Seleção de progênies do cruzamento entre Icatu e Catuaí

Abstract

The coffee tree genetic improvement has brought expressive profit to the activity through the use of cultivars with high productivity and favorable agronomic traits. The main of the improvement programs is to reunite the best characters in a cultivar. So it searched to select the coffee tree progenies for favorable characteristics of productivity, grains size, vegetative force, resistance to rust and cercospora leaf spot. The experiments were implanted in EPAMIG Experimental Farms, in São Sebastião do Paraíso and Três Pontas – Minas Gerais, which were used 33 progenies, derived of mix among cultivars of the group Icatu and Catuaí. The square lattice 6x6 with 3 repetitions was the experimental designs adopted, and the assessments were made during 2 crops (2009/2010 and 2010/2011). The characteris¬tics tested were: productivity (bags. ha-1), perceptual of retained fruits in sieves 17 up, notes: vegetative vigor and reaction to rust and cercospora leaf spot. The progenies showed interaction with two sites evaluated to the characteristics productivity, grains size, notes: vegetative vigor and reaction to cercospora leaf spot. The progenies showed variability to productivity, grains size, vegetative vigor and reaction to cercospora leaf spot. The H 6-47-10 progeny Pit 3 showed superior productivity to the others progenies and cultivars, it showed favorable characteristics of grains size, vegetative vigor, reaction to rust and cercospora leaf spot. The two methodologies of assignment of coffee tree rust analysed showed correlation and data coincidence.