target cluster of watermelon

Target cluster-This disorder is not well understood. It is apparently not an infectious disorder. However, in two instances documented below, the symptoms seem to be associated with a potyvirus infection. Target cluster is not a common or economically important disorder. 

Figure 1. Target cluster of watermelon. Positive for potyvirus. Figure 1. Target cluster of watermelon. Positive for potyvirus.
Figure 2. Target cluster of watermelon. Negative for potyvirus. Figure 2. Target cluster of watermelon. Negative for potyvirus.
Figure 3. Target cluster of watermelon. Positive for papaya ringspot virus. Figure 3. Target cluster of watermelon. Positive for papaya ringspot virus.
Figure 4. Target cluster of watermelon. Not analyzed for virus. Figure 4. Target cluster of watermelon. Not analyzed for virus.