Table 3. Mean value of absolute difference in virulence frequencies of isolates of Puccinia coronata collected from Avena sativa1 and A. sterilis1 in Israel in 1996 and 1998 determined over 35 differentials2.

 

 

Menashe, 1996

Tel Aviv, 1996

Tel Aviv, 1996

13.9

 

Menashe, 1998

37.7

38.1

 

1 Isolates from Menashe in 1996 and 1998 were collected from A. sativa plants; isolates from Tel Aviv, 1996 were from A. sterilis.

 

2 Differentials and virulence frequencies are listed in Table 2.