scholarly journals Determination of Grafting Adaptation of Some Chestnut (Castanea sativa Mill.) Genotypes with Marigoule (C. Sativa × C. Crenata) Cultivar

Author(s):  
Şemsettin Kulaç ◽  
Hatice Nihan Nayır

In this study, to reproduce natural chestnut genotypes, the fruit characteristics of the Düzce region determined by local people are good in a healthy way, compatible with Marigoule (C. sativa × C. crenata) hybrid varieties resistant to branch cancer and root rot was investigated. In this study, 24 different chestnut genotypes were used. As the grafting method, the most commonly used tongue grafting, split grafting, chip budding grafting, and side grafting method were used. All procedures related to grafting were carried out in the greenhouses of the Düzce University Faculty of Forestry. In this study, local genotypes that are compatible with Marigoule chestnut were determined. As a result, the native genotype, which showed the best adaptation to Marigoule seedlings, was 87.5% of Yalnızçam, and after that, 79.2% of the Ereğli Sefer genotype. The lowest fit showed Broken genotype with 15% and Akçakoca1genotype with 17.5%. Besides, the compatibility of foreign varieties Maraval, Marigoule, and Betizac were also investigated. As a result, Betizac had the highest compatibility with 95%, while Maraval had 67.5%. The most successful in the grafting methods applied was the side graft (74.2%) followed by tongue grafting (59.9%), splitting grafting (51.4%), and chip budding grafting (29.7%).

Author(s):  
Miroslava Kačániová ◽  
Janka Sudzinová ◽  
Miriam Kádasi-Horáková ◽  
Magdaléna Valšíková ◽  
Stanislav Kráčmar

The plant-microbial interactive relations with respect to determination of the mycoflora of theCastanea sativaMill. nuts, crust, leaves and pollen and their effect on the host organism in four Slovak regions were studied. In the experiments were isolated 7 genera and 10 species of microscopic fungi from the nut, crust and leaves. It was found, that isolates from theCastanea sativaMill. pollen were represented by 8 genera and 11 species of microscopic fungi.Alternaria,Cladosporium,MucorandRhizopusappeared to be the most frequently occurring genera of nuts, leaves and crust.Acremonium,Alternaria,Cladosporium,Fusarium,PenicilliumandTrichodermaare the most frequently fungi of pollen. On the base of further taxonomic determination from the generaAspergilluswere isolated and identified representatives of speciesA. flavus,A. fumigatus,A. ochraceus,A. terreusandA. versicolor. From the generaFusariumwas isolatedF. oxysporumand fromPenicilliumgenera were isolatedP. crustosumandP. glabrum. It is necessary to underline that the isolated generaAspergillus,FusariumandPenicilliumare considered as the most important producers of mycotoxins.


2020 ◽  
Vol 1 (34) ◽  
pp. 65-77
Author(s):  
José Ramón Villar-García ◽  
Pablo Vidal-López ◽  
Antonio J. Corbacho ◽  
Manuel Moya

Holzforschung ◽  
2003 ◽  
Vol 57 (2) ◽  
pp. 189-195 ◽  
Author(s):  
B. Clair ◽  
J. Ruelle ◽  
B. Thibaut

Summary A range of mechanical and physical properties were determined for 96 specimens of chestnut wood and for wood types ranging from compression to tension wood; tests included (1) growth stress, (2) longitudinal Young's modulus in green and air-dried states (3) shrinkage in longitudinal and tangential directions. Anatomical observations permitted determination of the proportion of fibres with a gelatinous layer. The influence of these atypical fibres on macroscopic wood properties is examined and discussed. A basic model is proposed to determine their properties in theoretically isolated conditions.


2009 ◽  
pp. 63-68 ◽  
Author(s):  
I. Mujić ◽  
S. Dudaš ◽  
J. Živković ◽  
J. Tomin ◽  
Z. Zeković ◽  
...  

Forests ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 73
Author(s):  
Maurizio D’Auria ◽  
Marisabel Mecca ◽  
Maria Roberta Bruno ◽  
Luigi Todaro

Improvements in the yield and solubility of chestnut wood extractives, by using different extraction methods and molybdenum catalysts as support, have rarely been reported in literature. Many studies focus on the different parts of trees, except for the chemical characteristics of the remaining extractives achieved from thermally modified (THM) chestnut (Castanea sativa Mill) wood. This research seeks to better understand the effects of extraction techniques and catalysts on the yield and solubility of extractives. GC-MS analysis of the chloroform soluble and insoluble fractions was also used. Accelerated Solvent Extraction (ASE) 110 °C, Soxhlet, and autoclave extraction techniques were used to obtain extractives from untreated and thermally modified (THM) chestnut wood (170 °C for 3 h). Ethanol/H2O, ethanol/toluene, and water were the solvents used for each technique. A polyoxometalate compound (H3PMo12O40) and MoO3 supported on silica were used as catalysts. The THM induced a change in the wood’s surface color (ΔE = 21.5) and an increase in mass loss (5.9%), while the equilibrium moisture content (EMC) was reduced by 17.4% compared to the control wood. The yields of the extractives and their solubility were always higher in THM and mainly used ASE as the technique. GC-MS analysis of the extractives, without catalyst support, showed different results for each extraction technique and type of wood (untreated and THM). Ultimately, the amount of extractive compound dissolved in each solvent will differ, and the choice of extraction technique will depend on the intended final application of the extracted chemical product.


Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 231
Author(s):  
Mariam Gaidamashvili ◽  
Eka Khurtsidze ◽  
Tamari Kutchava ◽  
Maurizio Lambardi ◽  
Carla Benelli

An optimized cryopreservation protocol for embryonic axes (EAs) of chestnut (Castanea sativa Mill.) has been developed based on the encapsulation–vitrification procedure. EAs of mature seeds were aseptically dissected and encapsulated in alginate beads with or without 0.3% (w/v) activated charcoal (AC). Embedded EAs were dehydrated with Plant Vitrification Solution 2 for different treatment times up to 120 min, followed by direct immersion in liquid nitrogen. Cryopreserved embryonic axes encapsulated with AC showed higher survival (70%) compared to those encapsulated without AC (50%). Sixty-four percent of embryonic axes, from synthetic seeds with AC, subsequently developed as whole plants. Plantlet regrowth was faster in AC-encapsulated EAs and showed enhanced postcryopreservation shoot and root regrowth over 2 cm after five weeks from rewarming. Results indicate that encapsulation–vitrification with activated charcoal added to the beads is an effective method for the long-term preservation of Castaneasativa embryonic axes.


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