Under favorable environmental conditions, Pst urediospores
landing on the surface of wheat leaves germinate, produce germ tubes and appressoria, and then penetrate into wheat leaf tissues [1,5].
The generated monopustule isolates were then further multiplied on Morocco until sufficient urediospores
were collected for differential host test.
E., and Coauthors, 2013: Urediospores
of rust fungi are ice nucleation active at > -10[degrees]C and harbor ice nucleation active bacteria.
Table 2--Percentage of germination (G) and reduce germination (RG) of urediospores
of Phakopsora euvitis collected in 'Niagara Rosada" grape plants treated with fungicides at two, four and eight days after inoculation.
Henn.) on the basis of artificial inoculation in 1998 to 2001 with a bulk of urediospores
collected in eastern Montana from 1990 to 1996.
The longest well-documented single movement of urediospores
in North America was at least 680 km, between two wheat-growing regions in Canada separated by forest, lakes, and tundra (Roelfs 1985).
of 34 Pst isolates (25 Pakistani and 9 U.S.) were obtained from Dr.