University of California

Rest and dormancy in garlic


Louis K. Mann
David A. Lewis

Authors Affiliations

Louis K. Mann was Associate Professor of Vegetable Crops and Associate Olericulturist in the Experiment Station, Davis; David A. Lewis was Fulbright Fellow, University of California, Davis.

Publication Information

Hilgardia 26(3):161-189. DOI:10.3733/hilg.v26n03p161. October 1956.

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Garlic bulbs, both for food and for replanting, are commonly held in storage for many months. If they are planted immediately after harvest, the bulbs do not produce either roots or sprouts, and may be said to be in a state of rest. The rest decreases with time, but the rate of decrease is markedly affected by the temperature at which the bulbs are held. Experiments to determine how length and temperature of storage affect rest in garlic are described in the present paper.

Garlic bulbs were held at a series of temperatures for different lengths of time, and were then planted, again at several temperatures, to determine how quickly they would root or sprout. The results indicate how storage temperature, length of storage, and soil temperature affect the ability of garlic cloves to root and sprout. Production of carbon dioxide by bulbs stored at different temperatures was also determined. These results are compared with similar reports in the literature for other crops, such as potato and onion.

Storage temperature is also known to have a marked effect on the quality of garlic grown from stored bulbs. This aspect of storage is not covered in this paper, and recommendations for storage of bulbs to be used for planting are not made.

Literature Cited

Appleman Charles O. Biochemical and physiological study of the rest period in the tubers of Solanum tuberosum. Maryland Agr. Exp. Sta. Bul. 1914. 183:181-226.

Blaauw A. H., Hartsema Annie M., Van Beekom C. W. C. Bloemen of bollen bij Allium Cepa. L. Koninkl. Ned. Akad. Wetenschap. Proc. Ser. C. 1941. 44:245-52.

Boswell V. R. Influence of the time of maturity of onions upon the rest period, dormancy, and responses to various stimuli designed to break the rest period. Amer. Soc. Hort. Sci. Proc. 1924a. 20(1923):225-33.

Boswell V. R. Influence of the time of maturity of onions on the behavior during storage, and the effect of storage temperature on subsequent vegetative and reproductive development. Amer. Soc. Hort. Sci. Proc. 1924b. 20(1923):234-39.

Claypool L. L., Keefer R. M. A colorimetric method for CO2 determination in respiration studies. Amer. Soc. Hort. Sci. Proc. 1942. 40:177-86.

Denny F. E. Shortening the rest period of gladiolus by treatment with chemicals. Boyce Thompson Inst. Contrib. 1930. 2:523-34. DOI: 10.2307/2435703 [CrossRef]

Denny F. E. Storage temperatures for shortening the rest period of gladiolus corms. Boyce Thompson Inst. Contrib. 1936. 8:137-40.

Denny F. E. Prolonging, then breaking, the rest period of gladiolus corms. Boyce Thompson Inst. Contrib. 1938. 9:403-8.

Denny F. E. Respiration of gladiolus corms during prolonged dormancy. Boyce Thompson Inst. Contrib. 1939. 10:453-60.

Denny F. E. Effect of a few hours of chilling upon the germination of gladiolus corms subjected to an artificially prolonged rest period. Boyce Thompson Inst. Contrib. 1942. 12:375-86.

Emilsson Börje. Studies on the rest period and dormant period in the potato tuber. Acta Agr. Suecana. 1949. 3(3):189-284.

Fairburn David C. Growth responses of the gladiolus as influenced by storage temperatures. Iowa Exp. Sta. Res. Bul. 1934. 170:

Hartman John D. Studies of the effects of storage temperature on the propagation value of potato tubers. Cornell Univ. Agr. Exp. Sta. Mem. 1934. 168:

Hartsema Annie M. Storage of bulbs. Inst. Internat’l. du froid, annexe, Bul. 1954. 1:115-21.

Hartsema Annie M., Luyten Ida. Bloem- en zaadvorming bij zilveruien. Meded. Dir. Tuing. 1955. 18:49-56.

Heath O. V. S., Holdsworth M. Morphogenic factors as exemplified by the onion plant Symp. II. Growth Soc. Expt. Biol. 1948. New York: Academic Press. p. 326-50.

Heath O. V. S., Mathur P. B. Studies in the physiology of the onion plant. II. Inflorescence initiation and development, and other changes in the internal morphology of onion sets, as influenced by temperature and day length. Ann. Appl. Biol. 1944. 31:173-86. DOI: 10.1111/j.1744-7348.1944.tb06724.x [CrossRef]

Hogetop K. Untersuchungen über den Einfluss der Temperatur auf Keimung und Lebensdauer der Kartoffelknolle. Bot. Archiv. 1930. 30:350-413.

Hopkins E. F. Relation of low temperatures to respiration and carbohydrate changes in potato tubers. Bot. Gaz. 1924. 78:311-25. DOI: 10.1086/333398 [CrossRef]

Jones H. A. Preliminary report on onion dormancy studies. Amer. Soc. Hort. Sci. Proc. 1921. 17(1920):128-33.

