In fall of 2009, 50 young cladodes were collected from 50 cactus plants located in these units; 25 had chlorotic spots around the areoles Figure 1A and the rest were asymptomatic.
En otoño 2009, se recolectaron 50 cladodios jóvenes de 50 plantas de nopal localizadas en estas unidades; 25 tenían halos cloróticos alrededor de las areolas Figura 1A y el resto fueron asintomáticos.