Abstract
All strains investigated of PVYc, PVYn and PVYo, even a strain of PVYo, which did not produce local lesions on ‘A6’, induced pin-point necrotic lesions on detached and non-detached leaflets of TE1 (Solanum chacoense) 3–4 days after inoculation. However, the local lesion production per cm2 on ‘A6’ leaflets was higher than that on leaflets of TE1 after inoculation with various dilutions of PVY. Moreover, the foliage production of TE1 was much lower than that of ‘A6’. Therefore TE1 is less suitable for routine detection of PVY than ‘A6’.
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