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Photoperiod Sometimes Influences Common Bacterial Blight Disease Of Common Beans, Mohamed F. Mohamed, Dermot P. Coyne
Photoperiod Sometimes Influences Common Bacterial Blight Disease Of Common Beans, Mohamed F. Mohamed, Dermot P. Coyne
Department of Agronomy and Horticulture: Faculty Publications
Common bacterial blight, incited by Xanthomonas campestris pv. phaseoli (Smith) Dye (Xcp), is a serious disease of common beans (Phaseolus vulgaris L.). Three experiments were conducted twice in growth chambers at 26 ± 1C under short (10 hours light/14 hours dark) and long (16 hours light/8 hours dark) photoperiods to determine the influence of these photoperiods, flower bud removal, pod development, and pre- and postinoculation photoperiods on the reaction of common beans to Xcp. In one test, ‘PC-50’ (susceptible; S) flowered earlier and was more susceptible to Xcp under the short photoperiod than under the long photoperiod. …
A Radiation-Induced Mutant With Resistance To Common Bacterial Blight Disease In Common Beans, Mohamed F. Mohamed, Dermot P. Coyne, Paul Read
A Radiation-Induced Mutant With Resistance To Common Bacterial Blight Disease In Common Beans, Mohamed F. Mohamed, Dermot P. Coyne, Paul Read
Department of Agronomy and Horticulture: Faculty Publications
The leaf reaction of the Phaseolus vulgaris L. germplasm—UNECA (M6 mutant derived from the cultivar Chimbolito, Costa Rica), ‘Chimbolito’, BAC-6 (Brazil), XAN- 159 (Centro Internacional de Agricultura Tropical, Cali, Colombia), and ‘PC-50’ (Domican Republic)—to Xanthomonas campestris pv. phaseoli strain V4S1 (Dominican Republic) were determined in two replicated trials conducted in a greenhouse in Lincoln, Neb. (Feb.– Mar. and July–Aug. 1993). ‘PC-50’ and ‘Chimbolito’ were susceptible to Xcp strain V4S1 in both tests. UNECA, BAC-6, and XAN-159 had similar levels of resistance to Xcp in the July to August trial. However, in the February to March trial, the …