Seleção de progênies F4 obtidas por cruzamentos de 'Icatu' com Catimor, no estado de Minas Gerais

Abstract

The objective of this research was to select productive coffee progenies and resistant to leaf rust (Hemileia vastatrix) Experiments were carried out in four locations in Minas Gerais State Três Pontas Machado Sâo Sebastião do Paraíso and Campos Altos Forty-three progenies developed by Coffee Breeding Program in Minas Gerais coordinated by EPAMIGobtained from Icatu and Catimor crosses were evaluated The experiments were in randomized complete block design with four replications, except that one arranged in Machado that had three replications In Três Pontas were evaluated 24 progenies in addtion to Rubi MG 1192 cultivar used as control, and in other locations there were evaluated 29 progenies besides control There were analysed beans yield in bags.ha-1 of six havests from 2001/2002 to 2006/2007 plant vigour and leaf rust incidence and severity in 2006 The results indicated that the evaluated progenies showed variability mainly for grain yield and rust resistance being confirmed by herdability traits that showed broad range from 31,5% to 68,50% for grain yield and up to 92,8% for rust incidence This condition associated with high beans yield which reached 62,0 bags.ha-1 with low rust incidence and severity and good plant vigour show the possibility of selecting outstanding progenies in the studied population with the potencial for used as productive and commercial cultivars and resistant to leaf rust in the regions of South and Alto Paranaiba of Minas Gerais State.