| Gene banks for wild and cultivated sunflower genetic resources S Terzić, MC Boniface, L Marek, D Alvarez, K Baumann, V Gavrilova, ... Not Available, 2020 | 33 | 2020 |
| Mutant sunflower line R 12003, produced through in vitro mutagenesis J Encheva, P Shindrova, V Encheva, D Valkova Helia 35 (56), 19-30, 2012 | 14 | 2012 |
| Characterization of the yield components of sunflower lines under the conditions of North-East Bulgaria G Georgiev, V Encheva, N Nenova, P Peevska, Y Encheva, D Valkova, ... Scientific Works 3 (1), 121-131, 2014 | 13 | 2014 |
| Breeding of Sunflower (Helianthus annuus L.) at Dobrudzha Agricultural Institute–General Toshevo G Georgiev, V Encheva, Y Encheva, N Nenova, D Valkova, P Peevska, ... Journal of Agricultural, Food and Environmental Sciences, JAFES 72 (2), 15-22, 2018 | 10 | 2018 |
| Production potential of new sunflower hybrids developed at Dobrudzha Agricultural Institute-General Toshevo G Georgiev, V Encheva, N Nenova, Y Encheva, D Valkova, P Peevska, ... Proc. of 19th Intern. Sunfl. Conf., Edirne, Turkey, 441-453, 2016 | 10 | 2016 |
| Sunflower mutations, produced by ultrasonic treatment of immature embryos of cultivated genotype 147 R J Encheva, D Valkova, P Shindrova Bulgarian Journal of Agricultural Science 19 (3), 578-583, 2013 | 9 | 2013 |
| Promising lines as a result from interspecific hybridization between cultivated sunflower (Helianthus annuus L.) and the perennial species Helianthus ciliaris N Nenova, D Valkova, J Encheva, N Tahsın Türk Tarım ve Doğa Bilimleri Dergisi 1 (Özel Sayı-2), 1654-1659, 2014 | 8 | 2014 |
| Application of classical methods at sunflower breeding program in Dobroudja Agricultural Institute General-Toshevo J Encheva, G Georgıev, N Nenova, D Valkova, G Georgıev, P Peevska, ... Türk Tarım ve Doğa Bilimleri Dergisi 1 (Özel Sayı-1), 673-681, 2014 | 8 | 2014 |
| Sources for resistance to the leaves pathogens caused grey (Phomopsis helianthi), brown (Alternaria sp.) and black (Phoma macdonaldii) spots on sunflower originated from the … V Encheva, D Valkova, G Georgiev, M Christov Proc. of 18th International Sunflower Conference, Mar del Plata, Argentina, 2012 | 8 | 2012 |
| Characterization of F1 plants obtained from crosses between cultivated sunflower and wild annual Helianthus annuus D Valkova, M Christov Proc. 16th Int. Sunflower Conf., Fargo, ND, USA, 747-750, 2004 | 8 | 2004 |
| Developing Sunflower Hybrid Cultivars with Increased Productivity, Resistant to Disease and Broomrape Using Classical and Biotechnological Methods M Christov, A Piskov, J Encheva, D Valkova, M Drumeva, N Nenova, ... Sci.-Tech. Bull. IOC 14, 74-87, 2009 | 7 | 2009 |
| Reaction of some annual and perennial sunflower species of genus Helianthus to the cause agent of gray spots on sunflower V Encheva, D Valkova, M Khristov | 7 | 2006 |
| Sunflower lines and hybrids, resistance to economic important for Bulgaria pathogens, developed by applying classical and biotechnological methods. Balkan Agriculture Congress … V Encheva, J Encheva, N Nenova, D Valkova, G Georgiev, P Peevska, ... Turkish Journal of Agricultural and Natural Sciences. Sp, 1254-1257, 2014 | 6 | 2014 |
| Developing of sunflower lines and hybrids resistant to herbicides J Encheva, G Georgiev, N Nenova, D Valkova PLANT SCIENCE 52 (4), 2014 | 6 | 2014 |
| Creating new sunflower forms and lines, resistant to diseases, the broomrape parasite M Christov, M Hristova-Cherbadzi, V Encheva, P Sindrova, I Kiryakov, ... Proc. Int. Symp.“Sunflower breeding on Resistance to diseases” Krasnodar …, 2010 | 6 | 2010 |
| Development of sunflower hybrids resistant to herbisides J Encheva, G Georgiev, D Valkova, V Encheva Proc. of 19th Intern. Sunfl. Conf., Turkey, Edirne, 465-473, 2016 | 5 | 2016 |
| Characteristics of some hybrid progenies produced by crossing of Helianthus annuus L. with H. maximiliani SCHRADER M Hristova-Cherbadzi, M Christov, D Valkova international symposium on sunflower genetic resource. Turkey, 29-42, 2011 | 5 | 2011 |
| New sunflower forms and hybrids, resistant to herbicides M Christov, G Sabev, D Valkova, M Hristova-Cherbadzi Proceedings of the International Conference “Conventional and Molecular …, 2008 | 5 | 2008 |
| Study on the reaction of Helianthus debilis accessions to Phomopsis helianthi Munt.-Cvet M Petrova, V Encheva, D Valkova Field Crops Studies 14 (4), 137-142, 2021 | 4 | 2021 |
| Analaysis of impotant indices in new bulgarien hybrids Linzi and Deveda N Nenova, D Valkova, E Penchev IJAAR 3 (3,504-509), 2019 | 4 | 2019 |
