Vol 6 No 1 (2000)
Cikkek

The genetic background of resistance to common bacterial blight in newly identified common bean lines on the basis of inheritance studies

Published February 23, 2000
E. Mergenthaler
Plant Protection Institute, Hungarian Academy of Sciences, 1525 Budapest, P.O. Box 102, Hungary
Bisztray Gy.
Szent István University, Faculty of Horticulture, Dep. of Genetics and Plant Breeding, 1502 Budapest, P.O. Box 53., Hungary
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APA

Mergenthaler, E., & Gy., B. (2000). The genetic background of resistance to common bacterial blight in newly identified common bean lines on the basis of inheritance studies. International Journal of Horticultural Science, 6(1), 77-81. https://doi.org/10.31421/IJHS/6/1/73

Abstract

Common bacterial blight (CBB), caused by Xanthomonas campestris pv. phaseoli (Xcp). is a major disease problem of common bean (Phaseolus vulgaris L.). The inheritance of resistance in Xrl and Xr2 lines to two isolates of Xcp was studied in the F2 and F3 popu­lations from the crosses between these lines and the Masay variety (susceptible to Xcp). Segregation patterns indicated that different single recessive genes presumably in coupling phase linkage determined the resistance to the HUN and EK-1 1 strains of Xcp in both lines. The presence of some minor, modifying genes beside the monogenic genetic background of resistance was also observed. Xrl and Xr2 lines represent valuable new monogenic genetic sources in resistance breeding to CBB.

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