Jones H. A. The influence of storage temperature on seed production in the Ebenezer onion. Amer. Soc. Hort. Sci. Proc. 1928. 24(1927):61-63.

Jones H. A., Perry B. A., Edmundson W. C. Vegetative propagation of short-day varieties of onions as an aid in a breeding program. Amer. Soc. Hort. Sci. Proc. 1949. 53:367-70.

Karmarkar D. V., Joshi B. M. Investigations on the storage of onions. Indian Jour. Agr. Sci. 1941. 11:82-94.

Loomis W. E. Temperature and other factors affecting the rest period of potato tubers. Plant Physiol. 1927. 2:287-302. DOI: 10.1104/pp.2.3.287 [CrossRef]

Loomis W. E. Forcing gladiolus. Amer. Soc. Hort. Sci. Proc. 1934. 30(1933):585-88.

Loomis W. E., Evans M. M. Experiments in breaking the rest period of corms and bulbs. Amer. Soc. Hort. Sci. Proc. 1929. 25(1928):73-79.

Magruder Roy, Wester R. E., Jones H. A., Randall T. E., Snyder G. B., Brown H. D., Hawthorn Leslie R. Storage quality of the principal American varieties of onions. U. S. Dept. Agr. Cir. 1941. 618:

Mann Louis K. Anatomy of the garlic bulb and factors affecting bulb development. Hilgardia. 1952. 21(8):195-251. DOI: 10.3733/hilg.v26n03p161 [CrossRef]

Mann Louis K. Storage temperature and bulbing of garlic (Allium sativum L.) 1954. pp.305-06. Huitième Congrès international du botanique, rapports et communications, sec. 11 et 12.

Mann L. K., Minges P. A. Growing garlic in California 1953. Univ. of Calif. Veg. Crops Series No. 59. Davis, California.

Müller-Thurgau H. Ueber Zuckeranhäufung in Pflanzentheilen in Folge wiederer Temperatur. Landw. Jahrb. 1882. 11:751-828.

Müller-Thurgau H., Schneider-Orelli O. Beiträge zur Kenntnis der Lebensvorgänge in ruhenden Pflanzenteilen, I. Über den Einfluss des Vorerwärmens und einiger anderer Faktoren. Flora [Jena]. 1910. 101:309-72.

Newton William. Metabolism of nitrogen compounds in dormant and nondormant potato tubers. Jour. Agr. Res. 1927. 35:141-46.

Rosa J. T. Relation of tuber maturity and of storage factors to potato dormancy. Hilgardia. 1928. 3(4):99-124. DOI: 10.3733/hilg.v26n03p161 [CrossRef]

Ryan George F. Effects of temperature on rest in gladiolus corms. Amer. Soc. Hort. Sci. Proc. 1955. 65:463-71.

Snell K. Die Beschleunigung der Keimung bei der Kartoffelknolle. Berlin Deutsch. Bot. Ges. 1932. 50a:146-61.

Tedin Olof. The influence of cold-treatment upon the sprouting of the potato tuber. Bot. Notiser. 1938. 1938:257-66.

Thompson H. C. Effect of size of sets on yield and on the production of doubles in onions. Amor. Soc. Hort. Sci. Proc. 1935. 32(1934):558-60.

Thompson H. C., Smith Ora. Seedstalk and bulb development in the onion (Allium cepa L.). Cornell Univ. Agr. Exp. Sta. Bul. 1938. 708.:

Thornton Norwood C. Oxygen regulates the dormancy of the potato. Boyce Thompson Inst. Contrib. 1939. 10:339-61.

Thornton Norwood C., Denny F. E. Oxygen intake and carbon dioxide output of gladiolus corms after storage under conditions which prolong the rest period. Boyce Thompson Inst. Contrib. 1941. 11:421-30.

Volz E. C., Keyes C. G. Gladiolus forcing: effects of exposure to high temperatures before planting. Amer. Soc. Hort. Sci. Proc. 1934. 30(1933):583-84.

Weinard F. F., Decker S. W. Experiments in forcing gladioli. Illinois Agr. Exp. Sta. Bul. 1930. 357:

Went F. W. Thermoperiodicity in Vernalization and Photoperiodism. Lotsya. 1948. 1:145-57.

Wright R. C., Lauritzen J. I., Whiteman T. M. Influence of storage temperature and humidity on keeping qualities of onions and onion sets. U. S. Dept. Agr. Tech. Bul. 1935. 475:

Wright R. C., Peacock Walter M. Influence of storage temperatures on the rest period and dormancy of potatoes. U. S. Dept. Agr. Tech. Bul. 1934. 424:

Mann L, Lewis D. 1956. Rest and dormancy in garlic. Hilgardia 26(3):161-189. DOI:10.3733/hilg.v26n03p161
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