engleski

Estimantion of sunflower breeding material tolerance on Diaporthe/Phomopsis helianthi

Phomopsis of sunflower [caused by Phomopsis helianthi Munt.-Cvet. et al. (teleomorph Diaporthe helinathi Munt.-Cvet. et al.)], is one of the principal sunflower diseases in the Republic of Croatia and Europe, as well, and has a great influence on grain and oil yield. Hence, in the framework of the sunflower breeding program at the Agricultural Institute Osijek, one of the main objectives is work on the resistance to this and other principal pathogens. Although sunflower (Helianthus annuus L.) has narrow genetic variability, source of genetic resistance to this pathogen is found among wild Helianthus species, and differences among cultivated genotypes tolerance are observed as well. This paper presents only one segment of the work on tolerance by artificial infection under field conditions with aim to investigate level of tolerance of perspective (cms, mf, rf and SC) breeding material to this pathogen. The most tolerant material will be use in creation of new commercial sunflower hybrids.

artificial infection ; Diaporthe/Phomopsis helianthi ; sunflower ; tolerance

nije evidentirano