Infection of perennial delphiniums by California-aster-yellows virus

Severin, H

Infection of perennial delphiniums by California-aster-yellows virus

Author

Henry H. P. Severin

Author Affiliations

Henry H. P. Severin was Associate Entomologist in the Experiment Station.

Publication Information

Hilgardia 14(8):411-440. DOI:10.3733/hilg.v14n08p411. June 1942.

PDF of full article, Cite this article

Abstract

Abstract does not appear. First page follows.

Introduction

Several obscure diseases attack garden varieties of perennial delphiniums (hybrids and horticultural varieties of several species of Delphinium) and cause losses to seed companies, nurserymen, and growers. One of these diseases is particularly troublesome, sometimes causing delphiniums grown from seed to fail totally the second year. Some of the choicest seeds, requiring hand-pollination and bagging, are grown in California; and often these hybrid seeds, also selected for mildew resistance, are lost owing to this disease. Because the symptoms resemble those of California aster yellows on other host plants, an investigation was undertaken to determine whether this disease is caused by the virus of California aster yellows.

In the course of the work on this disease, several other delphinium virus diseases and troubles resembling viroses were investigated. The reports of these investigations have been divided into six papers. The present paper is confined to the work with California aster yellows on perennial delphiniums. Experiments with two other naturally occurring viroses of perennial delphiniums are reported in the other papers of this issue ⁽¹⁸⁾, ⁽²²⁾.3 The attempts to infect perennial delphiniums experimentally with other viruses are reported in a fourth paper ⁽²⁰⁾. Two leaf variegations of perennial delphiniums resembling viroses but not infectious were encountered; these are reported in a fifth paper ⁽¹⁹⁾. Several of the virus diseases attacking perennial delphiniums affect also annual delphiniums, or larkspur (Delphinium Ajacis); the experiments with this host plant are published in a sixth paper ⁽²¹⁾.

Literature Cited

[1] Ashmead W. H. Homoptera of Alaska. Harriman Alaska Expedition. 1904. 7: New York, N. Y.: Doubleday, Page and Company. 238p.

[2] Burnett G. Stunt, a virosis of delphinium. Phytopathology. 1934. 24:467-81.

[3] Essig E. O. Insects of western North America. 1926. New York, N. Y.: The Macmillan Company. 1035p.

[4] Gillette C. P., Baker C. F. A preliminary list of the Hemiptera of Colorado. Colorado Agr. Exp. Sta. Bul. 1895. 31:1-137.

[5] Heald F. D. Manual of plant diseases. 1933. New York, N.Y.: McGraw-Hill Book Company. 953p.

[6] Heald F. D., Burnett G. A virous disease of perennial delphiniums. Washington Agr. Exp. Sta. Sci. Paper. 1934. 275:1-8. Reprinted from: Amer. Delphinium Soc. Bul. 2[2]: 14-21. 1934.)

[7] Knowlton G. F., Allen W. M. Some intermountain leafhoppers. Utah Acad. Sci. Proc. 1936. 13:269-76.

[8] Kunkel L. O. Celery yellows of California not identical with aster yellows of New York. Boyce Thompson Inst. Contrib. 1932. 4:405-14.

[9] Mulford F. L. Culture and disease of delphiniums. U. S. Dept. Agr. Farmers’ Bul. 1939. 1827:1-11.

[10] Orton C. R. The virus diseases of plants. Amer. Delphinium Soc. Bul. 1933. 4:26-33.

[11] Osborn H. Leafhoppers affecting cereals, grasses, and forage crops. U. S. Dept. Agr. Bur. Ent. Bul. 1912. 108:1-123.

[12] Rawlins T. E., Tompkins C. M. Studies on the effect of carborundum as an abrasive in plant virus inoculations. Phytopathology. 1936. 26:578-87.

[13] Severin H. H. P. Yellows disease of celery, lettuce, and other plants, transmitted by Cicadula sexnotata (Fall.). Hilgardia. 1929. 3(18):543-83. DOI: 10.3733/hilg.v03n18p543 [CrossRef]

[14] Severin H. H. P. Transmission of carrot, parsley, and parsnip yellows by Cicadula divisa. Hilgardia. 1932. 7(3):163-79. DOI: 10.3733/hilg.v07n03p163 [CrossRef]

[15] Severin H. H. P. Experiments with the aster-yellows virus from several states. Hilgardia. 1934. 8(10):305-25. DOI: 10.3733/hilg.v08n10p305 [CrossRef]

[16] Severin H. H. P. Transmission of California aster and celery-yellows virus by three species of leafhoppers. Hilgardia. 1934. 8(10):339-61. DOI: 10.3733/hilg.v08n10p337 [CrossRef]

[17] Seveein H. H. P. Potato naturally infected with California aster yellows. Phytopathology. 1940. 30(12):1049-51.

