Transmission of California aster and celery-yellows virus by three species of leafhoppers
AuthorHenry H. P. Severin
Author AffiliationsHenry H. P. Severin was Associate Entomologist in the Experiment Station.
Hilgardia 8(10):337-363. DOI:10.3733/hilg.v08n10p337. October 1934.
Abstract does not appear. First page follows.
It has been suggested that possibly an obligate relation exists between a specific insect vector and the aster-yellows virus, and that developmental changes and multiplication of the virus take place during the incubation period in the insect.(8) It has been assumed in the past that the aster-yellows virus could be disseminated only by the leafhopper, Cicadula divisa Uhl., which is widely distributed in America.
Ogilvie(10) reported yellows of China aster (Callistephus chinensis) in Bermuda, where Cicadula sexnotata (Fall.), responsible for the transmission of the virus there, has been known to occur since 1924. The disease also occurs on cos lettuce, cabbage lettuce, eight species of ornamental flowering plants, and several wild plants in Bermuda.
Fukuski(5) reported that aster yellows occurs in Japan. Kunkel(8) reported that Cicadula sexnotata occurs in Japan and probably throughout the Orient.
Dobroscky3 reported that aster yellows was found in the gardens of the Budapest Experiment Station, and in the vicinity of Lake Balaton Biological Laboratory, Hungary. Cicadula sexnotata is widespread and common in Europe.(8)
In California three species of leafhoppers transmit the aster-yellows virus. Cicadula divisa transmits the virus with greater efficiency than the mountain leafhopper, Thamnotettix montanus Van D. or the geminate leafhopper, T. geminatus Van D. Experiments with the leafhoppers Agallia californicum (Baker), A. cinera (O. &; B.), and Empoasca abrupta De L. bred on celery failed to transmit the yellows virus.(13)
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 Kunkel L. O. Celery yellows of California not identical with aster yellows in New York. Contrib. Boyce Thompson Inst. 1932. 4:405-414.
 Ogilvie L. Aster yellows in Bermuda. A disease of many cultivated plants. Bermuda Dept. Agr. Bul. 1927. 6(5):7-8.
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 Severin H. H. P. Minimum incubation periods of causative agent of curly top in beet leafhopper and sugar beet. Phytopathology. 1921. 11:424-429.
 Severin H. H. P. Yellows disease of celery, lettuce, and other plants, transmitted by Cicadula sexnotata (Fall. Hilgardia. 1929. 3(18):543-582. DOI: 10.3733/hilg.v03n18p543 [CrossRef]
 Severin H. H. P. Transmission of carrot, parsley, and parsnip yellows by Cicadula divisa. Hilgardia. 1932. 7(3):163-179. DOI: 10.3733/hilg.v07n03p163 [CrossRef]
 Severin H. H. P. Experiments with the aster-yellows virus from several states. Hilgardia. 1934. 8(10):305-325. DOI: 10.3733/hilg.v08n10p305 [CrossRef]
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Also in this issue:Trucks in produce marketing: About 15% of California's interstate shipments of fresh fruits and vegetables are moved by truck
Pacific coast canned fruits: F.o.b. prices reflect average industry experience for the period June 1, 1953 through May 30, 1954
World-wide grape surplus: Analysis of price-depressing effects of California's exportable surpluses on the grape product markets
Rancid flavor in fresh milk: Activating effect of some pipeline milkers and farm tanks apparently major cause of rancidity
Poison gas tests on gophers: Gases and gas bombs much less effective and more costly than poison bait, contrary to common claims
Irrigation tests with oranges: Effects of various irrigation practices on growth and production of citrus trees subject of studies
Citrus grove rejuvenation study: Ten areas selected for stationwide research on problems of decline in production and fruit size
Reseeding controlled burns: Records of 45 controlled brush burns in woodland-grass areas indicate self-reseeding predominates
Forage composition and yield: Studies of forage regrowth and grazing capacity on controlled burned areas in northern California
Off-flavor in canned olives: Tests show application of certain insecticides to olive trees will produce musty flavor in the fruit
Experiments with the aster-yellows virus from several states
Transmission of California aster yellows to potato by Cicadula divisa