Untitled

Cultivar differences in the operation of the photosystem II of barley leaves

“…For the total characteristic of the physiological state of plants, most investigators use the parameter of maximum photochemical efficiency of PSII (Fv/Fm), which normally should not be lower than 0.740 [3]. Some researchers find a linear relationship of this parameter with the rate of carbon fixation [17], although other works indicated that there is no such dependence [3,18]. In a set of studied genotypes, the cv.…”

Luminescent and physiological indices of triticale plants under treatment of seeds with growth regulators

“…The fluorescent indicators of photosynthetic objects depend on a wide range of biotic and abiotic factors and are very attractive for monitoring the state of the photosynthetic apparatus and the assessment of its functional activity [1][2][3]. An important advantage of fluorescent research methods is that they usually can detect changes in the photosynthetic apparatus in the early stages of the impact of one or another factor, even before the appearance of typical morphological changes [1,[4][5][6].…”

“…The growth regulatory effect of these compounds has been shown earlier for barley, but it depended, however, on the weather con ditions of the year [10]. The goals of this study were (1) to study the effect of epin and zircon on the growth and development of triticale plants during before sow ing treatment of seeds, as well as (2) to establish the relationship between the values of the luminescent index ω = F 2 /F 1 in the leaves of triticale, on the one hand, and physiological indices (chlorophyll content, biometric parameters, plant productivity), on the other hand.…”