Avaliação de progênies de café Icatu, em Viçosa, Minas Gerais

Abstract

Em 1984/85 foram estudadas em Viçosa, MG, as seguintes progênies do café Icatu: Icatu 2901; Icatu M-4782-l3-79-9; Icatu H-4782-l3-167-5; Icatu H-4782-7-785-11; Icatu 294; Icatu 2899; Icatu M-4782-10-198; Icatu M-4782-7-585; Icatu. M-4782-10-397-8; e Icatu H-4782-10-299. Como Testemunha foram utilizados os cultivares comerciais Mundo Novo CP 500- 11 e Catuaí CH-2077-2-5-44, escolhidos entre aqueles com melhores níveis de produtividade e competição de cultivares de café. Nos anos agrícolas 1988/89 e 1989/90 as seguintes características foram avaliadas: produção (também avaliada nos anos agrícolas 1986/87 e 1987/88), maturação, percentagem de frutos com lojas vazias (chochos), café beneficiado, tipos de sementes, peneira média, densidade, rendimento, aspecto vegetativo (vigor e altura de plantas) e incidência de ferrugem (Hemileia vastatrix) em condições de campo.

Ten progenies of Icatu coffee, from the Agronomic Institute of Campinas, São Paulo, Brazil, were evaluated in field, at the Federal University of Viçosa, Minas Gerais, Brazil (Plant Science Dept.), with the purpose of studying their behavior in regard to the following characteristics: production of ..“cherry” coffee, fruit maturation, empty-shell fruit occurrence, treated coffee production, kinds, of seeds, average sieve, density, yield, vegetative aspect and coffee rust resistance (Hemileia vastatrix). The progenies of Icatu. coffee showed & vegetativo aspect superior to Mundo Novo CP 500-11 and Catuaí CH 2077-2-5-44 controls, presenting maturation and production similar to theirs; they also presented a low percentage of commercial defects and empty shell occurrence. As to coffee rust. (Hemileia vastatrix), the progenies showed to be resistant to moderately resistant, with the exception of Icatu 2899 and Icatu progenies H-4782-10-3875-8,- whichweresusceptible to the disease. Still some more years of evaluation are suggested, to accomplish safer selection.