It was used 14-day old
urediniospores produced on leaves of potted 'Niagara Rosada' plants, as inocula.
Urediniospores were globose, echinulate, 24.9 [+ or -] 2.7 [micro]m in diameter, with 3 equatorial pores and 1.5 to 2.0 [micro]m thick cinnamon walls.
Six-day-old seedlings were sprayed, four pots at a time, with 0.5 mL (total volume)
urediniospore suspension on a rotating turntable.
Urediniospores subglobose or ovoid, yellowish brown, 12-18 x 16-26 um; wall densely echinulate, germ pores 2-4,scattered.
([double dagger]) Units are on a scale of 0 = no uredinia, 1 = chlorotic flecks, 2 = small uredinia surrounded by necrosis with limited
urediniospore production, 3 = medium size uredinia with moderate sporulation, and 4 = large uredinia and abundant sporulation.
Urediniospores stored in evacuated glass tubes in liquid N were heat-shocked at 40 [degrees] C for 10 min and increased in the greenhouse by inoculating plants of the susceptible oat cultivar, Markton.
tritici pathotype QCCJ at the early jointing stage by injecting an aqueous suspension of
urediniospores into the hollow culm of plants chosen at random at [appproximately equals] 0.75-m intervals along each spreader row.
UREDINIOSPORES globose to ellipsoid, light brown, wall chestnut brown, 20-32.5 x 22.5-32.5 um, wall 1.5-2.5 um thick, echinulate, germ pores-3.
Survival of dispersed
urediniospores of Tranzschelia discolor Fckl.(Tranz&Litv) on leaves of Prunus domestica L.
Uredinia are observed initially in the dark dots that progressively acquire a light brown to red brown color and open in a minute pore releasing the colorless
urediniospores, which become tan and accumulate around the pores (Balardin, 2002; Yorinori et al., 2004; Almeida et al., 2005).