani. King June Date 18 Fig. 56.—Growth of Stem. Parents F^ of an .lEgypto-Upland cross. Means of families. out monopodial branches at all,* up to plants in which the main axis was scarcely recognisable, t The heights of the Fj plants are therefore dependent on the three components first enumerated, but although we have described them as " factors," they may be each the resultant of more than one factor in the Mendelian sense, as is the colour of the petal. AVithin the limits of * See Leake, H. M., (2), (3), and (5) (8) (15). t Cf. Bateson, W,, in Lathy'rus,. 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 Balls, William Lawrence, 1882-. London, Macmillan and Co. , Ltd.
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