scholarly journals Effects of seed origin, growing medium and mini-plug density on early growth and quality of black locust (Robinia pseudoacacia [L.]) seedlings

2012 ◽  
Vol 58 (No. 1) ◽  
pp. 8-20 ◽  
Author(s):  
O. Dini-Papanastasi ◽  
P. Kostopoulou ◽  
K. Radoglou
Keyword(s):  
Quantum Yield ◽  
Black Locust ◽  
Growth Traits ◽  
Robinia Pseudoacacia ◽  
Dry Mass ◽  
Second Phase ◽  
Effective Quantum Yield ◽  
Growing Medium ◽  
Seed Origin ◽  
Robinia Pseudoacacia L

The objective of this study was to identify optimal growing conditions for the production of high-quality mini-plug seedlings of black locust (Robinia pseudoacacia [L.].). Two seed origins (Greek and Hungarian), two growing media (enriched peat and stabilized medium) and four mini-plug densities (975; 1,460; 1,820 and 3,500&nbsp;mini-plugs&middot;m<sup>&ndash;2</sup>) were tested in two phases, in growth chambers and in a nursery after transplanting the mini-plugs into larger containers. Measurements included seedling survival, growth traits (root length, shoot height, leaf area, root dry mass, shoot dry mass, root/shoot ratio) and root growth potential (RGP). In addition, the ratio of variable to maximal fluorescence (F<sub>v</sub>/F<sub>m</sub>) and the effective quantum yield of photosystem II (&Delta;F/F&rsquo;<sub>m</sub>) were measured. It was found that growing medium produced significant effects mainly in the first phase and seed origin in the second phase while mini-plug density was important in both phases. The F<sub>v</sub>/F<sub>m </sub>ratio was found to be significantly affected by growing medium while the effective quantum yield was influenced by density. Early survival of seedlings was closely correlated with fluorescence and growth traits (particularly with plant height) suggesting that these parameters might be useful for the grading of black locust seedlings prior to transplanting. &nbsp; &nbsp;

scholarly journals Black locust (Robinia pseudoacacia L.) energy plantations in Hungary

1999 ◽  
Vol 64 ◽  
Author(s):  
K. Rédei
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Dry Mass ◽  
Fuel Production ◽  
Annual Increment ◽  
Sand Soil ◽  
Yield Trial ◽  
The Common ◽  
Energy Plantations ◽  
Robinia Pseudoacacia L

Establishment  of plantations primarily for fuel production has been of international  interest for    many years. Energy fuel production experiments in Hungary have been  conducted for a longer    time. In the country the black locust (Robinia  pseudoacacia L.) is one of the most  important    stand - forming tree species, covering approximately 20% of the forested  lands and providing    about 18% of the annual timber output of the country. In Helvecia (central  Hungary, sand-soil    region) an energy plantation was established using common black locust and  its cultivars. The    spacing variations of the common black locust were the followings: 1.5x0.3  m, 1.5x0.5 m and    1.5x1.0 m. At the age of 5 the closest spacing (1 .5xO.3 m) produced the  greatest annual increment in oven-dry mass (6.5 t/ha/yr). This exceeds the increments of the two wider spacings    by 33% and 51 %, respectively. Concerning to the results of the yield trial  with black locust cultivars planted in spacing of 1.5x1.0 m, at the age of 5 the highest yield was produced by the    cultivar 'ÜllDi' (8.0 t/ha/yr), followed by 'Jaszkiseri' (7.3 t/ha/yr) and  the common black locust (6.7    t/ha/yr).

scholarly journals Trees, seeds and seedlings analyses in the process of obtaining a quality planting material for black locust (Robinia pseudoacacia L.)

2020 ◽  
Vol 12 (4) ◽  
pp. 940-958
Author(s):  
Andrea M. ROMAN ◽  
Irina M. MORAR ◽  
Alina M. TRUȚA ◽  
Cătălina DAN ◽  
Adriana F. SESTRAȘ ◽  
...  
Keyword(s):  
Black Locust ◽  
Growth Traits ◽  
Seedling Emergence ◽  
Robinia Pseudoacacia ◽  
Basal Area ◽  
Tree Height ◽  
Forest Tree ◽  
Planting Material ◽  
Field Coefficient ◽  
Robinia Pseudoacacia L

