Genetic inferences in common bean differential cultivars to Colletotrichum lindemuthianum race 69
DOI:
https://doi.org/10.5433/1679-0359.2006v27n3p393Keywords:
Diallel analysis, Genetic control, Differential cultivars, Common bean.Abstract
Anthracnose caused by the Colletotrichum lindemuthianum Sacc. et Magn fungus, is one of the most important diseases and can result in heavy yield losses to the common bean (Phaseolus vulgaris L.). Genetic inferences about resistance of cultivars: Michelite, Michigan Dark Red Kidney, Perry Marrow, Cornell 49-242, PI 207262, AB 136, G 2333 and their 21 diallel hybrids were obtained in relation to the reaction to 69 race by using Hayman's method. The results showed that dominance effects were higher than additive effects to resistance of the related race. The order of parents in relation to dominant genes concentration obtained was: G 2333, AB 136, PI 207262, Cornell 49-242, Michigan Dark Red Kidney, Perry Marrow and Michelite. G 2333, AB 136 and PI 707262 parents are the most indicated for breeding programs to obtain anthracnose resistant cultivars.
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Copyright (c) 2006 Juliana Parisotto Poletine, Maria Celeste Gonçalves-Vidigal, Pedro Soares Vidigal Filho, Adriana Gonela, Adilson R. Schuelter
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