Year 2022, Volume 7, Issue 2
| Year : | 2022 |
| Volume : | 7 |
| Issue : | 2 |
| Authors : | Oksana KLIACHENKO, Larysa PRYSIAZHNIUK |
| Title : | THE PHYSIOLOGICAL AND BIOCHEMICAL ESTIMATION OF THE ADAPTIVE ABILITY OF SUGAR BEET (BETA VULGARIS L.) TO SHADING AND PLANT DENSITY |
| Abstract : | The study of adaptive resistance to adverse environmental effects, which is connected with mechanisms of ontogenetic adaptation investigation, is an important direction of crop breeding. The adaptive resistance is identified on the phenotype level within the information stored and expressed by the genome. Ukrainian and Swedish lines, hybrids, and hybrid parent components of sugar beet under different shading conditions (30 and 60% of natural light) were investigated. Genotype-specific general physiological and biochemical features of the adaptive changes in leaves and productivity components in the course of metabolism are revealed. A significant decrease in the photosynthesis intensity and photochemical activity of chloroplasts occurred during the sugar beet plant adaptation to shading. The adaptive level of different sugar beet genotypes to low light was also expressed through the significant changes in the water-soluble carbohydrate pool of leaves themselves and leaf petioles. An important physiological parameter of sugar beet adaptive reaction is a response to shading in specific leaf weight (SLW), which is used in plant breeding as the trait of increased photosynthesis intensity. As a result of the study, it was found that the shading impacted significantly on the distribution and ratio of sucrose in the ring zones of vascular bundles and adjacent zones of the root storage parenchyma. The ontogenetic adaptation to photosynthetic active radiation light regime of photosynthetically active radiation (PAR) of sugar beet lines, hybrids, and their parent components of different origins under shading and different plant density in the field was shown. It was found that the stress intensity is a key characteristic of changes in physiological, biochemical, anatomical, and morphological traits of the leaf, which maintain plant homeostasis and ensure maximum efficiency of photosynthesis and productivity of different sugar beet genotypes under these conditions. |
| For citation : | Kliachenko, O., Prysiazhniuk, L. (2022). The physiological and biochemical estimation of the adaptive ability of sugar beet (Beta vulgaris l.) to shading and plant density. AGROFOR International Journal, Volume 7. Issue No. 2. pp. 29-39. DOI: 10.7251/AGRENG2202029K |
| Keywords : | ontogenetic adaptation, sugar beet, physiological and biochemical features, adaptation. |
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ISSN 2490-3434 (Printed)
ISSN 2490-3442 (Online)
ISSN 2490-3442 (Online)
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