Abstract
Heritabilities (H) of seed transmission and leaf and pod reactions to common bacterial blight (CBB) Xanthomonas campestris pv. phaseoli (Xcp) and to web blight (WB) Thanatephorus cucumeris (Tc) were studied. The reaction to CBB was quantitatively inherited. H values of .36, .46, and .34 for leaf reaction, .14, .12, and .27 for pod reaction, .53, .26, and .36 for seed transmission were estimated based on variation of F6 lines derived from bean crosses 'PC-50' × XAN-159, 'PC-50'× BAC-6, and 'Venezuela 44' × BAC-6 (greenhouse, NE). No significant correlations were detected between leaf and pod reactions or between pod reaction and seed transmission. Quantitative inheritance patterns were observed for leaf reactions to Xcp, Tc, and architecture (AR) in F6lines from the cross BAC-6 × HT 7719 (field, Dominican Republic). H values of .23 (CBB), .14 (WB), and .30 (AR) were obtained. No significant correlations were detected between CBB with WB or AR. A low correlation (+.22) was found between WB and AR.
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