Vegetable cultivar differentiation

Susceptibility of vegetation to air pollutant injury is reportedly influenced by many climatic factors, edaphic factors, genetic variability, and by structural and biochemical variations in the plant. Observed differences in susceptibility have prompted numerous attempts to prepare lists of plant species according to susceptibility or tolerance to specific air pollutants. It has become apparent that such lists are frequently inaccurate because the differential in susceptibility within a single variety or cultivar may be as great as that between species. 

Other interesting applications arise from studies concerning vegetable-derived foods, where the differentiation is carried out according to the botanical variety or cultivar of the plant involved (Beullens et ah, 2008 Dias et ah, 2008 Kantor et ah, 2008 Rudnitskaya et ah, 2006b). In other cases, the attention is focused onto the geographical origin (Buratti et ah, 2004 Cosio et ah, 2006 Oliveri et ah, 2009). 

FIGURE 5,8.2. AA - FR and general peroxidase in the shoot apices in reproductive organs of wheat cultivars Bledsoe (A), N.P, 718 (B) under long (LD) and normal CND) photo-period and vernalization (V) and without vernalization (C) during the period of vegetative differentiation (v), induction of reproductive phase (r), period reproductive differentiation (rd) and period of maturation (s). 

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