. The botany of crop plants; a text and reference book. Botany, Economic. 74 BOTANY or CROP PLANTS (Fig. 27), and the entire mass of branches is the "; Common cereals, such as wheat and oats, invariably pro- duce a number of tillers, sometimes as many as 50. The tillers from the primary culm may produce tillers (lateral branches) and these in turn other tillers, so that under favor- able conditions several dozen culms may result from a single seed. As the internodes are much shortened, the branches. tertiary stem —scale leaf '/ p~^-S€con6ary stem ~~-primar\i stem --^crown roots
. The botany of crop plants; a text and reference book. Botany, Economic. 74 BOTANY or CROP PLANTS (Fig. 27), and the entire mass of branches is the "; Common cereals, such as wheat and oats, invariably pro- duce a number of tillers, sometimes as many as 50. The tillers from the primary culm may produce tillers (lateral branches) and these in turn other tillers, so that under favor- able conditions several dozen culms may result from a single seed. As the internodes are much shortened, the branches. tertiary stem —scale leaf '/ p~^-S€con6ary stem ~~-primar\i stem --^crown roots L—^ram remains l^^sj)nmary roots Fig. 27.—Diagrammatic representation of tillering in cereals. {After Schindler.) appear to come out at one point. In the wheat plant, two or three weeks old, three or four buds may be found, one in the axil of each leaf. Tillering results from the outgrowth of these lateral buds. Tillering activity varies with the species, the individual, and environmental conditions. In general, winter grains tiller more than summer ones. It is dependent especially upon the depth of seeding. There seems to be an optimum depth, which varies with the sort of grass. The average depth of the tillering node in cereals is about i to 2 centi-. 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 Robbins, Wilfred William, 1884-1952. Philadelphia, P. Blakiston's Son & Co
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
