Resistance in soybean PI 346304 to cowpea chlorotic mottle virus was related to restricted virus movement. When unifoliolate leaves were mechanically inoculated, both PI 346304 and susceptible cultivar Davis developed local chlorosis and accumulated similar quantities of virions in inoculated leaves. However, PI 346304 greatly restricted virus movement and subsequent accumulation in uninoculated sections of inoculated leaves and in uninoculated leaves and roots. Nonnecrotic resistance in PI 346304 was shown not to involve induced resistance, inactivation of virions, or resistance to symptom development (...)
No takes yet. Share an insight, caveat, or question.
B. J. Goodrick (1991) studied this question.