Feature of the photosynthetic pigment fund in seedlings of different varieties of spring barley when affected by the fungus <i>Bipolaris sorokiniana</i> (Sacc.) Shoem

The objects of research were the first leaves green seedlings spring barley (Hordeum vulgare L.) varieties Belarusian breeding − filmy (Magutny, Raider) and naked (Adamant). Seedlings different age (3, 5, 10 days old) infected with spores fungus Bipolaris sorokiniana (Sacc.) Shoem. a causative agent helminthosporiasis, analyzed 2 after infection. Varietal ontogenetic differences between cultivars in morphological parameters leaves, content photosynthetic pigments (chlorophylls (Chl) carotenoids), ratio spectral forms Chl at seedling stage found. Different amplitudes changes pigment helminthosporiasis stages development leaf established.