AGRONOMIC PROPERTIES OF MARTONVASAR WHEAT -VARIETIES BEARING THE1B 1RTRANSLOCATION/

Since the creation of Neuzucht, the first variety bearing a wheat-rye translocation, the Martonvasar 1B/1R translocation wheat varieties are now in the fifth or sixth breeding cycle and due to the differing gen etic backgrounds and the various selection environments they exhibit a wide range of variation for agronomic traits. With the exception of M v 18 and Mv 21, the ten Martonvasar wheat varieties examined, all of w hich contain the 1B/1R translocation, have efficient resistance to ste m rust, thanks to the Sr 31 gene. As Lr 26 and Pm 8 no longer provide effective protection against the prevalent races, greater differences were observed as regards resistance to leaf rust and powdery mildew. A similar conclusion was reached when studying baking quality. In many varieties it proved possible to eliminate the unfavorable effect of th e IR rye segment on loaf volume, farinograph value and farinographic w ater absorption capacity, thus refuting the suggestion that the 1B/1R translocation automatically leads to poor baking quality. At the same time, these varieties have increased productivity and play an importan t role in the production.