Találati lista | Tudóstér

001-es BibID:	BIBFORM135278
Első szerző:	Ábri Tamás (ültetvényszerű fatermesztés, növénytermesztés, növényvédelem)
Cím:	Growth and multispectral analysis of new Black Locust (Robinia pseudoacacia L.) clones / Tamás Ábri, József Csajbók, Zsolt Keserű, Gergely Szabó, Loránd Szabó
Dátum:	2026
ISSN:	1999-4907
Megjegyzések:	Black locust (Robinia pseudoacacia L.) breeding is an important component of plantation forestry in Central and Eastern Europe; however, clone trials are still mainly evaluated using conventional field surveys, and the application of high-resolution red-edge satellite indices at the intraspecific level remains rarely applied. As a result, less information is available on the phenological status of black locust clones derived from red-edge satellite data. This study evaluates a clone trial established in Eastern Hungary on slightly acidic Arenosol soil, assessing the growth performance and seasonal spectral dynamics of newly bred black locust clones during their fifth growing season by integrating field measurements with PlanetScope-derived Normalized Difference Red-Edge Index (NDRE) time series. Clone NK2 exhibited the most vigorous growth, reaching a mean height of 11.1 - 0.15 m and a diameter at breast height (DBH) of 11.21 - 0.19 cm, which were 35.4% greater in height and 19.0% larger in DBH than those (8.2 - 0.12 m height, and 9.42 - 0.23 cm diameter) of the control (♭Üllői' cultivar). Clone PL251 also exceeded the control by 25.6% in height and 19.2% in DBH. Spectral analysis (NDRE value - standard error) revealed marked differences in phenological development: in the early stage (April 15), NK1 and PL040 had the highest NDRE values (0.472 - 0.020 and 0.461 - 0.019), whereas NK2 showed delayed leaf emergence (0.398 - 0.019). By June 21, PL251 had reached an NDRE value of 0.692 - 0.013, which was higher than that of the control (0.673 - 0.016). In mid-July, NDRE peaked for NK2 and NK1 (0.732 - 0.012 and 0.731 - 0.013), with ♭Üllői' showing consistently lower values across the season. In the final stage, NK2 maintained the highest NDRE values (October 22: 0.618 - 0.015; November 9: 0.466 - 0.021), indicating prolonged photosynthetic activity, while NK1 and ♭Üllői' declined earlier (e.g., November 9: 0.354 - 0.018 and 0.390 - 0.027, respectively). These findings highlight NK2 and PL251 as superior candidates for high-yield, climate-resilient tree plantations because of their strong growth and extended physiological activity.
Tárgyszavak:	Agrártudományok Erdészeti és vadgazdálkodási tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk PlanetScope spectral index NDRE black locust improvement
Megjelenés:	Forests. - 17 : 2 (2026), p. 1-13. -
További szerzők:	Csajbók József (1964-) (agrármérnök) Keserű Zsolt (agrár) Szabó Gergely (1975-) (geográfus) Szabó Loránd (1991-) (geográfus)
Pályázati támogatás:	TKP2021-NKTA-43 Egyéb TKP2021-NKTA Egyéb NKFI K 138079 Egyéb NKFI ADVANCED 152950 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM114400
035-os BibID:	(WoS)001145288900001 (Scopus)85172721878
Első szerző:	Ábri Tamás (ültetvényszerű fatermesztés, növénytermesztés, növényvédelem)
Cím:	Differences in the Growth and the Ecophysiology of Newly Bred, Drought-Tolerant Black Locust Clones / Tamás Ábri, Attila Borovics, József Csajbók, Elza Kovács, András Koltay, Zsolt Keserű, Károly Rédei
Dátum:	2023
ISSN:	1999-4907
Megjegyzések:	In this study, the growth and physiological performance of four newly bred black locust (Robinia pseudoacacia L.) clones ('NK1', 'NK2', 'PL040', 'PL251') together with one registered in Hungary ('& Uuml;ll & odblac;i') were monitored and compared in a field experiment located in the dry temperate climatic zone of Eastern Central Europe. Tree height and diameter at breast height were measured monthly during May-August 2022, an extremely dry period. Ecophysiological parameters such as leaf temperature, vapor pressure deficit, intercellular carbon dioxide level, transpiration and assimilation rates, and stomatal conductance to water and CO2 were measured in situ. There was a high clonal effect on survival rate and growth of the trees and on the physiological parameters. 