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Neykov S.,Institute Of Plant Genetic Resources K Malkov | Veicheva N.,Institute Of Plant Genetic Resources K Malkov | Uzundzhalieva K.,Institute Of Plant Genetic Resources K Malkov | Neykov N.,Agricultural University of Plovdiv
Genetics and Breeding | Year: 2010

In the period 1980-2008, 788 lettuce accessions were introduced and studied at the Institute of Plant Genetic Resources in Sadovo, Bulgaria. Among them, 70% were of var capitata, originating mainly from Holland and England as well as from Germany, Czech Republic, Russia, Italy, USA, Romania, etc. The investigation was made at several stages and the local forms (38) were collected by collecting missions, and lines (80) -obtained through individual and mass selection mainly of cultivars and populations developed by spontaneous intercultivar hybridization. By dispersion analyses the rate of variation of the indexes is established. To prove the correlation between 17 quality indices and their influence on the mass of the head, as well as between them, correlation indexes are calculated. They were used to establish the regression equation for the mass of the head and the indications which influence them by using the step analyses. High variation quality characters of Lactuca sativa L. are the mass of the head, height of the flower stem, germination -blossom start and germination -economical ripeness. With lower variation are the diameter, height of the head and the dry substance content. There is a direct correlation between the mass of the head and the height (r=0.47) and the diameter of the rosette (r=0.47), as well as the height and the diameter of the head and length and width of leaves (r=0.29-0.43).


Simeonovska E.,Institute of Agriculture | Gadzo D.,Zmaja od Bosne 8 | Jovovic Z.,Blvd. Mihaila Lalica 1 | Murariu D.,Suceava Genebank | And 11 more authors.
Romanian Agricultural Research | Year: 2012

Within the framework of South East European Development Network on Plant Genetic Resources program, collecting missions in twelve countries were conducted under the regional project "Collecting local landraces of maize and cereals (wheat, barley, rye, oat, millet and buckwheat) in South Eastern Europe (2009- 2010)". The main goal of this project was preservation of local landraces of maize and cereals in the participating countries with the aim to make them available for breeding, research and other purposes at national, regional and international level. The project participants were the national teams from Macedonia (as project coordinator), Federation Bosnia and Herzegovina, Montenegro, Romania, Republic of Serbia, Kosovo, Croatia, Albania, Serbia, Slovenia, Moldova and Bulgaria. Each national team carried out the collecting missions in its own country. During 2009 and 2010, over 589 localities were inventoried in the predicted regions. The result of the project was a total number of 867 maize and cereals accessions collected. Maize prevailed with the total number of 637 collected accessions (73.47%), followed by 47 wheat accessions (5.42%), then barley 43 (5.07%), rye 40 (4.61%), oat 52 (5.99%), millet 8 (0.92%), buckwheat 9 (1.02%) and other species (Sorghum sp., Triticum monococcum, Triticum spelta, Triticum turanicum, einkorn) 31 accessions (3.58%). Regarding the status of the samples, accessions are mainly landraces, which are still grown by some farmers and used as a source of high quality animal and human food.


Antonova N.,Institute Of Plant Genetic Resources K Malkov | Rachovska G.,Institute Of Plant Genetic Resources K Malkov
Bulgarian Journal of Agricultural Science | Year: 2010

A study was carried out on 25 parameters of mutant lines of spring naked oats cv. Mina, obtained by seed treatment. The mutant lines M 15/2, M 20/23, Mx 5/18 and Mx 20/56, obtained after gamma irradiation (in doses of 150 and 200 Gy) as well as treatment with natrium azide 0.10 mM and 10 mM, excelled the standard Mina in terms of grain yield, length, width and area of the flag and second leaves. They were characterized with shorter stem and early ripening. The used mutagenic factors and doses gave a reason to predict higher grain yields, when the area of the flag leaf was about 38 cm2 and second leaf - 55 - 62 cm2.


Boyadjieva D.,Institute Of Plant Genetic Resources K Malkov | Andonov B.,Institute Of Plant Genetic Resources K Malkov
Bulgarian Journal of Agricultural Science | Year: 2010

The morphological and physiological parameters of T. aestivum L. and their integration with yield were studied in order to identify more effective criteria for the genetic improvement of new cultivars in dry climatic conditions. The tested varieties were developed at the Institute of Plant Genetic Resources in Sadovo in the period 1948-2005. Cultivar N 301, widespread in 1948, was used as control. A field trial was carried out in 3 replications in 2006, 2007 and 2008. Plant and leaf parameters were analyzed as well as yield and duration of the vegetation period. Variability and genetic gain of the studied indexes were identified. A computer software package was used for variation, correlation and regression analysis. It has been established that the preservation of canopy and leaf mass for up to 10 days after ear growth is most important for yield increase in the dry conditions of Central South Bulgaria. At the same time, the correlation coefficient of yield and foliage area of one plant during heading was high and statistically proven. The same was true about canopy per unit of land, the area of one leaf and the area of the flag leaf. The semi-planophyl flag leaf was optimal for the specific conditions of the trial and its width was in positive correlation with the yield. Yield increase was parallel to the shortening of the vegetation period.


Desheva G.,Institute Of Plant Genetic Resources K Malkov | Stoyanova S.,Institute Of Plant Genetic Resources K Malkov | Kolev K.,Institute Of Plant Genetic Resources K Malkov
Journal of Central European Agriculture | Year: 2010

Seeds of three winter wheat bread cultivars (Triticum aestivum L.): Sadovo 1, Sadovo 772 and Katya, and three durum wheat cultivars (Triticum durum Desf): Progress, Vazhod and Beloslava were used. The accessions have been submitted to sorbtion drying to low moisture content (water activity aw = 0,116). No essential changes were observed in the initial seedling growth. In evaluation of peroxidase isozyme spectra of seedlings no significant changes were detected as a result of sorption drying to low seed moisture and subsequent storage at -18°C. Field evaluation of the main structural plant yield elements uncovered no statistically significant unfavorable effects on the regeneration capacity of wheat seeds as a result of drying (water activity aw = 0,116) and cool storage (-18°C).

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