Tag Archives: variability

xxx Y. Tsytsiura
The influence of agroecological and agrotechnological factors on the generative development of oilseed radish (Raphanus sativus var. oleifera Metzg.)
Abstract |

The influence of agroecological and agrotechnological factors on the generative development of oilseed radish (Raphanus sativus var. oleifera Metzg.)

Y. Tsytsiura

Vinnytsia National Agrarian University, Faculty of Agronomy and Forestry,
Sonyachna street, 3, UA21008 Vinnytsia, Ukraine
Correspondence: yaroslavtsytsyura@ukr.net; yaroslav301974@gmail.com

Abstract:

During the eight-year research period, we determined the peculiarities and regularities of morphological (length and diameter) and anatomical (stem thickness) features of oilseed radish pods considering their location within the generative part of plants for different types of spatial structure of the inflorescence generated in agrocenosises of different densities. We carried out the analysis and statistical grouping of morphological features of oil radish pod in the full range of possible technological options of pre-sowing construction of its agrocenosises, as well as within the selected three zones (tiers) of inflorescence by the nature of variation and variability of morphoparameters pod, namely, lower, middle and upper. We described in detail the stages of pod formation (microstages ВВСН 69-87) considering features of its linear and radial growth, peculiarities of formation of general internal anatomical structure with analysis of mathematical and statistical regularities of changes in these parameters in accordance as per order of its placement within an inflorescence (separately main axis and system of lateral branches). We determined the optimum technological intervals for the construction of oilseed radish agrocenosises, which ensure the combination of appropriate levels of morphometry formation of its fruit elements with the predicted level of reproductive effort and seed productivity. We made a general assessment of the peculiarities of formation of pod technological effectiveness in terms of ease of threshing and possible losses of seeds depending on the complex of factors under study.

Key words:

, , , , , ,




540–551 M. Lozinskiy, L. Burdenyuk-Tarasevych, M. Grabovskyi, T. Lozinska, V. Sabadyn, I. Sidorova, T. Panchenko, Y. Fedoruk and Y. Kumanska
Evaluation of selected soft winter wheat lines for main ear grain weight
Abstract |
Full text PDF (773 KB)

Evaluation of selected soft winter wheat lines for main ear grain weight

M. Lozinskiy¹, L. Burdenyuk-Tarasevych¹, M. Grabovskyi²*, T. Lozinska³, V. Sabadyn¹, I. Sidorova¹, T. Panchenko², Y. Fedoruk² and Y. Kumanska¹

¹Bila Tserkva National Agrarian University, Department of Genetics, Breeding and Seed production, Sq. Soborna 8/1, UA09100, Bila Tserkva, Ukraine
²Bila Tserkva National Agrarian University, Department of Technologies in Plant Growing and Plant Protection, Sq. Soborna 8/1, UA09100, Bila Tserkva, Ukraine
³Bila Tserkva National Agrarian University, Department of Forestry, Botany and Plant Physiology, Sq. Soborna 8/1, UA09100, Bila Tserkva, Ukraine
*Correspondence: nikgr1977@gmail.com

Abstract:

Studies to assess the breeding samples of soft winter wheat by weight of grain from the main ear and determine the indicators of adaptability were conducted at the Bila Tserkva Research and Selection Station (BTRSS) in 2011–2013. The study revealed significant differences in breeding lines in the range of variability of grain mass from the main ear and identified small, medium and significant coefficients of variation, which indicates their excellent response to environmental conditions. It was due to genotype, year conditions and their interaction. Line 42 KS had significantly higher than the standard grain weight of the main ear (0.14 g) and the lowest value of the coefficient of variation (8.7%). According to the indicators of adaptability (GAC, σ²(GxE)gi, σ²SACi, σSACi, etc.) the lines 42 KS, 24 KS and 44 KS were distinguished. There was a significant correlation between the weight of grain from the ear and the weight of 1,000 grains (0.603–0.674) and the direct influence of the weight of grain from the main ear on the weight of grain from the plant and grain yield (0.805–0.942). Selected lines as a result of research (2015–2020) from these populations of soft winter wheat are competitively tested in the conditions of Bila Tserkva Research and Selection Station, forming high grain yields (7.39–8.12 t ha-1) and will be transferred to 2021 for the State variety test for inclusion in the Register of plant varieties suitable for distribution in Ukraine.

