. Bulletin of the Department of Agriculture. Agriculture; Agriculture. A BRACHYTIC VARIATION IN MAIZE. 11 ear stalk. This factor is the number of nodes. The actual number of nodes can not be determined with accuracy, and an estimate is likely to give very misleading results. Further evidence for the independent inheritance of the brachysm of ear stalks and that of the culm is to be found in an analysis of the correlations of these characters. In the normal plants of the second generation of the brachytic- Boone hybrid there was a correlation of ± between the length of the longes
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. A BRACHYTIC VARIATION IN MAIZE. 11 ear stalk. This factor is the number of nodes. The actual number of nodes can not be determined with accuracy, and an estimate is likely to give very misleading results. Further evidence for the independent inheritance of the brachysm of ear stalks and that of the culm is to be found in an analysis of the correlations of these characters. In the normal plants of the second generation of the brachytic- Boone hybrid there was a correlation of ± between the length of the longest internode on the main culm and the length of the ear stalk. This correlation is reversed in the brachytic plants of the same hybrid, but the coefficient of ± is not a significant deviation from no correlation. These low correlations indicate an. 28 cm Fig. 4.—Frequency distribution of length of ear stalk on brachytic, brachytic X Boone Fi, and brachytic and normal plants segregated in the Fs of brachytic X Boone. almost complete independence of the factors which affect the inter- node length of the culm and those which affect the ear stalk. AGRICULTURAL ADVANTAGES. Brachysm in maize produces a form of plant which seems admir- ably adapted to meet the unusual requirements of dry land and irrigated regions. The chief obstacles to the utilization of such variations lies in the numerous defects which commonly accompany them (Cook, 4), but the present brachytic strain is relatively free from undesirable corollaries. The striking characteristics of this brachytic type of plant are its reduced height and sturdy erectness. There are many situations in /. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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