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LINHAGENS DE FEIJÃO DO GRUPO PRETO COM RESISTÊNCIA CONJUNTA À ANTRACNOSE, AO CRESTAMENTO BACTERIANO COMUM E COM

1999; Linguagem: Inglês

Joaquim Geraldo Cáprio da Costa, Carlos Agustín Rava, A. Sartorato, Eiko Mori Andrade,

Plant Pathogens and Fungal Diseases

Bean anthracnose and common bacterial blight caused by Colletotrichum lindemuthianum•andXanthomonas axonopodis pv. phaseoli, respectively, may cause considerable yield reduction of common bean inBrazil. Genetic resistance is onc of the componente of the integrated disease control of common bean. In addition,lodging and pod height are importam characteristics that should be considered during the development of a newcultivar. The objective of this study was to develop common black bean tines resistant to four important C.findem/d//anum pathotypes and to X axonopodis pv. phaseoli with highly desirable agronomic characteristics andhigh yield potential. Crosses were designed to combine such characteristics into a single line. Eight lines wereobtained combining resistance and desirable agronomic characteristics. The line 9310639 showcd a high diseaseresistance to anthracnose and bacterial blight and is a valuabl e source of resistance for common bean improvement.