Acta Botanica Croatica, Vol. 43 No. 1, 1984.
Original scientific paper
Spontaneous Infection of two Brassica Varieties with Radish Mosaic Virus
Đorđe Mamula
; Hrvatska
Abstract
Radish mosaic virus (RaMV) has been found in Zagreb area (Yugoslavia) naturally infecting yellow swede (Brassica napus var. napobrassica subvar. rutabaga) (isolate Bnr) and rape (B. rapa var. sylvestris) (isolate Brs), the latter one known as a weed plant. The percentage of infected plants was approx. 10% (swede) and 30% (rape). Symptoms on the leaves of infected swede specimens included mild mosaic, malformations and sporadic occurrence of ochre yellow on blades. Sometimes premature fall of lower leaves was present. The infection did not cause much damage to the roots. Leaves of infected rape specimens displayed variegation, malformations, faint necrosis and moderate stunting. The identity of isolates Bnr and Brs with RaMV was proved serologically, on basis of test plant reaction and intracellular inclusion bodies. It seems that yellow swede and rape plants have not been described so far as natural hosts of the virus.
By means of spur test and intragel absorption test, using an antiserum to the HZ (type) isolate of the European strain, the isolates have been found to be serologically identical (isolate Brs) with or slightly different (isolate Bnr) from the HZ isolate.
It was found that the virus (isolate Bnr) caused necrotic and chlorotic lesions in inoculated leaves of Nicotiana debneyi.
Keywords
biljni virusi; virus mozaika rotkve
Hrčak ID:
158907
URI
Publication date:
31.12.1984.
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