University of California

Factors governing the initiation of sprout growth in citrus shoots


F. F. Halma

Author Affiliations

F. F. Halma was a doctoral student at the University of California and later became Professor of Subtropical Horticulture, University of California, Los Angeles. The investigation upon which this paper is based was conducted under the direction of Doctor H. S. Reed, to whom the writer is indebted for valuable advice and suggestions. Thanks are also due to Doctors H. S. Fawcett, A. R. C. Haas, and R. M. Holman for helpful suggestions in the preparation of the manuscript.

Publication Information

Hilgardia 1(14):295-340. DOI:10.3733/hilg.v01n14p295. April 1926.

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I. Introduction

It is a well known fact that in many plants the removal of a portion of a vertical shoot results in the outgrowth of buds which otherwise would have remained dormant. This outgrowth also occurs when a vertical stem is changed to a horizontal position. This phenomenon is generally termed regeneration or reconstitution. The term regeneration is applied in this paper to the outgrowth of buds when this results either from the removal of a part or from the change of position of a stem.

In most cases this outgrowth on vertical shoots is confined to the buds in the uppermost region, the length of the sprouts declining steadily as the distance from the apex increases. In horizontal shoots the outgrowth is confined to the dorsal side, the buds on the ventral side remaining dormant. This dominance or subordination is commonly referred to as physiological correlation or simply correlation.

VII. Literature Cited

[1] Barker B. T. P., Lees A. H. Factors governing fruit bud formation. Ann. Rept. Agr. Hort. Res. Sta., Bristol. 1919. 1916:85-98.

[2] Child C. M. Individuality in organisms. 1915. Univ. of Chicago Press. 213p. DOI: 10.5962/bhl.title.31522 [CrossRef]

[3] Child C. M. Physiological foundations of behaviour. 1924. New York: Henry Holt and Co. 330p. DOI: 10.1007/BF02411518 [CrossRef]

[4] Curtis Otis F. Stimulation of root growth in cuttings by treatment with chemical compounds. Cornell Univ. Agr. Exp. Sta. Memoir. 1918. 14:71-138. DOI: 10.5962/bhl.title.57587 [CrossRef]

[5] Curtis Otis F. The upward translocation of foods in woody plants. I. Tissues concerned in translocation. Am. Jour. Bot. 1920. 7:101-124. DOI: 10.2307/2435168 [CrossRef]

[6] Gardner F. E. A study of the conductive tissues in shoots of the Bartlett pear and the relationship of the food movement to dominance of the apical buds. California Agr. Exp. Sta. Tech. Paper. 1925. 20:1-26.

[7] Goebel K. Einleitung in die Experimentelle Morphologie der Pflanzen. 1908. Leipzig and Berlin: B. G. Teubner. 260p. DOI: 10.1002/iroh.19100030104 [CrossRef]

[8] Gortner R. A., Hoffman W. F. Determination of moisture content of expressed plant tissue fluid. Bot. Gaz. 1922. 74:308-313. DOI: 10.1086/333099 [CrossRef]

[9] Harris J. A., Gortner R. A. Notes on the calculation of the osmotic pressure of expressed vegetable saps from the depression of the freezing point with a table for the values of P for ? = 0.0001° to ? = 2.999°. Amer. Jour. Bot. 1914. 1:75-78. DOI: 10.2307/2435156 [CrossRef]

[10] Harvey R. B. Relation of catalase, oxidase and H+ concentration to the formation of overgrowth. Amer. Jour. Bot. 1920. 7:211-221. DOI: 10.2307/2440409 [CrossRef]

[11] Heinicke A. J. Catalase activity in dormant apple twigs; its relation to the condition of the tissue, respiration and other factors. Cornell Univ. Agr. Exp. Sta. Memoir. 1924. 74:1-33.

[12] Jones W. Neilson. Polarity phenomena in seakale roots. Ann Bot. 1925. 39:359-372.

[13] Loeb J. The organism as a whole. 1916. New York: Putnam. 379p. DOI: 10.5962/bhl.title.54229 [CrossRef]

[14] Loeb J. The chemical basis of axial polarity in regeneration. Science, n.s. 1917. 46:547-551. DOI: 10.1126/science.46.1197.547 [CrossRef]

[15] Loeb J. The physiological basis of morphological polarity in regeneration II. Jour. Gen. Physiol. 1919. 1:687-715. DOI: 10.1085/jgp.1.6.687 [CrossRef]

[16] Loeb J. Regeneration. 1924. New York: McGraw-Hill. 143p. DOI: 10.1007/BF02084251 [CrossRef]

[17] Reed H. S. Correlation and growth in the branches of young pear trees. Jour. Agr. Research. 1921. 21:849-875.

[18] Reed H. S. The nature of growth. Amer. Naturalist. 1924. 58:337-349. DOI: 10.1086/279986 [CrossRef]

[19] Reed H. S. Growth and differentiation in apricot trees. Univ. California Publ. Agr. Sci. 1924. 5:1-55. DOI: 10.5962/bhl.title.61332 [CrossRef]

[20] Reed H. S., Halma F. F. On the existence of a growth-inhibiting substance in the Chinese lemon. Univ. Calif. Publ. Agri. Sci. 1919. 4:90-112. DOI: 10.5962/bhl.title.61396 [CrossRef]

[21] Robertson T. B. The chemical basis of growth and senescence 1923. p.389. (Philadelphia, Lippincott)

[22] Sachs J. Stoff und Form der Pflanzenorgane. Arbeiten Bot. Inst. Würzburg. 1882. 2:452-689. Leipzig. (Cited after Loeb.)

[23] Vöchting H. Über Organbildung im Pflanzenreich. 1878. 1:258

Halma F. 1926. Factors governing the initiation of sprout growth in citrus shoots. Hilgardia 1(14):295-340. DOI:10.3733/hilg.v01n14p295
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