[18] Severin H. H. P. Celery calico on perennial delphiniums and certain other host plants. Hilgardia. 1942. 14(8):441-46. DOI: 10.3733/hilg.v14n08p441 [CrossRef]

[19] Severin H. H. P. Leaf variegations of perennial delphiniums. Hilgardia 1942. (in press). DOI: 10.3733/hilg.v14n10p571 [CrossRef]

[20] Severin H. H. P. The susceptibility of perennial delphiniums to six viruses. Hilgardia 1942. (in press). DOI: 10.3733/hilg.v14n10p549 [CrossRef]

[21] Severin H. H. P. Viroses of annual larkspurs. Hilgardia 1942. (in press). DOI: 10.3733/hilg.v14n10p583 [CrossRef]

[22] Severin H. H. P., Dixon R. C. Perennial-delphinium ringspot. Hilgardia. 1942. 14(8):465-90. DOI: 10.3733/hilg.v14n08p465 [CrossRef]

[23] Severin H. H. P., Freitag J. H. Ornamental flowering plants naturally infected with curly-top and aster-yellow viruses. Hilgardia. 1934. 8(8):233-60. DOI: 10.3733/hilg.v08n08p233 [CrossRef]

[24] Severin H. H. P., Haasis F. A. Transmission of California aster-yellows to potato by Cicadula divisa. Hilgardia. 1934. 8(10):327-35. DOI: 10.3733/hilg.v08n10p327 [CrossRef]

[25] Severin H. H. P., Oliver J. Delphinium aster yellows. (Abstract.) Phytopathology. 1939. 29(9):826

[26] Smith K. M. Recent advances in the study of plant viruses. 1933. London: J. &; A. Churchill. 423p.

[27] Van Duzee E. P. New California Homoptera. Amer. Ent. 1890. 6:77-80.

[28] Van Duzee E. P. New North American Homoptera. Canad. Ent. 1892. 24:266-68. DOI: 10.4039/Ent24266-10 [CrossRef]

[29] Van Duzee E. P. A preliminary list of Hemiptera of San Diego County, California. San Diego Soc. Nat. Hist. Trans. 1914. 2:1-57.

[30] Van Duzee E. P. Notes on some Hemiptera taken near Lake Tahoe, California. Univ. California Pubs. Ent. 1916. 1:229-49.

[31] Van Duzee E. P. Catalogue of Hemiptera north of Mexico excepting the Aphididae, Coccidae, and Aleurodidae. Univ. California Pubs. Ent. 1917. 2:1-902.

[32] Van Duzee E. P. Report upon a collection of Hemiptera made by Walter M. Giffard in 1916 and 1917, chiefly in California. California Acad. Sci. Proc. 4th series. 1917. 7:249-318.

[33] The Plant Disease Reporter Sup. 1927. 59:111

[34] The Plant Disease Reporter. Sup. 1927. 65:420

[35] The Plant Disease Reporter. 1933. 17:5

[36] The Plant Disease Reporter Sup. 1935. 90:135

[37] The Plant Disease Reporter Sup. 96:268-69. 1936

[38] The Plant Disease Reporter Sup. 1938. 110:263

Also in this issue:

Irrigation pumping plant characteristics in the San Joaquin Valley

Gibberellins on grape

Suffolk and Southdown rams as sires of market lambs compared in long-term study

Management of weeder geese in commercial fields

Growth responses of three annual clovers to treatments with 2,4-D—Part II

Collapse in California woods

Mallet wound canker of almond trees

Wind machine-orchard heater system for frost protection in deciduous orchards

Breeding potatoes for disease resistance

Potash on potatoes for chips

Potash: In California vineyards

Chemical weed control in azalea seed crop

Copper in embryonic development

Color and stability of wines

Control of the vinegar fly

Embedding media for electron microscopy

Effect of environment on rice plants

Moderate grazing protects future forage production

Corrosion of aluminum irrigation pipe

Chemical regulator of plant growth

Lygus bug tolerance: To insecticides

Land disposal of industrial waste waters

Celery calico on perennial delphiniums and certain other host plants

Perennial-delphinium ringspot