general colour of the plant was assessed using visual scores as 0 =
yellow, 1 = pale green, 2 = green and 3 = dark green. The disease
resistance was assessed using the scores; 0 = resistant, 1 =
susceptible and 2 = very susceptible. The pest resistance scores
were 0 = not attacked, 1 = mildly attacked and 2 = very susceptible.