TO THE PROBLEM OF STUDYING THE STATE OF POPULATION GENE POOL OF THE BURZYANSKY DARK FOREST BEES (APIS MELLIFERA MELLIFERA L.)

Author(s):  
M.G. Asikaev ◽  
G. G. Asylguzhin ◽  
R.R. Galin
Author(s):  
L.Z. Baistruk-Hlodan ◽  
M.M. Khomiak ◽  
G.Z. Zhapaleu ◽  
G.L. Koval

The goal was to include new accessions of perennial leguminous and cereal grasses to the collection, to evaluate them in terms of a set of valuable morphological and economic features and to identify sources of these features for breeding.Results and discussion. The collections of gene pool accessions created due to introduction of cultivars and wild forms as well as breeding accessions identified during practical breeding serve as initial material for the breeding of red clover, alsike clover and cock's-foot in the Institute of Agriculture of the Carpathian Region. For the period of 2000-2017, 944 accessions of forage grasses registered in the Central Database were included in the collection: 405 legumes (red clover – 161, alsike clover – 11) and 539 cereals (cock's-foot – 145); 591 accessions were stored in the National Depository. In-depth studies of morphological and economic traits of the accessions allowed us to create and to register a basic collection of the forage grasses gene pool, a trait collection of red clover for yield and resistance to powdery mildew (it includes 52 accessions from 5 countries), a trait collection of cock's-foot for yield and resistance to unfavorable factors (49 accessions from 8 countries) and to register valuable red clover accession No. 193 and cock's-foot accession Drogobychanka Piznia with the NCPGRU. Based on the collection accessions, varieties were created and included in the State Register of Plant Varieties Suitable for Dissemination in Ukraine: red clover Truskavchanka since 2016, alsike clover Prydnistrovska since 2002, cock's-foot Marichka since 2014. Since 2015, red clover variety Ukrainochka and cock's-foot variety Boikivchanka have been tested in the state scientific expert evaluation.Conclusions. The creation of the genetic resource collection allowed us to study and analyze the genetic potential of the species, to identify initial material with valuable economical traits, which will significantly increase the efficiency of fodder grasses breeding.


Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 216
Author(s):  
Matthieu Guichard ◽  
Benoît Droz ◽  
Evert W. Brascamp ◽  
Adrien von Virag ◽  
Markus Neuditschko ◽  
...  

For the development of novel selection traits in honey bees, applicability under field conditions is crucial. We thus evaluated two novel traits intended to provide resistance against the ectoparasitic mite Varroa destructor and to allow for their straightforward implementation in honey bee selection. These traits are new field estimates of already-described colony traits: brood recapping rate (‘Recapping’) and solidness (‘Solidness’). ‘Recapping’ refers to a specific worker characteristic wherein they reseal a capped and partly opened cell containing a pupa, whilst ‘Solidness’ assesses the percentage of capped brood in a predefined area. According to the literature and beekeepers’ experiences, a higher recapping rate and higher solidness could be related to resistance to V. destructor. During a four-year field trial in Switzerland, the two resistance traits were assessed in a total of 121 colonies of Apis mellifera mellifera. We estimated the repeatability and the heritability of the two traits and determined their phenotypic correlations with commonly applied selection traits, including other putative resistance traits. Both traits showed low repeatability between different measurements within each year. ‘Recapping’ had a low heritability (h2 = 0.04 to 0.05, depending on the selected model) and a negative phenotypic correlation to non-removal of pin-killed brood (r = −0.23). The heritability of ‘Solidness’ was moderate (h2 = 0.24 to 0.25) and did not significantly correlate with resistance traits. The two traits did not show an association with V. destructor infestation levels. Further research is needed to confirm the results, as only a small number of colonies was evaluated.


2016 ◽  
Vol 52 (3) ◽  
pp. 281-291 ◽  
Author(s):  
R. A. Ilyasov ◽  
A. V. Poskryakov ◽  
A. V. Petukhov ◽  
A. G. Nikolenko

Apidologie ◽  
1994 ◽  
Vol 25 (6) ◽  
pp. 513-519 ◽  
Author(s):  
Y. Le Conte ◽  
C. Bruchou ◽  
K. Benhamouda ◽  
C. Gauthier ◽  
J. M. Cornuet

2015 ◽  
Vol 9 (27) ◽  
pp. 1692-1698
Author(s):  
Patricia Alves Thais ◽  
Marta Carvalho dos Santos Tania ◽  
Cerqueira Cavalcanti Neto Cicero ◽  
Nicolas Beelen Roger ◽  
Georgia Mesquita da Silva Sybelle ◽  
...  
Keyword(s):  

2011 ◽  
Vol 50 (2) ◽  
pp. 116-129 ◽  
Author(s):  
Andrzej Oleksa ◽  
Igor Chybicki ◽  
Adam Tofilski ◽  
Jarosław Burczyk

2017 ◽  
Vol 15 (4) ◽  
pp. 41-51
Author(s):  
Rustem A. Ilyasov ◽  
Aleksandr V. Poskryakov ◽  
Aleksei G. Nikolenko

At least 30 subspecies of the honeybee Apis mellifera L. were formed allopatrically during the evolution, which spreaded throughout all Africa, Europe and West Asia. The dark forest bee Apis mellifera mellifera is the only and most valuable subspecies for the Northern and Western Europe countries, adapted to productive living in the hard-continental climate of Eurasia. In the past 100 years, natural geographical isolation of subspecies has been disrupted as a result of a human activities. Mass transportations of honeybee colonies beyond the boundaries of their area have been threatened of loss the identity of gene pool of subspecies as a result of hybridization. Preservation of the gene pool of subspecies is possible only when controlling the transportation of honeybee colonies using the methods of identification of taxonomic affiliation of honeybee colonies. Now, dozens of methods have been developed to identify the taxonomic affiliation of honeybee's colony, which are based on the variability of body parts, allozyme loci, mitochondrial DNA loci, microsatellite nuclear loci, sites of single nucleotide polymorphism (SNP). The variability of microsatellite loci and the single nucleotide polymorphism sites have shown the greatest informativeness in identification of the taxonomic affiliation of honeybee's colony.


2014 ◽  
Vol XX (3) ◽  
pp. 159-167 ◽  
Author(s):  
Carlos A. Medina-Flores ◽  
◽  
Ernesto Guzmán-Novoa ◽  
Laura G. Espinosa-Montaño ◽  
José L. Uribe-Rubio ◽  
...  
Keyword(s):  

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