Oospores of Pustula helianthicola in sunflower seeds and their role in the epidemiology of white blister rust

IMA Fungus

Table 1 Occurrence of oospores in bracts and achenes of naturally infected sunflower from the field.

Sample number	Number of oospores in a bract (n = 5)¹	Rate (%) of seeds with oospores (n = 50)
1	low	12
2	high	18
3	high	12
4	low	6
5	medium	10
6	high	16
7	medium	10
8	low	4
9	medium	10
10	high	22
11	low	4
12	medium	8
13	high	28
14	medium	6
15	low	2
16	high	16
17	high	24

¹Low, medium, and high denotes approximately <200, <1000, and >5000 oospores per bract, respectively.

ISSN: 2210-6359