Black locust (Robinia pseudoacacia L.) was among the first North-American tree species imported in Europe. In Romania, black locust has established itself as a forest tree appreciated for multiple uses. The objective of the hereby study was to identify a quality planting material at black locust using seeds from trees with superior traits from five stands geographically close, located in North-western of Romania. An empirical selection was done, thus trees with the most favourable traits were selected as plus trees. Among the averages of the main traits (tree height, diameter at breast height, basal area, self pruning trunk length, crown diameter) of the plus trees from the five stands, there were registered significant differences, and two stands stood out with a high biomass growth. Even if the stands had different ages (between 20-35 year), the age did not influence significantly the growth traits of the trees. The seeds of the plus trees (open-pollinated) from all the stands had large size (mean seed weight of 0.057 g/seed). The seedling emergence rate was high, especially in the solarium condition (between 52.7-73.7% compared with 33.0-41.3% in the field). Coefficient of genetic correlation and heritability calculated for the seedlings belongings to half-sib families highlighted that black locust breeding can be extremely effective by a proper selection.

scholarly journals Propagation from root cuttings for black locust (Robinia pseudoacacia L.) improvement in Hungary: a review

2019 ◽  
Vol 25 (1-2) ◽  
Author(s):  
Zs. Keserű ◽  
K. Rédei ◽  
J. Rásó ◽  
T. Kiss
Keyword(s):  
Genetic Variation ◽  
Forest Management ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Clonal Forestry ◽  
Wood Production ◽  
The World ◽  
More Care ◽  
Improved Cultivars ◽  
Robinia Pseudoacacia L

Black locust (Robinia pseudoacacia L.) is a valuable stand-forming tree species introduced to Europe approximately 400 years ago from North America. Today it is widely planted throughout the world, first of all for wood production. In Hungary, where black locust has great importance in the forest management, it is mainly propagated by seeds. But since the seed-raised plants present a great genetic variation, this type of propagation can not be used for Robinia’s improved cultivars. In the Hungarian black locust clonal forestry, propagation from root cuttings can be used for reproduction of superior individuals or cultivars in large quantities. However, this method demands more care than raising seedlings from seeds and can be applied with success in well-equipped nurseries.

scholarly journals Productivity of black locust (Robinia pseudoacacia L.) stands on chernozem in Vojvodina

2014 ◽  
pp. 9-31
Author(s):  
Sinisa Andrasev ◽  
Savo Roncevic ◽  
Petar Ivanisevic ◽  
Sasa Pekec ◽  
Martin Bobinac
Keyword(s):  
Soil Type ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Diameter Growth ◽  
Sample Plot ◽  
Considerable Variability ◽  
Aeolian Sand ◽  
Breast Height ◽  
The Mean ◽  
Robinia Pseudoacacia L

This paper presents the elements of growth of black locust trees and stands in 15 sample plots in Vojvodina, at the age of 21-68 years. In each sample plot, based on soil profile horizons the determined soil type was chernozem as well as its lower systematic units (subtype, variety and form), according to the Skoric et al. (1985) classification. On the basis of the mean stand heights (hL), the stands on the subtype of chernozem on loess and loesslike sediments belong to height classes I-IV, and stands on calcareous aeolian sand to classes II-V (according to R e d e i et al. 2014), which indicates their considerable variability with respect to productivity within the determined subtypes of chernozem. Significant differences at the level of chernozem subtypes were found between the mean heights (p = 0.032), but not between the mean diameters (p = 0.083). The mean diameters at breast height in the studied black locust stands were on average lower than the models of diameter growth for the appropriate height classes and determined by a larger number of trees per hectare than in the tables (R e d e i et al, 2014). The volume per hectare is higher than in the tables also being conditioned by the large number of trees per hectare.

scholarly journals The Synergy of Arbuscular Mycorrhizal Fungi and Exogenous Abscisic Acid Benefits Robinia pseudoacacia L. Growth through Altering the Distribution of Zn and Endogenous Abscisic Acid

2021 ◽  
Vol 7 (8) ◽  
pp. 671
Author(s):  
Xiao Lou ◽  
Xiangyu Zhang ◽  
Yu Zhang ◽  
Ming Tang
Keyword(s):  
Abscisic Acid ◽  
Mycorrhizal Fungi ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Am Symbiosis ◽  
Antioxidant Defense Systems ◽  
Robinia Pseudoacacia L ◽  
Zn Stress

