Selection of parents and segregating populations of carioca common bean resistant to Fusarium wilt

Fusarium wilt (Fusarium oxysporum f. sp. phaseoli) is one of the most common diseases in bean (Phaseolus vulgaris) crop, and viable alternative for its control use resistant cultivars. However, number “carioca” cultivars, important commercial group Brazil, which has a good level resistance to this disease, still low. To obtain populations with higher degree resistance, seven parents different levels produce carioca grains were crossed complete diallel design. The 21 segregating obtained evaluated years/generations 2012/F3, 2013/F4, 2014/F5 experiments Santo Antônio de Goiás, GO, winter crop season (sowing May), together check cultivars BRS Notável (resistant) Cometa (susceptible) an area naturally infested phaseoli, under center pivot irrigation system. Reaction wilt, yield, 100-seed weight evaluated. Additive non-additive effects contributed reaction weight. statistically negative general combining ability ( ) estimates (-0.51), CNFC 15872 (-0.20), IPR Juriti (-0.18), BRSMG Talismã (-0.13) indicate that these are recommended obtaining more wilt. Among them, cultivar also showed positive estimate grain yield (87.90). (0.99) (0.23) those larger-sized beans. Cultivar promising parent participation new crossing blocks, showing non-zero all traits, favoring increase Populations / 15872, Ametista Notável, Talismã, mean values at least These four lines superior performance grains.