“…Numerous studies suggest that pollen germination and\or tube growth are adversely affected by air pollutants including ozone (Feder, 1968 ;Feder & Sullivan, 1969a ;Masaru et al, 1976 ;Feder & Shrier, 1990 ;Hormaza et al, 1996) ; sulphur dioxide (Masaru et al, 1976 ;Varshney & Varshney, 1981 ;O'Conner et al, 1987) ; and fluorides (Sulzbach & Pack, 1972 ;Facteau & Rowe, 1977). Although relatively few studies have examined the effects of ozone, most have shown that exposure of pollen either in vivo on the anthers (Feder, 1968) or in vitro (Feder, 1968 ;Masaru et al, 1976 ;Hormaza et al, 1996) reduces germination and\or tube growth in various species (Table 1). By contrast, pollen from tomato (Lycopersicon esculentum) and petunia (Petuniai hybrida) (Krause et al, 1975), lily (Lilium longiflorum ; Masaru et al, 1976) and oilseed rape (B. napus cv.…”