Key words:

, , , , ,




1584–1596 A. Zymaroieva, O. Zhukov, T. Fedonyuk and T. Pinkina
The spatio-temporal trend of rapeseed yields in Ukraine as a marker of agro-economic factors influence
Abstract |
Full text PDF (707 KB)

The spatio-temporal trend of rapeseed yields in Ukraine as a marker of agro-economic factors influence

A. Zymaroieva¹*, O. Zhukov², T. Fedonyuk³ and T. Pinkina⁴

¹Zhytomyr National Agroecological University, Faculty of Forestry, Department of Forest Resources Utilization, Stary Blvd, 7, UA10008Z Zhytomyr, Ukraine
²Bogdan Khmelnitsky Melitopol State Pedagogical University, Faculty of Chemistry and Biology, Botany and Horticulture Department, Hetmanska steet 20, UA72318 Melitopol, Ukraine
³Zhytomyr National Agroecological University, Faculty of Forestry, Department of Forest Ecology and Life Safety, Stary Blvd, 7. UA10008 Zhytomyr, Ukraine
⁴Zhytomyr National Agroecological University, Faculty of Ecology and Law, Department of Bioresources, Aquaculture and Natural Sciences, Stary Blvd, 7, UA10008 Zhytomyr, Ukraine
*Correspondence: nastya.zymaroeva@gmail.com

Abstract:

The paper demonstrates the applicability of several statistical methods to the analysis and interpretation of the average rapeseed yield data. It proves our hypothesis that the general trend of rapeseed yield variations in Ukraine during 1991–2017 occurred due to agro-economic and agro-technological factors, which are the determinants of the revealed general trend. The temporal trend of rapeseed yield in most administrative districts can be described by a fourth-degree polynomial, namely, its characteristic points enabled us to describe and interpret the dynamics of rapeseed yields. The absolute term of the polynomial shows the initial conditions of the process, and its mapping allows us to identify the areas with the most favorable soil-climatic conditions for the rapeseed cultivation. Indicators of the maximum rate of growth and decrease of yields are the markers of stability of agro-ecosystems to the external influences. Therefore, the mapping of the maximum rate of decline and increase of yields reveal areas in which yields respond rapidly (increasing / falling) to the changes in agro-economic and agro-technological conditions, as well as areas where yields are more stable and change gradually. Thus, the form of the yield trend is determined by the influence of agro-technological and agro-economic factors, whose contribution to the fluctuation in rapeseed yields varies from 53% to 90%.

Key words:

, , , , , ,




51-58 R. Sestras, E. Tamas, D. Pamfil, L. Mihalte,A. Sestras, L. Chis and C. Qin
The influence of the genotype upon the in vitro and in vivo growth of greenhouse carnations
Abstract |

The influence of the genotype upon the in vitro and in vivo growth of greenhouse carnations

R. Sestras¹, E. Tamas¹, D. Pamfil¹, L. Mihalte¹,A. Sestras², L. Chis² and C. Qin³

¹University of Agricultural Sciences and Veterinary Medicine, Faculty of Horticulture, 3-5Manastur St., 3400 Cluj-Napoca, Romania, e-mail: rsestras@usamvcluj.ro
²Horticultural Research Station, 3-5 Horticultorilor St., Cluj-Napoca, Romania
³School of Life Science, Shanghai University, Shanghai, 200436, China

Abstract:

Carnations are familiar, widespread, and are among the most popular cut flowers. There is great diversity of greenhouse cultivars belonging to Dianthus caryophyllus L, habitually multiplied through cuttings or micro-propagation. In order to establish whether or not there is a connection between the vigour of the plants technically mature from the greenhouse and their in vitro growth, several traits of greenhouse carnation, grown both in vivo and in vitro were analysed in five cultivars (Polka, Tanga, Dark Tempo, Delphi and Indios). The influence of the genotype upon the vigour of the plants and upon the characteristics of the greenhouse flowers, as well as upon some features of the in vitro growth of the plantlets, was significant. The variability under in vivo conditions ranged from 5.0 to 17.8%, while the characteristics analysed in vitro showed a large span of variability values (s% = 7.9–51.0). Overall, the heritability showed high values for the analysed characteristics, both under in vivo (H2 = 0.660–0.949) and in vitro (H2 = 0.502–0.946) conditions. No statistically ensured correlations were recorded between the plant growth under in vivo conditions and of those with the same genotype under in vitro conditions; therefore the greater vigour of some genotypes from the greenhouse did not imply their more accentuated growth in vitro. The cultivars conspicuous for their superior characteristics will be used as genitors within the improvement programmes and also recommended to be tested for inclusion in the Official Catalogue of Plants.

Key words:

, , , , , ,