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- Title
SPECTRAL AND MICROSCOPY STUDY ON UV-C RADIATION BIOEFFECTS IN SOME VEGETAL ORGANISMS.
- Authors
UTA, A. C.; TODERASCU, A. GRITCO; VOCHITA, G.; NADEJDE, C.; CREANGA, D.
- Abstract
The experimental study was focused on the effects of ultraviolet radiation in maize (Zea mays) at both cytogenetic and metabolic levels. Caryopses with uniform genophond were let to germinate in INCUCELL room in controlled environmental conditions before exposure to UV-C radiation for two different time durations. Biochemical investigation carried out by spectrophotometric method showed that photosynthesis pigments in seedling green tissue was lowered with 30%-40% denoting cell metabolism perturbation because of UV exposure during plant early ontogenetic stages. Several main types of chromosomal changes were highlighted in root meristem tissue - namely micronuclei and chromosomal aberrations: expelled and lagging chromosomes, inter-chromatin bridges - totalizing 4 to 4.5 % of total analyzed cells which suggested DNA injuries in developing plantlets.
- Subjects
EFFECT of ultraviolet radiation on corn; ULTRAVIOLET spectra; ULTRAVIOLET microscopy; PLANT cytogenetics; PLANT metabolism; SPECTROPHOTOMETRY
- Publication
Journal of Science & Arts, 2016, Vol 16, Issue 2, p141
- ISSN
1844-9581
- Publication type
Article