Performance test traits in Danube White pigs with different RYR, ESR and FUT1 genotypes

The aim of the present investigation was to evaluate the effect of the implementation of RYR, ESR and FUT1 genes in marker assisted
selection on the currently performed selection for own productivity. A total of 205 female and 32 male Danube White pigs were tested for polymorphism of
RYR, ESR and FUT1 loci Blood samples were obtained from the orbital sinus. Genotypes were determined in the Laboratory of Applied Molecular
Genetics according of loci (LAMGen) at the Department of Genetics, Mendel University of Agriculture and Forestry in Brno, Czech Republic using PCRRFLP.
Data from the phenotype test of pigs were analyzed including backfat thickness (CKL2) and age at 90 kg live weight depending on the genotypes
of studied loci. The marker assisted selection for RYR, ESR and FUT1 genes, have no negative effect on phenotype test traits (backfat thickness and
growth performance). For the FUT1 gene however, the relationship of the favourable A allele to the deposition of more backfat should be evaluated in a
larger number of pigs, as in our study, we have observed such a tendency.

Performance test traits in Danube White pigs with different RYR, ESR and FUT1 genotypes

S. Stoyanova

Genotype x Environment Interaction and Stability Analysis of Some Narbonne Vetch (Vicia narbonensis L.) Genotypes

The objectives of this research are to determine genotype x environment interactions and stability of seed yield and some plant characters of
Narbonne vetch (Vicia narbonensis L). Thirteen Narbonne vetch genotypes were grown at two different locations during 2000-2002 years. This research was
carried out as randomised completed block design with three replications. Significant differences were found (P≤0.01) among Narbonne vetch genotypes for
plant height (57.54-77.98 cm), pod number per plant (10.97-20.09), and seed yield per plant (7.22-22.64 g). Genotype x environment interaction was found to
be significant (P≤ 0.01) in all investigated characters. Mean values of genotypes (x), regression coefficient (b) and deviation from regression (S2d) were i
evaluated as stability parameters. According to stability analyses, genotype 133 and 600 showed upper performance about seed yield per plant in two
locations. On the other hand, genotypes I would recommend for suitable locations which were loamy and limy soils and rainy and cool season climatic
conditions.

Genotype x Environment Interaction and Stability Analysis of Some Narbonne Vetch (Vicia narbonensis L.) Genotypes

A. Orak, I. Nizam

Application of different nacl concentrations on seed germination of flax (linum usitatissimum l.) Cultivar

This investigation was conducted at the Field Crops Department, Agriculture Faculty, Namik Kemal University Tekirdag, Turkey. The present
research has studied the effects of NaCl of different concentrations on some characteristics of germination of flax. One flax (Linum usitatissimum L.) variety
(Raulin) has been studied under four salinity treatments, including, 0, 50, 100 and 150 mM in the laboratory conditions. In the experiments, germination rate,
plant fresh weight, hypocotyl and radicula length for all genotypes were decreased at the increase of salt dose. The evaluated flax variety was significantly
different for germination speed and radicula length. Although the highest germination speed was recorded in 100 mM (100.0 %), 0 mM and 50 mM salt doses
had the highest values for hypocotly and radicula length.

Application of different nacl concentrations on seed germination of flax (linum usitatissimum l.) Cultivar

S. Yaver, C. Pasa

Predicting the increase of pest infestation in storage of freshly harvested wheat

Simulation models have been developed for predicting rice weevil Sitophilus oryzae (L.) and sawtoothed grain beetle Oryzaephilus (L.) population
growth in flat storehouses and steel bins with great capacity. The validity of simulation models is from 78% to 95% for both species of insect pests and both
granaries. On the basis of these models, the increase of density has been predicted after infestation detection of 0.5 insects per kg at different time of storage
from 1 September to 15 November (every 15 days). The highest level of infestation is possible to reach 387 and 194 insects per kg in steel bin and 8 and 2
insects per kg in flat storehouse for S. oryzae and O. surinamensis, respectively. The predicted results have been confirmed by monitoring infestation change of
the more dangerous insect pest, S. oryzae, in freshly harvested wheat stored in steel bins and flat storehouses, during two consecutive years – 2003 and 2004
in two farms.

Predicting the increase of pest infestation in storage of freshly harvested wheat

D. Kuzmanov, N. Dimitrov

Tomato leaf miner, Tuta absoluta (Povolny) (Lepidoptera: gelechiidae) – first record in Bulgaria

The tomato leaf miner Tuta absoluta (Povolny) is the most damaging pest of tomatoes in South America. In 2006 the pest was introduced by accident
in Spain and since then it has invaded many countries in South Europe and the Mediterranean region. In 2009 there were official reports for new invasions from
Greece, Switzerland, Malta, Portugal, Albania, France, Italy, Libya and countries from the Gulf region – Bahrain and Kuwait. In Bulgaria the National Service of
Plant Protection (NSPP) undertook a national survey for the detection of the tomato leaf miner using pheromone traps. On 16 October 2009 an official
statement was published on the website of NSPP for the presence of the tomato leaf miner in several glasshouses and in the field in South Bulgaria. At a
glasshouse with tomatoes near Plovdiv we observed a severe infestation by the pest which has rapidly spread after the last treatment with pesticides at the end
of August. The leaves were the most heavily damaged plant parts with an average of 9.42 and 8.75 mines per leaflet on the middle and upper layer of the canopy
resp., followed by the fruits. No damage on the stems was observed. Description of the pest stages, behavior, monitoring, prevention and control of the pest are
discussed.

Tomato leaf miner, Tuta absoluta (Povolny) (Lepidoptera: gelechiidae) – first record in Bulgaria

V. Harizanova, A. Stoeva, M. Mohamedova

Loading of integrated fishponds with organic matter under different approaches of mule ducks (Anas platyrhynchos x Cairina moschata) feeding

The effect of the feeding regime of mule ducks on loading of fishponds with organic matter in integrated fish-cum-duck technology was studied at theInstitute of Fisheries and Aquaculture – Plovdiv. The stocking density of the ducklings was 340 pcs.ha-1. The coefficient of loading (Ì) was used for establishing the pond loading: where N is the mean number of ducks in the rotation; t – rotation length in days; W – average live weight of theducks for the growing period, kg; 96 g – the amount of the manure released for a day by one duck per kg of live weight ; P – pond surface area,ha; r – relative stay of the ducks in water out of the active time of days.Two regimes of feeding the mule ducks were studied. It was establishedthat when fed on a balanced mixture, the mule ducks spent the bigger part of the day on land, as a result of which during the period of the study(40 days) the manure inserted in the pond amounted to 74.7 kg.ha-1. Substituting 50 % of the mixture with wheat, maize or sunflower groats(preserving the energy and protein levels), led to prolonging the average length of stay of the mule ducks in the pond almost 8 times. Due to themore significant differences in the time spent in the pond during the last ten-day periods, the manure released into water increased by morethan 10 times, although the live weight in all the periods was lower compared to the first variant.

Loading of integrated fishponds with organic matter under different approaches of mule ducks (Anas platyrhynchos x Cairina moschata) feeding

L. Nikolova