Reaction of bread wheat varieties and lines from ICARDA to Puccinia graminis f.sp. tritici and P. recondita f.sp. tritici
K"rzhin, K.; Gospodinova, E.
Rasteniev'dni Nauki 27(3): 46-51
ISSN/ISBN: 0568-465X Accession: 001926524
At the Institute of Plant Protection, Kostinbrod, under conditions of a severe artificial infectious background, the response was studied of 570 cultivars and lines of soft wheat of ICARDA to brown and stem rust included in the assortment of 1980. Of all specimens 65.3% manifested different degrees of resistance (from 0 up to 80 R, MR) to Puccinia graminis f. sp. tritici: 39.5%-to P. recondita f. sp. tritici, and 31.6% to the two rust causative agents. Twenty one of the specimens were immune or highly resistant to the two diseases, and were interesting as parental forms in wheat immuno breeding. Most valuable of ICARDA numbers were 25, 51, 72, 327, 563, 16, 30, 31, 42, 54, 328. Most of the specimens combine complex resistance to stem- and brown rust with other important economic properties, such as good equalization, winterhardiness, early ripeness, high lodging resistance. The great number of sensitive specimens in this assortment composed of forms of different breeding programs according to their resistance, showed that there were races of P. graminis tritici, and P. recondita tritici in the infectious field of the IPP which were not encountered in many regions in the world.