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Apple proliferation

Acta Horticulturae (44): 175-199

Apple proliferation

a. Morvan, G.; Castelain, C. (Sta. Path. Veg., INRA, Montfavet, France). (New evidence of the high sensitivity of Malus dawsoniana to apple proliferation disease and of its value for testing apple trees) (175-182). When inoculated directly in June M. dawsoniana develops leaf reddening during the following autumn, and bark splitting and scaling in the next spring. Later the scion dies and the rootstock gives suckers ending in witches' brooms.

Accession: 000294247

Related references

Kaminska, M.; Zawadzka, B., 1973: Studies on apple proliferation disease in Poland III. Observations on the recovery of proliferation-affected apple trees. Fifteen-year-old Boiken, Jonathan, McIntosh and Belle de Boskoop trees were studied in 1969-70. They had shown up to 90% crop reduction in the previous 2 years, the peak of the disease symptoms having been reached in 1967. In 1968 the symptoms had...

Kaminska M.; Zawadzka B., 1973: Studies on apple proliferation in poland part 3 the observation on the recovery of proliferation diseased apple trees. Acta Agrobotanica 26(1): 97-101

Kaminska, M.; Zawadzka, B., 1973: Research into apple proliferation (witches' broom) in Poland. III. Observations on the disappearance of symptoms of apple proliferation. After the severe depression in yield which all four varieties suffered in the first year after infection, Jonathan recovered almost completely in the second year while Boiken and McIntosh took a year longer. Belle de Boskoop, though least affected...

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Brzin, J.; Ermacora, P.; Osler, R.; Lor, N.; Ravnikar, M.; Petrovic, N., 2003: Detection of apple proliferation phytoplasma by ELISA and PCR in growing and dormant apple trees. Apple proliferation (AP), caused by a phytoplasma belonging to AP group, is an important vector-borne and graft-transmissible disease of apple trees in most European pome fruit-growing areas. Rapid and sensitive detection methods are required for...

Anonymous, 2007: Expression of disease symptoms on different apple cultivars infected with apple proliferation phytoplasma

Trifonov, D., 1969: Apple proliferation, witches' broom. II. The influence of the virus on apple seeds. Observations on 12 varieties of apple between 1964 and 1967 showed that, although the number of seeds per fruit was not normally affected by the virus, their weight and viability were markedly reduced. In a few cases infected trees produced seeds...