The simultaneous effects of arbuscular mycorrhizal (AM) fungi and abscisic acid (ABA) on the tolerance of plants to heavy metal (HM) remain unclear. A pot experiment was carried out to clarify the effects of simultaneous applications of AM fungi and ABA on plant growth, Zn accumulation, endogenous ABA contents, proline metabolism, and the oxidative injury of black locust (Robinia pseudoacacia L.) exposed to excess Zn stress. The results suggested that exogenously applied ABA positively enhanced AM colonization, and that the growth of plants only with AM fungi was improved by ABA application. Under Zn stress, AM inoculation and ABA application increased the ABA content in the root/leaf (increased by 48–172% and 92%, respectively) and Zn content in the root/shoot (increased by 63–152% and 61%, respectively) in AM plants, but no similar trends were observed in NM plants. Additionally, exogenous ABA addition increased the proline contents of NM roots concomitantly with the activities of the related synthases, whereas it reduced the proline contents and the activity of Δ1-pyrroline-5-carboxylate synthetase in AM roots. Under Zn stress, AM inoculation and ABA application decreased H2O2 contents and the production rate of O2, to varying degrees. Furthermore, in the roots exposed to Zn stress, AM inoculation augmented the activities of SOD, CAT, POD and APX, and exogenously applied ABA increased the activities of SOD and POD. Overall, AM inoculation combined with ABA application might be beneficial to the survival of black locust under Zn stress by improving AM symbiosis, inhibiting the transport of Zn from the roots to the shoots, increasing the distribution of ABA in roots, and stimulating antioxidant defense systems.

scholarly journals Black Locust (Robinia pseudoacacia L.) Root Cuttings: Diversity and Identity Revealed by SSR Genotyping: A Case Study

2015 ◽  
Vol 6 (2) ◽  
pp. 201-217 ◽  
Author(s):  
Maria Emilia Malvolti ◽  
Irene Olimpieri ◽  
Paola Pollegioni ◽  
Klára Cseke ◽  
Zsolt Keserű ◽  
...  
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Ssr Genotyping ◽  
Robinia Pseudoacacia L

scholarly journals Damage to black locust leaves (Robinia pseudoacacia L.) by the black locust gall midge (Obolodiplosis robiniae) (Haldeman, 1847) in the Włoszczowa-Jędrzejów Protected Landscape Area - research on strengthening and developing knowledge and awareness in environmental education

2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Jolanta Bąk-Badowska ◽  
Ilona Żeber-Dzikowska ◽  
Barbara Wodecka ◽  
Mariusz Gietka ◽  
Jarosław Chmielewski
Keyword(s):  
Nature Conservation ◽  
Environmental Education ◽  
Black Locust ◽  
Gall Midge ◽  
Robinia Pseudoacacia ◽  
Academic Community ◽  
Anthropogenic Factors ◽  
Research Areas ◽  
Robinia Pseudoacacia L ◽  
Developing Knowledge

Abstract The prepared article by the team of authors aims to show research in the field of strengthening and developing knowledge and awareness from environmental education in the community of nature conservation services and the academic community. This paper is the result of research conducted in 2014–2015, in the Włoszczowa-Jędrzejów Protected Landscape Area, in the Świętokrzyskie Province. The material for the study was acacia robinia (Robinia pseudoacacia L.) leaves collected on two research areas, differentiated due to the influence of anthropogenic factors. As a result of the study, 5,000 black locust leaves were collected, 65% of which were found to be damaged. Research stands under the influence of strong anthropopressure were characterised by a higher number of lesions on leaves.

scholarly journals Naphthenic acids - alternative rooting stimulators in black locust microshoots

2014 ◽  
pp. 7-13
Author(s):  
Branislav Kovacevic ◽  
Slavko Kevresan ◽  
Sasa Orlovic ◽  
Dragana Miladinovic ◽  
Vera Cirin-Novta ◽  
...  
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Forest Tree ◽  
Naphthenic Acids ◽  
Control Treatment ◽  
In Vitro Cultivation ◽  
Test Treatments ◽  
Robinia Pseudoacacia L ◽  
Positive Effect

The study describes the rooting effect of naphthenates and their fractions on in vitro grown Robinia pseudoacacia L. shoots. Natural naphthenic acids have been isolated by alkaline extraction from middle fraction of crude oil type ?Velebit? from Vojvodina, characterized and fractionated. Black locust shoot bases were immersed in ACM medium [Ahuja, 1984] without agar supplemented with either 10, 50 or 100 ?M of basic naphthenate preparation, naphthenate fractions obtained by extraction at different pHs (pH 2, pH 4, pH 7 and pH 9), or indole- 3-butyric acid (IBA). Treated shoots have been then grown on hormone-free medium for four weeks. Significant differences among test treatments were recorded during the third and the fourth week of in vitro cultivation. Final evaluation was performed on the basis of rooting percentage after four weeks of cultivation. The highest rooting percentage (>70%) was achieved after the treatment with solution containing 50 ?M of IBA. However, treatment with 10 ?M of naphthenate preparation achieved also positive effect on rooting (>60%). Average rooting percentage in the control treatment was just 45%. Our results with black locust confirm previous results gained with some other agricultural and forest tree species that naphthenates have the potential to stimulate rooting in shoots and cuttings.

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