Genetic determination of characteristics related to semi-mechanized coffee harvests

Abstract

Brazilian coffee cultivation was boosted over the last few decades by the mechanization of various field operations. Considering the influence of genetic factors on coffee harvesting efficiency, we aimed to evaluate the use of mechanized harvesting characteristics as a criterion to select progenies derived from 'Icatu' germplasm, previously evaluated for agronomic characteristics, resistance to rust and cercosporiosis. We also investigated genotypic and phenotypic correlations between semi-mechanized harvesting characteristics. Ten progenies of Coffea arabica L. were analyzed in two experimental farms during two consecutive harvests. Genetic parameters were evaluated to trace selection strategies. Four progenies that were suitable for mechanization were selected, supporting our hypothesis of the use of harvest characteristics as selection criteria.

Abordagens fenotípicas e moleculares aplicadas à seleção de cafeeiros arábica com resistência múltipla a estresses bióticos

“…Por essas razões, as seleções para melhorar diretamente a produção podem ser difíceis e demoradas, especialmente para culturas perenes com um longo período juvenil, como o café (Adepoju et al, 2020). Dessa forma, a identificação e o uso de características positivamente correlacionadas são apropriados.Observou-se correlação negativa de baixa magnitude entre P x VIG (-0,05), normalmente este tipo de correlação é positiva, pois plantas produtivas tendem a ser plantas vigorosas Dias et al (2020). também encontraram correlação genética negativa entre essas duas características.…”