Research aim was to test the tolerance of a range of sunflower lines to infectious pressure of the main endemic pathogens Phomopsis helianthi and Phoma macdonaldi under soil and climat conditionsfrom Didactic Station of U.S.A.M.V.B. Timişoara. Stage of research is advanced taking in consideration that the experience is consist from a trial of 32 sunflower lines. Technology was the standard applied in the Western Plain of Romania for sunflower. It is well-known that the area where the experimental field was implemented is the target of a few sunflower endemic pathogens which produce crop losses every year, two of this are Phomopsis helianthi and Phoma macdonaldi. By the present paper we try to draw the attention to the lack of genetic material at the present hybrids assortment with vertical resistance to this pathogens. All this underline the importance of a new technology for sunflower, a technology which must bring some efficient measures to fight against this sunflower endemic pathogens. The novelty for this experience is that of presentation of some new sunflower lines with a promising tolerance at the pathogens. Also the work bring important data for agricultural practice in the experimental area. As achievement in this work are underlined the possible reactions of the pathogens in direct coordination with local soil and climatic factors. Limits of the research are draw by the limited data from only one year of observations. Practical implications of the research consisted of playing a part of a complex study of strategy in the sunflower protection. The originality of the work comes from the fact that data are relevant in order of the uniformity of lines origin and because of this, the data provided are useful for the Monsanto producers in the management and breeding strategies.  Importance of the paper became from bringing in front of the specialists some new promising sunflower biologic material for the near future. The relevance of data from experimental results give an overview of endemic pathogens behavior in relation to tested sunflower lines.

sunflower; pathogens; natural conditions

Presentation: oral