'NK1' performed best regarding height (1.88 m), while 'PL040' (23.76 mm) had the highest diameter increment (n = 16-26). The highest carboxylation efficiency was found in 'NK2' (0.077 mu mol m(-2) s(-1)), while the lowest was in 'NK1' (0.035 mu mol m(-2) s(-1)), not showing a significant difference from the '& Uuml;ll & odblac;i'. Water-use efficiency values were found to be the highest in 'NK2' and '& Uuml;ll & odblac;i' (4.92 and 4.78 kg m(-3), respectively). C-i was found to be maximum in 'NK1' and 'PL040' (286.15 and 287.37 mu mol mol(-1), respectively), while it was minimum in '& Uuml;ll & odblac;i' (248.30 mu mol mol(-1)). Physiological parameters were found to be significantly different in the clones due to their genetic differences. A strong positive correlation was found between the transpiration and the assimilation rates (r = 0.843-0.994). Within the growing period, the loss of leaves due to abiotic stress was 0 for 'NK1' and negligible for the others. 'NK2' stood out among the other clones in most of the parameters tested (height, thickness, assimilation, WUE). In addition to its high photosynthetic intensity, its water-use efficiency was also high.
Tárgyszavak:	Agrártudományok Erdészeti és vadgazdálkodási tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Forests. - 14 : 9 (2023), p. 1-19. -
További szerzők:	Borovics Attila Csajbók József (1964-) (agrármérnök) Kovács Elza (1976-) (okleveles vegyész, angol-magyar szakfordító, anyagmérnök MSc) Koltay András Keserű Zsolt (agrár) Rédei Károly (1952-) (erdőmérnök)
Pályázati támogatás:	TKP2021-NKTA-43 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM100275
035-os BibID:	(WoS)000850373000001 (Scopus)85124689180
Első szerző:	Ábri Tamás (ültetvényszerű fatermesztés, növénytermesztés, növényvédelem)
Cím:	Comparison of Juvenile, Drought Tolerant Black Locust (Robinia pseudoacacia L.) Clones with Regard to Plant Physiology and Growth Characteristics in Eastern Hungary: Early Evaluation / Tamás Ábri, Zsolt Keserű, Attila Borovics, Károly Rédei, József Csajbók
Dátum:	2022
ISSN:	1999-4907
Megjegyzések:	(1) Background: The aim of our study is to present the results of initial growth and plant physiology studies of newly selected, vegetative propagated black locust clones, with a view to assess their suitability for the establishment of fast growing tree plantations for the production of high quality timber in marginal (semi-arid) sites. (2) Methods: In the spring (May) and autumn (November) of 2021, full inventories were carried out in the black locust industrial tree plantation. The Normalized Difference Vegetation Index (NDVI) values were observed monthly from May to September 2021. For measuring the assimilation parameters the net assimilation, transpiration, stomatal conductance, intercellular CO2 concentration, and other physiological parameters were recorded. (3) Results: Robinia pseudoacacia 'NK2' clone showed the highest assimilation rate and it produced the most height increment in the growing season, from May 2021 to November 2021. The discriminant analysis classified successfully the black locust clones, 86.7% of original grouped cases were correctly classified. (4) Conclusions: The study of industrial tree plantations is of great practical importance. As black locust can tolerate even marginal site conditions, the lack of timber can be reduced in the future by establishing black locust industrial tree plantations. To be able to produce good quality industrial wood on the plantations, it is essential to study the phytophysiological properties of the trees (biomass production, vegetation activity of plants, chlorophyll content, photosynthetic activity) in addition to the traditional stand full inventories.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk black locust clones drought tolerant plant physiology growth characteristics
Megjelenés:	Forests. - 2022 : 13 (2022), p. 1-15. -
További szerzők:	Keserű Zsolt (agrár) Borovics Attila Rédei Károly (1952-) (erdőmérnök) Csajbók József (1964-) (agrármérnök)
Pályázati támogatás:	TKP2021-NKTA-43 Egyéb NKFI RH/527-1/2021 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: