Annual report of the Board of Regents of the Smithsonian Institution . Normal Spring Growth on a Blueberry Stem. This illustration is from a photograph taken April 24,1909. In the preceding season the plant hadsent up an unbranched shoot. After an outdoor chilling through the winter and early springit put out flowers and new twigs, as shown in the illustration. The fact to be especially noted isthat the new growth on this stem took place from numerous buds. (Natural size.) Smithsonian Report, 1919.—Coville. Plate Abnormal Spring Growth on a Blueberry Stem, Due to Lack of Chilling. This ph
Annual report of the Board of Regents of the Smithsonian Institution . Normal Spring Growth on a Blueberry Stem. This illustration is from a photograph taken April 24,1909. In the preceding season the plant hadsent up an unbranched shoot. After an outdoor chilling through the winter and early springit put out flowers and new twigs, as shown in the illustration. The fact to be especially noted isthat the new growth on this stem took place from numerous buds. (Natural size.) Smithsonian Report, 1919.—Coville. Plate Abnormal Spring Growth on a Blueberry Stem, Due to Lack of Chilling. This photograph was taken on May 19,1913. Growth is taking place from only one bud, the thirdfrom the tip. The uppermost bud is a flowering bud, the second a leaf bud. Both are dead ordying. This plant has stood in the warm greenhouse all winter and spring. If it had had theusual two or three months of chilling, its starch would have been transformed into sugar andthe stem would have flowered and put out new twig growth from numerous buds in the samemanner as the stem shown in Plate 14. (Natural size.) Smithsonian Report, 1919.—Cov Plate 16.
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